Scientific Programme

Scientific Programme

Topics	General Topic Areas for Oral and Poster Presentations are:
	1. Metallacycles
	2. Natural Pigments and Synthetic Dyes
	3. Cycloaddition Reactions
	4. Small Ring Heterocycles
	5. Heterocycles as Enzyme Models and Inhibitors
	6. Heterocyclic Pharmaceuticals and Agrochemicals
	7. Heterocycles in Organic Synthesis
	8. Macroheterocycles
	9. Molecular Modeling in Heterocyclic Drug Design
	10. Naturally Occuring Heterocycles
	11. X-Ray-Structure Analysis of Heterocycles
	12. New Synthetic Methods in Heterocyclic Chemistry

Aim and Scope of the Conference
	The congress is concerned with all aspects of modern heterocyclic chemistry, both academic and industrial. The scientific programme will include plenary lectures, symposia on special topics, short communications and poster sessions.

Monday, August 17

Stadthalle Heidelberg, Neckarstaden 24

9.00 hrs		Opening Session
		Musical introduction by Geschwister-Steinhausen-Quintett, Heidelberg
		Welcome by Prof. R. Neidlein, Heidelberg,
		Chairman of 11th ICHC
		Prof. H.C. van der Plas, Wageningen, NL,
		President of the International Society of Heterocyclic Chemistry
		Prof. J. Thesing, Darmstadt,
		President of the Gesellschaft Deutscher Chemiker

10.00 - 11.00 hrs	PL 1	Metallacycles - Intermediates of Catalytic and Stoechiometric Reactions
		G. Wilke, Mülheim/Ruhr
		Introduction: H. Musso, Karlsruhe

11.00 - 11.30 hrs		Break

11.30 - 12.30 hrs	PL 2	Natural and Unnatural Small Ring Thiaheterocycles - Recent Results
		E. Block, Albany, NY, USA
		Introduction: H. Prinzbach, Freiburg/Br.

SECTION A (Building: 252, Room A)

		1. Metallacycles
		Chairman: W. Siebert, Heidelberg

14.30- 15.00 hrs	ML 1	Four-Membered Metallacycles by the Di-Grignard Route
		F. Bickelhaupt, Amsterdam, NL

15.00- 15.20 hrs	SC 1	1-Methyl-4,5-Cyclopentenoborepin: A Neutral Boron Analogue of Tropylium
		A.J. Ashe III, F.J. Drone, Ann Arbor, MI, USA

15.20 - 16.30 hrs		Poster Session 1 / Coffee Break
		Chairman: Y. Takeuchi, Tokyo, Japan

16.30 - 16.50 hrs	SC 2	Some Metallacycles and their Role in Alkyne Cyclooligomerization and -Cooligomerization
		H. tom Dieck, Chr. Munz, Chr. Müller, R. Diercks, Hamburg

16.50 - 17.10 hrs	SC 3	Nickelacycles - A Novel Route to Methano-Bridged Annulenes
		H. Schwager, Mülheim/Ruhr - Berkeley, CA, USA

17.10 - 17.30 hrs	SC 4	Ruthenacycloalkanes as Reactive Intermediates
		E. Lindner, R.-M. Jansen, Tübingen

SECTION B (Building 306, Room B)

		2. Natural Pigments and Synthetic Dyes
		Chairman: F Seela, Osnabrück

14.30 - 15.00 hrs	ML 2	Fungal Pigmentation of Trees
		W.A. Ayer, Edmonton, Alberta, CDN

15.00 - 15.30 hrs	ML 3	Conformation of the Chromophore in Phycobiliproteins: its Role in Algal Photosynthesis
		A. Gossauer, P. Nesvadba, Fribourg, CH

15.30 - 16.30 hrs		Poster Session 1 / Coffee Break
		Chairman: R. Gleiter, Heidelberg

16.30 - 16.50 hrs	SC 5	A Comparison of the Synthesis and Photogenerating Properties of Symmetrical and Unsymmetrical Squaraine Pigments
		P.M. Kazmaier, R. Burt, G. DiPaola-Baranyi, Ch.-K. Hsiao, Mississauga, Ont., CDN

16.50 - 17.10 hrs	SC 6	Novel Reactions of Tetracyanoethylene with Isoindolines
		O. Döpp, A.A. Hassan, Duisburg, A.M. Nour-el-Din, A.-F. E. Mourad, El Minia, Egypt

17.10 - 17.30 hrs	SC 7	A Novel Heterocyclic System: Synthesis of1H-Pyrazolo [1,5-b]-1,2,4-Triazoles
		T. Kawagishi, T. Sato, N. Furutachi, Kanagawa, J

SECTION C (Building 252, Room C)

		3. Cycloaddition Reactions
		Chairman: L.B. Townsend, Ann-Arbor, MI, USA

14.30 - 15.00 hrs	ML 4	Reductive Photocyclization of Enamides in the Alkaloid Synthesis
		I. Ninomiya, Kobe, J

15.00 - 15.30 hrs	ML 5	Cycloadditions of Nitrile Oxides to Pyridines. A Case of a Two-Step Cycloaddition
		P. Caramella, Ferrara, I

15.30 - 16.30 hrs		Poster Session 1 / Coffee Break
		Chairman: P. Caramella, Ferrara, Italy

16.30 - 16.50 hrs	SC 8	A New 1,3-Dipole, N-Metalated Azomethine Ylides. First Generation and Regio- and Stereoselective Cycloadditions to Olefinic Dipolarophiles
		Sh. Kanemasa, O. Tsuge, Kasuga, J

16.50 -17.10 hrs	SC 9	New Generation of Thioketene S-Methylides and their 1,3-Cycloaddition
		K. Achiwa, Y. Terao, M. Aono, I. Takahashi, Shizuoka, J

17.10-17.30 hrs	SC 10	Intramolecular Cycloadditions with Heteroaromatic Betaines
		K.T. Potts, M.O. Dery, T. Rochanapruk, Troy, NY, USA

SECTION D (Building 252, Room D)

		5. Heterocycles as Enzyme Models and Inhibitors
		Chairman: E. C. Taylor, Princeton, NJ, USA

14.30 - 15.00 hrs	ML 6	Model Studies of the Thymidylate Synthase Reaction
		U.K. Pandit, Amsterdam, NL

15.00 - 15.30 hrs	ML 7	Elucidation of the Chemistry Involved in the Inhibition of Gastric (H⁺ -K⁺)-ATPase by 2-(Pyridylmethylsulfinyl)-benzimidazoles
		J. Senn-Bilfinger, V. Figala, K. Klemm, B. Kohl, U. Krüger, G. Rainer, H. Schaefer, E. Sturm, Konstanz

15.30 - 16.30 hrs		Poster Session 1 / Coffee break
		Chairman: U.K. Pandit, Amsterdam, Netherlands

16.30 - 16.50 hrs	SC 11	Anion Receptor Molecules: A Chiral Binding Subunit Containing a Rigid Guanidine Group for Carboxylate, Phosphate, and Sulfate Recognition
		J. De Mendoza,A. Echavarren, A. Galan, Madrid, E, J.-M. Lehn, Strasbourg, F

16.50 - 17.10 hrs	SC 12	Synthesis of 2-Amino- and 2-Thiothiazole Nucleosides as Analogs of Antiviral Agent 4-Amino-8-(β-D-ribofuranosylamino)pyrimido[5,4-d]pyrimidine
		Y.S. Sanghvi, P.K. Gupta, R.K. Robins, G.R. Revankar, Costa Mesa, CA, USA

17.10 -17.30 hrs	SC 13	Synthesis of 5-Aza-7-Deaza- and 3,7-Dideazapurine 2'-Deoxy-Ribofuranosides by Solid-Liquid Phase-Transfer Glycosylation
		F. Seela, H. Rosemeyer, W. Bourgeois, Osnabrück

SECTION E (Building 306, Room E)

		12. New Synthetic Methods in Heterocyclic Chemistry
		Chairman: F. Sauter, Vienna, Austria

14.30 -15.00 hrs	ML 8	Regioselective Synthesis of Functionalized Pyrans and Benzopyrans and Some of their Conversion
		K. Akiba, Hiroshima-City, J

15.00 - 15.20 hrs	SC 14	The Cross-Coupling Connection to the Aromatic- Directed Metalation Reaction. Iterative Ortho- Metalation Cross-Coupling Tactics for the Construction of Polyheteroaryls
		V. Snieckus, M.J. Sharp, W. Cheng, Waterloo, Ont., CDN

15.20 - 16.30 hrs		Poster Session 1 / Coffee Break
		Chairman: K. Akiba, Hiroshima City, Japan

16.30 - 16.50 hrs	SC 15	Synthesis and Properties of 6-Substituted Pyrido(2,3-d)pyrimidines
		W. Pfleiderer, M. Pfleiderer, Konstanz

16.50-17.10 hrs	SC 16	A Novel Route to Silyl-Substituted Tetrahydrofurans
		E. Schaumann, A. Kirschning, F. Narjes, Hamburg

17.10 -17.20 hrs	SC 17	Cyclic and Acyclic Stereoselection via Vinyl Acetal Rearrangement
		H. Frauenrath, Aachen

20.00 - 21.00 hrs		Evening Lecture (Stadthalle, Neckarstaden 24)
		Chemistry is Fun - Shown by Experiments
		H.W. Roesky. Göttingen
		Introduction: H.C. van der Plas, Wageningen, Netherlands

Poster Session 1 (Building 252, Foyer)

	1. Metallacycles

P 1.1	Synthesis of Phospharhodacycloalkanes by Activation of C-Cl Bonds
	K. Pohmer, E. Lindner, R. Fawzi, Tübingen

P 1.2	Organogermanium Compounds: Synthesis, Structure and Properties of Oxagermatranes and Thiagermatranes with Novel Functional Groups
	M. Akiba, N. Kakimoto, K. Sato, T. Takada, Tokyo, J

P 1.3	¹³C-NMR Spectroscopy in Structural Determination of Cyclization Product of p‑Toluamide O-(2-Acetyl-3-oxobutan)oxime
	E. Kawashima, Ch. Sakuma, Y. Ando, T. Takada, K. Tabei, Tokyo, J

P 1.4	Synthesis of N-Heterocycles via Chalcone Epoxides
	J.O Oluwadiya, R.A. Osisanya, Ile-Ife, Nigeria

P 1.5	The Dilithiated N-Arylheteroaromatics
	R.G. Micetich, T. Oachi, B. Bettadapur, P. Spevak & M. Daneshtalab, Edmonton, Alberta, CDN

P 1.6	Photoelectron Spectra of Selenolo Analogues of Thieno[2,3-c]thiophene and Thieno[3,4-q]thiophene
	M. Eckert-Maksić, Zagreb, YU, R. Gleiter, Heidelberg, A. Konar, Lund, S

P 1.7	Tellurocyclofunctionalizations
	H.M.C. Ferraz, C.A. Brandt, J.V. Comasseto, Sao Paulo, Brasil

P 1.8	NMR Spectra and Molecular Mechanics Calculations of 1-t-Butylgermacyclohexanes
	Y. Takeuchi, K. Tanaka, T. Harazono, Sh. Yoshimura, Sh. Tomoda, Tokyo, J

	2. Natural Pigments and Synthetic Dyes

P 2.1	Heterocyclic Analogues of Benzanthrone from Phenalenone Derivatives.
	M. Kuroki, Saitama, J

P 2.2	*Facile Aerial Oxidation of meso-tetrakis* (3,5-Di-t-butyl-4-hydroxy-phenyl)porphyrin and Some of its Metal Complexes**
	L.R. Milgrom, Kingston Upon Thames, Ch.C. Jones, A. Harriman, London, GB

P 2.3	An Unusual Oxidation Product from the Reaction of 2,3,7,8,12,13,17,18-Octaethylporphyrin with Sodium Chloroaurate (III)
	L.R. Milgrom, Kingston Upon Thames, GB

P 2.4	Synthesis of Some Novel Oxygen Cyanine Dyes
	P. Zhang, Ch.Li, Y. Guo, Sh.-y. Wang, Beijing, PA of China

P 2.5	Cycloaddition Reaction of 6-Cyanobenzo [a]indolizines with Activated Alkynes
	K. Matsumoto, T. Uchida, Kyoto, J

P 2.6	Photoactivable Fluophores (PAFs). Synthesis and Photoactivation of Functionalized Iodoacetamido-Fluoresceins
	G.A. Krafft, W.R. Sutton, Syracuse, NY, USA

P 2.7	Conformation of a Donor-Porphyrin-Acceptor Molecule
	G.M. Sanders, M. van Dijk, U. Hofstra, A. van Veldhuizen, H.c. van der Plas, Wageningen, NL

	3. Cycloadditionreactions

P 3.1	The Structure Influence on the H NMR Chemical Shifts in 1,3-Dipolar Cycloadducts of 1,5- and 1,6-Benzo[h]naphthyridinium N-Phenacylides
	W. Sliwa, B. Bachowska, Czestochowa, A. Postawka, Wroclaw, PL

P 3.2	*Photocycloaddition of 1,1'-bis(Methoxycarbonyl)-divinylamine with Maleimides*
	K. Mitsuhashi, Tokyo, T. Zaima, Yokohama, J

P 3.3	Stereoselectivity in the Cyclisation Reactions of Diene-conjugated 1,3-Dipolar Intermediates
	J.T. Sharp, M. Harding, Edinburgh, GB

P 3.4	Synthesis of Diazapolycyclic Compounds via the Cycloaddition Reaction of Acetylated Isoprenoids with Diazaquinones
	E Gomez Gontreras, A.M. Sanz, Madrid, E

P 3.5	Reactions of Ketenes with Substituted Pyrazoles.
	S. Papadopoulos, J. Stephanidou-Stephanatou, Thessaloniki, GR

P 3.6	¹⁷O-Labeling Studies of Novel Furan-2,3-dione - Rearrangements
	G. Kollenz, H. Sterk, Graz, A

P 3.7	Isobenzofurans: Preparations and Reactions
	B. Rickborn, D. Tobia, S. Mirsadeghi, Santa Barbara, GA, USA

P 3.8	Synthesis and Stereochemical Investigation of Benzothiazepine and Benzodiazepine Derivatives
	G. Toth, A. Szöllosy, Budapest, A. Levai, Debrecen, T. Lorand, Pecs, H

P 3.9	Structure Elucidation of Isomers of Linear and Angular Condensed N-Heterocycles by NMR Spectroscopy
	G. Toth, A. Almasy, I. Bitter, B. Agai, L. Toke, Budapest, H

P 3.10	The Stereochemical Course of the Hydrogenation of 3-Hydroxyisoquinolines
	G. Toth, L. Hazai, G. Deak, Budapest, H. Duddeek, Bochum, M. Hricovini, Bratislava, H

P 3.11	Synthesis and Structure of Aza Derivatives of Benzimidazolo(2,1-f)(1,6)Naphthyridenes
	G. Toth, A. Kovacs, M. Balogh, I.Hermecz, Budapest, H

P 3.12	Reactions of Nitrile Oxides with Benzofuroxans and Furoxano[3,4-b]quinoxalines.
	N.G. Argyropoulos, J.K. Gallos, Thessaloniki, GR

P 3.13	1,3-Addition of Azoles to Nitrile Oxides and Nitrile Imines and Thermolysis of 1- and 2-Hydrazonoyltetrazoles
	J. Plenkiewicz, T. Zdrojewski, Warsawa, PL

P 3.14	Synthesis and Unusual Cycloaddition Reactions of Novel Azomethine Imine Derivatives
	H. Gotthardt, F.-R. Böhm, Wuppertal

P 3.15	Spectral and Chemical Properties of Some Substituted Quinoxaline-N-Oxides
	J. Klicnar, A Lycka, J. Toman, Pardubice, CS

P 3.16	Synthetic Approaches to 3-Arylisothiazoles Using Nitrile Sulphide Chemistry
	R..M. Paton, M.C. McKie, Edinburgh, GB

P 3.17	Reactions of α-Diazoazoles with Triphenylphosphonio-α-Methoxycarbonyl-Alkanides - A Route to 3-Alkyl(aryl)-1H-pyrazolo[5,1-c]-1,2,4-triazoles via their 3-Alkyl(aryl)-3-methoxycarbonyl-3H-Isomers
	K. Gilbert, K. Maurer, G. Ege, Heidelberg

P 3.18	Novel Intramolecular Diels-Alder Reactions of Pyrimidines
	A.E. Frissen, A.T.M. Marcelis, H.C. van der Plas, Wageningen, NL

P 3.19	Reactions of 5-Nitropyrimidine with Amidines
	D.A de Bie, G. Geurtsen, H.C. van der Plas, Wageningen, NL

P 3.20	Stereospecificity in Intramolecular Hetero-Diels-Alder Reactions of Arylidene-1,3-Dicarbonyl Compounds
	L-F. Tietze, M. Bratz, A. Machinek, G. v. Kiedrowski, Göttingen

P 3.21	Synthesis and Reactions of a 2-Sila-imidazolines
	K. Diblitz, M. Zettlitzer, H. tom Dieck, Hamburg

P 3.22	Cycloaddition Reactions of a 4,5-Didehydropyrimidine
	M. Tielemans, A. Promel, V. Areschka, Bruxelles, B

P 3.23	The Photochemistry of Condensed Isoxazolines -Synthetic Route to New Heterocycles
	L. Fisera, L. Stibranyi, Bratislava, CS

P 3.24	Synthesis of Stereoisomeric 2-Aryl-Substituted Perhydro-quinazolin-4-ones
	F. Fülöp, G. Bernath, Szeged, H, K. Pihlaja, J. Mattinen, Turku, SF

P 3.25	Reactions of 3-Diazo-3H-Pyrazoles with Dimethylsulfonio-α-aroyl-methanides to 3‑(Aryl-hydroxy-methylen)-pyrazolo[5,1-c]-1,2,4-triazoles
	G. Ege, J. Fischer, K. Gilbert, K. Maurer, Heidelberg

P 3.26	Dipolarophilic Activity of the Olefinic Bond in N-Vinylamides (Enamides)
	P.K. Kadaba, Lexington, KY, USA

P 3.27	Recent Studies on Pyrrolo[3,2-b]pyrroles
	T. Mukai, Sh. Tanaka, A. Kiyomine, T. Kumagai, Sendai, J

P 3.28	Chloroaldoximes in Heterocyclic Synthesis: A New Route for the Synthesis of 1,2,4‑Oxadiazole and Isoxazole Derivatives
	K.U. Sadek, E.A. Hafez, N.S. Ibrahim, M.H. Elnagdi, Minia and Cairo, Egypt

P 3.29	Novel Cycloadditions of Acetylenic Esters to 1H-and 3H-Indoles
	R.M. Letcher, Hong Kong

P 3.30	Intramolecular Cycloadditions with Isobenzofurans
	W. Friedrichsen, B.-M. König, K. Hildebrandt, Kiel, T. Debaerdemaeker, Ulm

P 3.31	Synthesis and Properties of Ruthenacycloalkanes
	R.-M. Jansen, E. Lindner, Tübingen

P 3.32	Cycloaddition Reactions of Azaphospholes with Dienes and Heterodienes
	K. Karaghiosoff, A. Schmidpeter, C. Cleve, München

P 3.33	[4+2]-Cycloadditions of Vinylindoles as Heterocyclic Donoractivated 1,3-Dienes Leading to Novel Annelated Indoles and Carbazole Alkaloids
	U. Pindur, L. Pfeuffer, Mainz

P 3.34	Apurinic DNA Reactivity: On a new Approach to Functionalize Molecular Probes with Heterocyclic Moieties
	J.-J. Vasseur, B. Rayner, J.L. Imbach, F

P 3.35	Reaction of Dimethyl- and Diethyl Acetylenedicarboxylate with Bis(Azidomethyl) Benzene
	ST. Abu-Orabi, F. Marei, Irbid, Jordan

	4. Small Ring Heterocycles

P 4.1	Synthesis of Two Cyclopropapyridines
	T. Tschamber, R. Bambal, J. Streith, Mulhouse, F, H. Fritz, G. Rihs, Basle, CH

P 4.2	Directed Alkylation by Substituted Azetidinols
	E. Pohiala, M. Peralampi, Tampere, SF, T. Hase, K. Sipilä, Helsinki, SF

P 4.3	Stable Polyfluorinated Triaryloxaziridines - Products of Irradiation of Corresponding Nitrones
	T.N. Gerasimova, N.I. Petrenko, V.V. Shelkovnikov, V.I. Eroshkin, Novosibirsk, SU

P 4.4	Synthesis of 3-Pyridinol Compounds by Singlet Oxygen Reactions of Furfurylamine Derivatives
	M.-J. Shiao, P. Shieh, Taipei, R China

P 4.5	Cycloaddition of Oxazoles and TCNE through CT-Complex
	T. Ibata, Y. Isogami, Osaka, J

	5. Heterocycles as Enzyme Models and Inhibitors

P 5.1	Diaryl-2,3-dihydro-1H-pyrrolizines as Inhibitors of 5-Lipoxygenase
	G. Dannhardt, M. Lehr, Regensburg

P 5.2	The Inhibition of Alkaline Phosphatase by Some Pyrimidines and Purines
	D.T. Hurst, Kingston Upon Thames, GB

P 5.3	Studies of the Substrate Specificity and Inhibition of Adenosine Deaminase Using Some Substituted Adenosines and Some Candidate Antiviral Adenosine Analogues
	D.T. Hurst, A.D. Rodrigues, M.F. Yip, Kingston Upon Thames, GB

P 5.4	An Efficient, Convergent Synthesis of 5,10-Dideaza-5,6,7,8-Tetrahydrofolic Acid (DDATHF)
	E.C. Taylor, G.S.K. Wong, Princeton, NJ, USA

P 5.5	A New Convenient Route to Condensed NADH Models
	G. Dupas, J. Bourguignon, R. Benoit, G. Queguiner, Mont Saint Aignan, F

P 5.6	A Much More Efficient Model of NADH. Reduction of Non-Activated Aromatic Aldehydes
	G. Dupas, J. Bourguignon, J. Cazin, G. Queguiner, Mont Saint Aignan, F

P 5.7	Biomimetic Oxidation with Fused Heteroaromatic o-Quinones
	Y. Ohshiro, Sh. Itoh, Osaka, J

P 5.8	Synthesis and Neurotoxic Activity of Some Hemicholinium Analogues
	I. Butula, B. Zorc, D. Maysinger, Zagreb, YU

	6. Heterocyclic Pharmaceuticals and Agrochemicals

P 6.1	Mesomeric Betaines of Azolium Azolate: Synthesis and Properties
	F. Alcalde, I. Dinares, G. Tello, J. Frigola, Barcelona, J. Elguero, I. Hernandez-Fuentes, C. Salom, Madrid, C. Jaime, Bellaterra, E

P 6.2	Synthesis of Some New Di-(5-hydroxy-4-(1-phenyl-5-aryl-3-pyrazolinyl)-1-phenoxy)methanes and Di-(5-hydroxy-4-(5-aryl-3-isoxazolinyl)-1-phenoxy)methanes as Potential Biocidal Agents
	P.M. Band, V.S. Jamode, Akola, IND

P 6.3	Chemistry and Pharmacology of Perhydro-pyrrolo[2,1-b]thiazolones
	G. Dannhardt, Th. Burgemeister, E. Graf, R. Obergrusberger, Regensburg

P 6.4	Isoxazoles with Cardiovascular Activity
	G. Dannhardt, P. Dominiak, St. Laufer, München

P 6.5	*Synthesis of Novel Heterocyclic Ring Systems via* Photocyclization. 1. Naphthothienonaphthyridines**
	R.N. Castle, S. Pakray, Tampa, FL, USA

P 6.6	A Simple Synthesis of Labelled ¹³C-and ¹⁴C-BM 14.478 and Potential Metabolites
	J.-P. Hölck, P. Neubert, W. von der Saal, Mannheim

P 6.7	Bivalent Pharmacophores Derived from Phenytoin, and Topologically Regulated Recognition at Receptor Level
	J.H. Poupaert, F. Mergen, C. De Cock, J.-L. De Keyser, P. Dumont, Bruxelles, B

P 6.8	The Synthesis of Some Pyrimidinyl- and Thiazolylureas and -Thioureas
	D.T. Hurst, A.D. Stacey, Kingston Upon Thames, M.A. Harnden, Epsom, GB

P 6.9	Synthesis of 2,2-Dimethyl-2H-benzothiopyran-1-oxide and 2,2-Dimethyl-2H-benzothiopyran-1,1-dioxide
	J.T.B. Ferreira, V. Catani, Sao Carlos, Brasil

P 6.10	New Synthetic Routes to Cephalotaxus Alkaloids
	M.A. Bryce, J.M. Gardiner, Durham, GB

P 6.11	Reactions of 2-Substituted Pyrimidines
	Chr. E.L. Jones, S.G. Murray, Swindon, GB

P 6.12	Synthesis and Antipsychotic Activity of Substituted β-Carbolines
	M. Abou-Gharbia, U.R. Patel, J.H. Moyer, E.A. Muth, Philadelphia, PA, USA

P 6.13	Synthesis of Some New Indazoles and Benzisoxazoles of Expected Pharmacological Interest
	M.S. Abd El-Halim, M.A. Sayed, A.M. Hataba, A.A. EI-Khawas, Cairo, Egypt

P 6.14	Synthesis and Biological Activities of Several 5- Deaza-7-Mono- and 5,7-Di-Substituted-Aminopterins
	T-L. Su, J.-T. Huang, K.A. Watanabe, Rye, NY, USA

P 6.15	A New Route to 2H-(1,2,4)Triazino[3,4b]benzothiazol-3(4H)-one
	J.J. D'Amico, F.G. Bollinger, Wm.E. Dahl, St. Louis, MO, USA

P 6.16	A One-Step Synthesis of Oxiracetam
	Sh. Iriuchijima, H. Kobayashi, T. Shimizui, K. Aoki, H. Hirano, Tokyo, J

P 6.17	Design and Synthesis of Antileprotic Compounds
	S.P. Hiremath, K. Rajsekhar, U. Ashok, M.G. Purohit, Karnataka, IND

P 6.18	Synthesis and Pharmacological Activity of 1,2-Diazepino[4,5,6-cd]indol-3-ones
	M.G. Purohit, S.P. Hiremath, N.J. Kalaskar, Gulbarga, IND

P 6.19	A Single Step Synthesis of Bioactive Heterocycles Containig 1,4-Thiazine Nucleus
	R.R. Gupta, R.K. Gautam, R. Kumar, Jaipur, IND

P 6.20	Potential Azasteroidal Neuromuscular Blockers
	T.R. Bhardwaj, S. Kapoor, C. Ch. Shekhar, Dh.P. Jindal ,H. Singh, Chandigarh, IND

P 6.21	Potential Antimicrobial Agents: Synthesis of Substituted Benzopyrans and Benzodipyrans
	N.K. Sangwan, B.S. Verma, K.S. Dhindsa, Hisar, IND

P 6.22	Synthesis, Stereochemistry and Reactions of Substituted 1,4-Dihydro- and 1,4,5,6-Tetrahydropyrimidines
	W. Wendelin, H. Hornich, J. Kerbl, K. Schermanz, Graz, A

P 6.23	Synthesis and Antiarrhythmic Properties of the Major Metabolites of Flecainide Acetate
	E.H. Banitt, W.R. Bronn, J.R. Schmid, St. Paul, MN, USA

P 6.24	Synthesis of N(3)-Amino and N(3)-Ethylenamino-5H-pyrimido[5,4-b]indole-4-one Derivatives
	A. Monge, J.A. Palop, T. Goni, F. Martinez-Crepo, P. Parrado, C. Perez-Ilzarbe, Pamplona, E Fernandez-Alvarez, Madrid, E

P 6.25	Stereoconservative and Efficient Syntheses of 1-Substituted (S)-and (R)-2-Aminomethylpyrrolidines
	T. Högberg, S. Rämsby, P. Ström, Södertälje, S

P 6.26	A New Synthesis of 3-Unsubstituted Cephalosporins from Penicillin V
	M. Davis, W.-Y. Wu, Bundoora, AUS

P 6.27	Triaminopyridines with an Antiepileptic Activity
	J. Engel, W.-Y. Bebenburg, P. Emig, J. Heese, K. Thiele, Frankfurt

P 6.28	Pyridopyridines (Naphthyridines) and Thienopyridines as 5-HT₂ Antagonists
	D.J. Le Count, G.L.S. Duncan, A.P. Marson, Macelesfield, GB

P 6.29	Synthesis of a New Biologically Active Indole Glycoside
	Sh. Tanaka, K. Hamada, G. Suzukamo, Osaka, J

P 6.30	Synthesis and Pharmacological Activity of Some Heterocyclic Compounds Prepared Starting from Cyanomethyl Derivatives.
	C. Passarotti,A. Fossati, G. Bandi, Origgio, I

P 6.31	N-(1-Adamantylamino )azoles and Benzazoles
	R.M. Claramunt, D. Sanz, J. Elguero. Madrid, E

P 6.32	Total Synthesis of Heteroaromatic Analogues of Anthracyclines
	Y. Kita, Y. Tamura, M. Kirihara, J. Sekihachi, M. Sasho, Sh. Akai, Osaka, J

P 6.33	Synthetic Studies on Substituted 2,3-Dihydrobenzofuran-2-carboxylic Acids
	H. Harada, V. Matsushita, M. Vado, M. Nakamura, Y. Yonetani, Osaka, J

P 6.34	Synthesis and Structure-Activity Relationships of Novel, Positive Inotropic Derivatives of Pyrrolo[2,3-f]benzimidazoles.
	W. von der Saal, A. Mertens, J.-P. Hölck, W. Kampe, B. Müller- Beckmann, Mannheim

P 6.35	5- or 7-(N-Substituted)aminotriazolo[1,5-c]pyrimidines: Some Synthetic Aspects
	J.J. Wade, O.B. Olson, Saint Paul, MN, USA

P 6.36	Synthesis of Some Heterocycles of Pharmaceutical Interest
	M.A. Metwally, M.S. El-Hussiny, F.Z. El-Ablak, A.M. Khalil, Mansoura, Egypt

P 6.37	New 4-Benzyl Piperazine Derivatives with Neuroleptic Activity
	M.-T. Comte, J. Mason, M. Barreau, G. Ponsinet, Vitry-sur-Seine, F

P 6.38	Synthesis and Properties of Some N-Substituted 2-Iminopyrrolidi n-5-ones
	J. Lange, M. Kajurek, Warsawa, PL

P 6.39	Synthesis of Some New 4-Arylhydrazono-Pyrazolones and Pyrazoles of Pharmaceutical Interest
	M.A. Metwally, A.M. Ismaiel, M.Y. Yousief, Mansoura, Egypt

P 6.40	Copper Nitrate Based Synthesis in Coumarones: Their Applications as Antifungal and Antibacterial Agents
	V.J. Naphade & B.J. Ghiya, Nagpur, India

P 6.41	Physical and Chemical Properties of Novel Antifolate Drugs
	M.F.G. Stevens, R.J. Griffin, C.H. Schwalbe, Birmingham, GB

P 6.42	Herbicidal Quinoxaline-Phenylethers
	M.M. Fawzi, L.G. Carter, D.J. Fitzgerald, W.R. Moberg, T.P. Selby, Wilmington, DE, USA

P 6.43	A Novel Indole System : 1,3-Diazepino [4,5-b]indole
	R. Jain, K. C. Joshi, S. Arora, Jaipur, IND

P 6.44	Molecular Structures and Conformations of C.N.S. Active Heterocyclic Compounds: "Nootropic" Drugs
	G.C. Pappalardo, G. Bandoli, A. Grassi, M. Nicolini, I

P 6.45	Novel Derivatives of 5-Aminoimidazole-4-carboxamide [AIC] with a Potential Tumor Inhibitory Activity: Design and Synthesis
	A. Hribar-Kikelj, K. Ch. Grancharov, G.F. Kolar, Heidelberg

P 6.46	Lin-Benzo-Quinolones
	U. Jordis, F. Sauter, C. Ortega, Vienna, A

P 6.47	Stereoselective Total Synthesis of Macrolide and Polyether Antibiotics
	O. Yonemitsu, Sapporo, J

P 6.48	Syntheses of 2,3-Unsubstituted Natural Indoles by 3.3- Rearrangement of N-Phenyl-O-Vinylhydroxylamines.
	P. Martin, Basle, CH

P 6.49	Synthesis of Indolyl-Dihydropyridazinones and Related Compounds
	A. Mertens, W.-G. Friebe, W. Kampe, B. Müller-Beckmann, W. von der Saal, Mannheim

	Last Minute Posters

LMP 1	7-Hydroxy-8-propionylcoumarine in Organic Syntheses
	A. Cascaval, Jassy, Romania

LMP 2	"Iasinones" - New Mesoionic Heterocyclic Compounds
	A. Cascaval, Jassy, Romania

LMP 3	Oxidation of Ethyl 3-methylthio-5-hydroxy-1,2,4-triazine-6-carboxylate and its Dimer and the Substitution Reactions of their Oxidized Products
	M.-S. Cai, T.-M. Cheng, Q. Jia, Beijing, R China

LMP 4	Synthesis of a Novel Thiadiazacyclazine and related Compounds
	Th. P. Selby, Wilmington, DE, USA

LMP 5	Di-amino Linked Biacridines
	M. Moisan, J.P. Galy, E.J. Vincent, J. Barbe, Marseille, F

LMP 6	Synthesis and Reactions of 2,6-Diaryltetrahydro-4H-thiopyran-4-ones
	I.E. El-Kholy, M.M. Mishrikey, M.G. Marei, A.A. El-Ghanam, Alexandria, Egypt

LMP 7	Reaction of o-Thiophenedicarboxaldehyde with o-Aminoacetophenone
	M.El Borai, S.S. Gerges, Tanta, Egypt

LMP 8	*Synthesis of New 2,5-Diphenyl-3,4-dihydro-1,6,6a- trithia(6a-S^IV)-cyclopental[cd]pentalene and 2,6-diphenyl- 4,5-dihydro-3H-[1,2]dithiolo[4,5,1-hi][1,2]-benzodihiole-8-S^IV Derivatives*
	A. Arcoleo, G. Abbate, M. Gottuso, G. Giammona, G. Fontana, Palermo, I

LMP 9	Dyeing Mechanism of Acrylic Fibres with Methylene Blue
	S. Fisichella, G. Alberghina, M.E. Amato, Catania, I

LMP 10	Thiomethylation of Indole Derivatives
	E. Akgun, M. Tunali, Kocaeli, TR

LMP 11	Synthesis and CNS Activity of New 2-Substituded 3-(p-halophenyl)-quinazolin-4(3H)-ones
	M.A. Khan, R.K. Saksena, Kanpur, IND

LMP 12	Synthesis and Reactions of Pyrylium Hemispherands
	P.J. Dijkstra, D.N. Reinhoudt, Enschede, NL

LMP 13	The Synthesis of Coumarino Thiazepines and Diazocines
	M. Trkovnik, R. Djudjic, M. Kules, D. Kitan, Banja Luka, YU

LMP 14	3-Alkylated Isochromans from Benzylated Sugars
	O.R. Martin, P.S. Rao, H.A. El-Shenawy, Binghamton, NY, USA

LMP 15	Synthesis of the Novel Triazolopyrimidopyrimidines
	A. Dlugoszl, Wroclaw, PL

LMP 16	A New Facile Method for the Synthesis of 9H-Pyrido-[2,3-b]indoles
	R.K. Bansal, D. Sharma, I.K. Jain, Jaipur, IND

LMP 17	Synthesis of Glutarimide C-Nucleosides
	G.J. Koomen, M.J. Wanner, Amsterdam, NL

Tuesday, August 18

(Building 252, Room A)

8.30 - 9.30 hrs	PL 3	Heterocycles in Industrial Dyes and Pigments
		E. Hahn, Ludwigshafen
		Introduction: S. Hünig, Würzburg

9.30- 10.30 hrs	PL 4	Computer Graphics Molecular Modeling in Drug Design
		W.C. Ripka, W.J. Sipio, J.M. Blaney, Wilmington, DE, USA
		Introduction: H. König, Ludwigshafen/Rh.

10.30 - 11.00 hrs		Coffee Break

SECTION A (Building 252, Room A)

		7. Heterocycles in Organic Synthesis
		Chairman: G. Helmchen, Heidelberg

11.00 - 11.20 hrs	SC 18	New Reactions of 3,6-Alkanooxepins
		W. Tochtermann, Kiel

11.20 - 11.40 hrs	SC 19	Stereocontrol by Cyclocarbamation: Synthetic Study of Fortimicin A
		S. Kobayashi, K. Kamiyama, M. Ohno, Tokyo, J

11.40- 12.00 hrs	SC 20	Synthesis of New Benzopyranobenzoxazine Ring Systems
		S.L. Kelkar, B.D. Mulay, G.M. Nazeruddin, M.S. Wadia, Pune, IND

12.00 - 12.20 hrs	SC 21	Peculiar Reactivity of a 3-Trichloromethyl Substituent in Pyridines
		H. Suschitzky, A.S. Dainter, B. Wakefield, Salford, N. Hughes, A. J. Nelson, Manchester, GB

12.20- 12.40hrs	SC 22	Benzocoumarins as Versatile Intermediates in the Synthesis of Axially Chiral Natural Products
		G. Bringmann, J.A. Jansen, H. Reuscher, Münster

12.40 - 14.30 hrs		Lunch Break

		Chairman: Y. Ban, Sapporo, Japan
14.30 - 15.00 hrs	ML 9	Borderlines of Pyrylium-Chemistry
		W. Schroth, R. Spitzner, Halle, DDA

15.00 - 15.30 hrs	ML 10	Cyclic Thioimides in the Photochemical Synthesis of Nitrogen-Heterocycles
		Y. Kanaoka, Sapporo, J

15.30 - 16.30 hrs		Poster Session 2 / Coffee Break
		Chairman: W. Schroth, Halle, GDR

16.30 - 16.50 hrs	SC 23	3-Methylthio-1,5-Pentenedione Enolates as Synthons in Heterocyclic Chemistry
		J. Becher, C.E. Stidsen, P. Hansen, Odense, DK

16.50 - 17.10 hrs	SC 24	Potential Use of Tetrahydrofurans in the Synthesis of Natural Products
		Y. Guindon, M. Thérien, Y. Girard, M. Labelle, D. Delorme, H.E. Morton, Pointe Claire-Dorval, Quebec, CDN

17.10 - 17.30 hrs	SC 25	The Interactive Chemistry of Substituted Pyridines with Reactive Carbonyl Moieties; The Steric and Electronic Effects Associated with the Formation of Pyridinium Salts
		J.A. King Jr, Schenectady, NY,USA

SECTION B (Building 306, Room B)

		6. Heterocyclic Pharmaceuticals and Agrochemicals
		Chairman: B. Stanovnik, Ljubljana, Jugoslavia

11.00 - 11.20 hrs	SC 26	Aminobenzimidazole N-Oxides: Structural Analogues of the Natural Purines
		D.M. Smith, I.W. Harvey, M.D. McFarlane, D.J. Moody, St. Andrews, GB

11.20 - 11.40 hrs	SC 27	Synthesis and Some Biological Properties of 2-Desamino-10-propargyl-5,8-dideazafolic Acid and Related N¹⁰Analogues
		T.R. Jones, A.L. Jackman, T.J. Thornton, A. Flinn, B. O'Connor, Sutton, Surrey, GB

11.40 - 12.00 hrs	SC 28	Some Useful Reactions for the Synthesis of Biologically Active Heterocycles
		Y. Ban, Chiba Prefecture, K. Yoshida, Sh. Nakajima, Sapporo, T. Ohnuma, Tokyo, J

12.00 - 12.20 hrs	SC 29	A New Type of Fungicidal Azole Derivatives, its Synthesis and Activity
		J. Curtze, R. Mengel, Ingelheim

12.20 - 12.40 hrs	SC 30	Synthesis of 4-Azahomoadamatano(4,5-b)-1',2',3',4'-tetrahydroisoquinolin-1'-ones and Some Related Derivatives by Photocyclization of 5-Methylene-4-aroyl- and -acryloyl-4-azahomoadamantanes
		S. Eguchi, K. Asai, H. Takeuchi, T. Sasaki, Y.Terada, Nagoya, J

12.40 - 14.30 hrs		Lunch Break

		Chairman: G. Bringmann, Münster/Westfalen
14.30 - 15.00 hrs	ML 11	On the Various Roles of Heterocyclic Structures in Modern Agrochemicals
		J. Stetter, Wuppertal

15.00 - 15.30 hrs	ML 12	Synthetic Studies in the Alkaloid Field
		C. Szantay, Budapest, H

15.30 - 16.30 hrs		Poster Session 2 / Coffee Break

		Chairman: Y. Kanaoka, Sapporo, Japan
16.30 - 16.50 hrs	SC 31	Chloro-1 ,3,5-triazine Derivatives as Anthelmintic Agents
		A. Kreutzberger, I. Schläfer, R. Kochanowski, Mainz

16.50 - 17.10 hrs	SC32	Metabolic Generation, Synthesis and Reactivity of Imidazolyl and Arylhydroxymethyltriazenes: Differentiation between the Mechanisms of the Tumor Inhibititory and Carcinogenic Activity
		G.F. Kolar, Heidelberg

17.10 - 17.30 hrs	SC 33	Reaction of Anthranilamide with Isothiocyanates and Isocyanates
		Ch.-H. Chan, J.-W. Chern, F.-Ch. Hsieh, K.-Ch. Liu. Taipei, R China

SECTION C (Building 252, Room C)

		3. Cycloaddition Reactions
		Chairman: S. Gronowitz, Lund, Sweden

11.00 - 11.20 hrs	SC 34	The Generation and Intramolecular [3+2] Cycloaddition of 2-Azaallyl Anions
		W.H. Pearson, W.G. Harter, D.P. Szura, Ann Arbor, MI, USA

11.20 - 11.40 hrs	SC 35	Intramolecular Cycloaddition Routes to the Highly Oxygenated Sesquiterpenes
		P.A. Jacobi, H.G. Selnick, Middletown, CT, USA

11.40 - 12.00 hrs	SC 36	The Selenium-Carbon Double Bond. Preparation and Cycloaddition Reactivity
		G.A. Krafft, P.T. Meinke, Syracuse, NY, USA

12.00 - 12.20 hrs	SC 37	Synthesis of tetra-tert-Butyl-thiophene and -pyrazole
		A. Krebs, E. Franken, M. Müller, Hamburg

12.20 - 12.40 hrs	SC 38	Stereoselectivity in Intramolecular Dipolar Cycloadditions
		A. Hassner, K. Murthy, Ramat-Gan, IL

12.40 - 14.30 hrs		Lunch Break

		3. Cycloaddition Reactions
		9. Molecular Modeling in Heterocyclic Drug Design
		Chairman: G. Bernáth, Budapest, Hungary

14.30 - 15.00 hrs	ML 13	Designing Benzimidazole Inhibitors of Gastric K⁺/H⁺ -ATPase
		W. Schubert, Frankfurt/M

15.00 - 15.30 hrs	ML 14	Structure Activity Relationships of Calcium Antagonists
		H. Kubinyi, G. Klebe, Ludwigshafen

15.30 - 16.30 hrs		Poster Session 2 / Coffee Break

		Chairman: G. Ege, Heidelberg
16.30 - 16.50 hrs	SC 39	Intramolecular Diels-Alder Reactions of 1,2,4-Triazines: New Routes to Fused Pyridine and Pyrimidine Heterocycles
		E.C. Taylor, J.C. Warner, J.L. Pont, D.-wei Yu, Princeton, NJ, USA

16.50 - 17.10 hrs	SC 40	Dithiaspiro-Heterocycles from 1,3-Thiazole-5(4H)-thiones
		H. Heimgartner, Ch. Jenny, P. Tromm, P. Wipf, Zürich, CH

17.10 - 17.30 hrs	SC 41	1,3-Dipolar Cycloadditions of Diazoalkanes to Heteroaromatic Systems. The Isolation of Dihydro Intermediates and their Transformations in Novel Heterocyclic Systems
		B. Stanovnik, B. Jelen, G. Habjan, A. Mozer, A. Stimac, M. Zlicar, M. Tisler, Ljubljana, YU

SECTION D (Building 252, Room D)

		5. Heterocycles as Enzyme Models and Inhibitors
		10. Naturally Occuring Heterocycles
		Chairman: E.B. Pedersen, Odense, Denmark

11.00 - 11.20 hrs	SC 42	Pyridine Derivatives as Selective not Denaturing Inhibitors of Copper Containing Amine Oxidases
		V. Bertini, A. De Munno, F. Lucchesini, N. Picci, M. Pocci, Pisa, I

11.20 - 11.40 hrs	SC 43	Synthesis of Potential Purine Nucleoside Phosphorylase Inhibitors: 5'-Deoxy-5'-aryl(alkyl)thio-8-aminoguanosine and -formycin B
		J.-W. Chern, H.-Y. Lee, L.B. Townsend, Taipei, R China and Ann Arbor, MI, USA

11.40 - 12.00 hrs	SC 44	Isoalloxazine as a Model for the Cofactor of Diamine Oxidase
		M. Al-Arab, Irbid, Jordan

12.00 - 12.20 hrs	SC 45	Synthesis of RS 60661 and Related Compounds. Inhibition of an Enzyme Containing a Cysteine Active Site Residue Using a Latent Reactive Heterocycle
		A.L. Castelhano, R. Billedeau, D.H. Pliura, B. Bonaventura, A. Krantz, Mississauga, Ont., CDN

12.20 - 12.40 hrs	SC 46	Synthetic Approaches to Eudistomins
		M. Nakagawa, J.-J. Liu, A. Hasegawa, T. Hino, Chiba-shi, J

12.40 - 14.30 hrs		Lunch Break

		10. Naturally Occuring Heterocycles
		11. X-Ray-Structure Analysis of Heterocycles
		Chairman: A. Hassner, Ramat-Gan, Israel

14.30 - 15.00 hrs	ML 15	Natural Product Syntheses Utilizing Oxazoles as β-Aminoalcohol Synthons
		T. Shiori, A. Kawai, Y. Kohno, Y. Hamada, Nagoya, J

15.00 - 15.30 hrs	ML 16	Phase Effects in Tautomerism: The Paradigmatic Case of Azoles
		J. Elguero, Madrid, E

15.30 - 16.30 hrs		Poster Session 2 / Coffee Break

		Chairman: W. Tochtermann, Kiel
16.30 - 16.50 hrs	SC 47	Easy Synthesis of Protected 3-Amino-2,3-dideoxycarbohydrates
		E B. Pedersen, M.S. Motawia, G.A.M. Nawwar, ES. Andreassen, Odense, DK

16.50 - 17.10 hrs	SC 48	Alkaloids from Schultesia guianensis Malme
		A.A. Craveiro, E.M. Nobrega, Fortaleza, Brasil and Albany, NY, USA

17.10 - 17.30 hrs	SC 49	Synthesis of Optically Active Chrysogine, a Naturally Occurring Quinazolinone
		A. Brynolf, J. Bergman, Stockholm, S

SECTION E (Building 306, Room E)

		12. New Synthetic Methods in Heterocyclic Chemistry
		Chairman: Th. Kappe, Graz, Austria

11.00 - 11.20 hrs	SC 50	Thermal Rearrangement of 5-Spirocyclopropaneisoxazolidines. Synthesis of Key Intermediates for Natural Alkaloids
		A. Brandi, F. De Sarto, S. Garro, C. Querci, A. Guarna, A. Goti, Florence, I

11.20 - 11.40 hrs	SC 51	A New Synthetic Approach to Indoles, Benzimidazoles and Benzoxazoles. Electrocyclic Ring Closure of Divinylpyrroles, Divinylimidazoles and Divinyloxazoles
		A.M. van Leusen, J. Moskal, R. van Stralen, D. Postma, F. Leusink, K. Bultje, Groningen, NL

11.40 - 12.00 hrs	SC 52	New Syntheses of Heterocycles tram Allenic and Acetylenic Nitriles
		S. Landor, P.D. Landor, Z.T. Fomum, A. Johnson, R. Roberts, J. Silike-Muruumu, Exeter, GB and Kingston, Jamaica

12.00 - 12.20 hrs	SC 53	New Entry to γ-Butyrolactams by Free Radical Cyclization of N‑Allyl-α-chloro-α-(methylthio)-acetamides: New Synthesis of Pyrrolizidine Alkaloids
		M. Ikeda, H. Ishibashi, T. Sato, S. Harada, Kyoto, J

12.20 - 12.40 hrs	SC 54	The Nucleophilic Reactions of Heterocyclic Ketene Aminals
		Z.-t. Huang, Z.-r. Liu, X.-j. Wang, Beijing, PR China

12.40 - 14.30 hrs		Lunch Break

		12. New Synthetic Methods in Heterocyclic Chemistry
		8. Macroheterocycles
		Chairman: A. Gossauer, Fribourg, Switzerland

14.30 - 15.00 hrs	ML 17	Synthesis and Diels-Alder Reactions of the Iso Condensed Heteroaromatic Pyrroles
		C.-K. Sha, Ch.-v. Tsai, Ch.-P. Tsou, Ch.-L. Pern, J.-M. Liu, Hsinchu, Taiwan

15.00 - 15.30 hrs	ML 18	Synthesis of Large Ring Heterocycles via Polylithiated O-Alkyloximes
		Sh. Shatzmiller, N. Menashe, Tel-Aviv, IL

15.30 - 16.30 hrs		Poster Session 2 / Coffee Break

		Chairman: N. De Kimpe, Gent, Belgium
16.30 - 16.50 hrs	SC 55	Synthesis and Use of Readily Available Pyrono-pyridones
		T. Kappe, Graz, A

16.50 - 17.10 hrs	SC 56	Preparation and Reactions of exo-Alkylidene Dihydrofuranes
		E. Vilsmaier, J. Maischein, S. Weber, Kaiserslautern

17.10 - 17.30 hrs	SC 57	Synthesis of Thienothiophenes
		Brian Iddon, P.J. Rosyk, Salford, GB

Poster Session 2 (Building 252, Foyer)

	7. Heterocycles in Organic Synthesis

P 7.1	Spin-Labeled Fluorescent Amines Containing Nitroxyl Moieties
	I. Dragutan, Bucharest, Romania, R.J. Mehlhorn, Berkeley, CA, USA

P 7.2	Solvent-Directed and Regiospecific Cycloaddition Reactions of DMAD with Substituted 2-Amino- Pyrroles
	K. Eger, G. Folkers, G. Koop-Kirfel, Tübingen

P 7.3	2-Formyl-imidazol Formation and Rearrangement
	B. Geyer, H .tom Dieck, M. Zettlitzer, Hamburg

P 7.4	New Homogeneous Dehydration Method by Nitrogen Heterocyclic Bipolar Compounds
	Yu.V. Kurbatov, A.S. Kurbatova, S.V. Zalyalieva, A.S. Sadykov, Samarkand, SU

P 7.5	Synthesis and Circular Dichroism of Cholesteno -as - Triazines
	Gy. Hajos, Budapest, G. Snatzke, Bochum

P 7.6	Synthesis of New Pyridinium Radical-Cations
	I. Dragutan, Bucharest, Romania, R.J. Mehlhorn, Berkeley, CA, USA

P 7.7	Study of the Prototropic Tautomerism of 8-Azatheophylline by ¹³C and ¹⁵N NMR Spectroscopy
	S. Toppet, G. L'abbé, M.A. Persoons, Leuven, NL

P 7.8	Reactions of 1,3-Dimethyl-5,5-dichlorobarbituric Acid with Pyridines
	G. Szilagyi, P. Sohar, Budapest, H. Wamhoff, Bonn

P 7.9	Basic Catalyzed Condensation of the 2,4-Thiazolidinedione with some Aldehydes
	K. Popov-Pergal, M. Pergal, Novi Sad, Z. Cekovic, Beograd, YU

P 7.10	The Influence of Substituents on the Electron Dislocation at the Sulfur Atom in 2,4‑Thiazolidinedione
	M. Pergal, K. Popov-Pergal, Novi Sad, Z. Cekovic, Beograd, YU

P 7.11	The Reaction of 4-Chloropyridine-1-oxide with Activated Acetylenes
	A. Deeb, R.A. Abramovitch, Zagazig, Egypt

P 7.12	2-Alkoxyoxazolinones from Hindered N-Alkoxycarbonylaminoacids
	A.M. Freitas, P. Arriscado, M.V. Gregorio, H.L.S. Maia, Braga, Portugal

P 7.13	Electrophilic Substitution on Pyrazole[1,5-a]pyridines
	Sh. Takemura, Y. Miki, H. Hachiken, S. Yagi, Higashi-Osaka, Japan

P 7.14	N-(Arylsulphony) piperidinium Salts: Intermediates for Multiring Heterocycles
	B. Alo, O. Familoni, Lagos, Nigeria

P 7.15	Synthesis of 1-Azabicyclo[3.3.1]nonanes and their Conformational Analysis
	K. Sumoto, M. Irie, N. Mibu, S. Miyano, Fukuoka, J

P 7.16	Facile and Stereoselective Syntheses of Conjugated Dienes Using 3-Sulfolenes, and their Application to the Syntheses of Natural Products
	H. Takayama, S. Yamada, T. Suzuki, T. Nomoto. H. Suzuki, K. Fukushima A. Ishiwata, Kanagawa, J

P 7.17	Synthesis of Different Substituted Thiophenes Via Manganese Containing Heterocycles
	V. Käss, E. Lindner, Tübingen

P 7.18	Facile Claisen/Cope Rearrangements of 7-Hexenyloxy-5-Methyl-s-Triazolo[1,5-a]pyrimidines
	D. Fabricius, Brevard, North Carolina, USA

P 7.19	New Synthesis of Substituted Pyrido[2.3-d]pyrimidines
	P.Victory, A. Crespo, M. Garriga, R Nomen, Barcelona, E

P 7.20	Alternative Route to the Previous Synthesis of Pyrido[2,3-d]pyrimidines
	P. Victory, A. Crespo, Barcelona, E

P 7.21	Synthesis of Benzo-, Pyrrolo- and Pyrazolo-phenothiazone as well as Phenoxazone Derivatives
	S. Nan’ya, K. Katsuraya, W. Kang, Y. Ueno, Nagoya, E. Maekawa, Tokyo, J

P 7.22	A Model Reaction for the Repair of Oxidized Nucleic Acids
	T. Harayama, R. Yanada, M. Tanaka, F.Yoneda, Kyoto, J

P 7.23	Stereoselective Total Synthesis of (±)-Gephyrotoxin 223AB and (±)-Monomorine I Via Intramolecular Hetero Diels-Alder Reaction
	Ch. Kibayashi, H. Iida, Y. Watanabe, Tokyo, J

P 7.24	Synthesis of Chiral 5-Deazaflavin Derivatives and their Use in Asymmetric Reduction
	K. Tanaka, T. Kimura, X. Chen, F. Yoneda, Kyoto, J

P 7.25	Investigation of o-Hydroxyphenylazines by ¹⁵N, ¹⁷O, and ¹H- NMR: Structure, Tautomerism and Sterodynamics
	V.V. Lapachev, V.P. Krivopalov, S.A. Stechova, Novosibirsk, SU, N. Müller, Linz, A

P 7.26	Synthesis of 3-(β-D-Ribofuranosyl)-6H-1,2-oxazin-6-one
	I. Maeba, M. Suzuki, O. Hara, T. Takeuchi, Nagoya, J

P 7.27	Azido-Tetrazole Tautomerism of Diazidopyrimidines
	V.P. Mamaev(†).P. Krivopalov, A.Yu. Denisov, Yu. V. Gatilov, V.I. Mamatyuk, Novosibirsk, SU

P 7.28	Use of Furan in Alkaloid Synthesis Total of Geissoschizine and Hirsuteine
	O. Miyata, T. Naito, I. Ninomiya, Kobe, J

P 7.29	Configuration of the Ketoximes of Some 2-Aryl-4-methyl- 5-acetyl-thiazoles
	I. Simiti, A Muresan, H. Demian, Cluj-Napoca, Romania

P 7.30	*Ring-Chain Tautomerism of ortho-Amino-substituted Aromatic Carboxylic Acid Hydrazones II. Reduction of ortho-Amino-aroyl-N-methylhydrazones of β‑Dicarbonyl Compounds*
	M. Gal, P. Dvortsak, Budapest, H

P 7.31	Synthesis of Monoaminoxanthones and Novel 1,8- Diaminoxanthone by Amination of Xanthone with Hydroxylamine
	I. Okabayashi, H. Fujiwara, Niigata, J

P 7.32	Synthesis and Transformations of Some N-Heteroaryl-carbonyl Amino Acid Derivatives
	M. Kocevar, S. Polanc, B. Vercek, M. Tisler, Ljubljana, YU

P 7.33	Synthesis and Transformations of Some Oxazolone Derivatives
	B. Vercek, J. Istenic, M. Kocevar, A. Petrie, S. Polanc, M. Tisler, Ljubljana, YU

P 7.34	A New Class of Aza-Analogues of Sesquifulvalene: 4-(Azolylidene)-1,4-dihydropyridines
	E. Alcalde, I. Dinares, Barcelona, E, J. Elguero, Madrid, E, C. Jaime, Bellaterra, E, J.P. Fayet, M.C. Vertut, Toulouse, F

P 7.35	2-(3-TMS)-Furyl-tetramethyldiamidophosphate and t- Butyldimethylsiloxyfuran as Prescursors to 2(3H)- or 2(5H)-Furanones
	J.H. Näsman, Akademig, SF

P 7.36	The Study of Nucleophilic Vinyl Substitution Reaction of Nitrofuran and Nitrothiophene Derivatives
	D. Vegh, V. Knoppova, J. Kovac, M. Dandarova, Bratislava, CS

P 7.37	The Synthesis and Reactivity of bis-Furo- and Furothieno-thiepinones. New Synthesis of Heterocyclic Thiolactones.
	D. Vegh, Bratislava, CS, B. Decroix, J. Morel, Mont Saint Aignan, F

P 7.38	N-/2,5-Dimethyl-3-furyl/-N'-arylthioureas and N-/2,5- Dimethyl-3-furoyl/-N'-arylthioureas. Preparation and Reaction
	V. Zvak, A. Jurasek, V. Badory, Bratislava, CS

P 7.39	Addition and Cyloadditionreactions of Benzo[b]furo[3,2-b]pyrrole Derivatives with Dimethyl-butinedioate
	A. Krutosikova, M. Dandarova, J. Kovac, Bratislava, CS

P 7.40	Novel Synthesis of the Condensed Heterocycles Containing 4H-Pyrane Skeleton
	D. Ilavsky, S. Marchalin, J. Kovac, Bratislava, CS

P 7.41	Synthesis and Reaction Azolo [4,5-f]and [4,5-h]quinolines
	V. Milata, D. Ilavsky, V. Bobosik, Bratislava, CS

P 7.42	A Simple Synthesis of [3.2-c]Dibenz-1,3-oxazines
	G. Bernath, F. Fülöp, L. Lazar, Szeged, I. Pelczer, Budapest, H

P 7.43	Cycloaddition of Cis-, Diexo- and Diendo-Condensed Dihydro-1,3-oxazines
	G. Stajer, A.E. Szabo, G. Bernath, Szeged, P. Sohar, Budapest, H

P 7.44	Preparation and Steric Structures of Norbornane-Fused 4,1-Oxazepinones
	G. Bernath, G. Stajer, A.E. Szabo, Z. Szoke-Molnar,Szeged, P. Sohar, Budapest, H

P 7.45	Synthesis of New Pyrido[1,2-a]pyrimidines and Triazolo[2,3-a]pyridines by means of Ethoxymethylenemalonic Ester and Dimethyl Formamide Dimethylacetale.
	K. Gall-Istok, G. Deak, Budapest, H

P 7.46	1,3-Dithiolo[4,5-c]quinolines and 1,4-Dithieno[2,3-c]quinolines from 4-Chloro-3-(1-alkenylthio)quinolines
	A. Maslankiewicz, L. Skrzypek, Sosnowiec, PL

P 7.47	Significant Steric and Electronic Effects in Synthesis of Substituted Pyrazolones
	V. Dragutan, F. Chiraleu, Bucharest, Romania

P 7.48	The Chemistry of Pyridones (Quinolones) Substituted at Position-1 with a 2‑Thiazolylmethyl group. Formation of a Stable Carbon-Nitrogen-Ylid
	P.T. Izzo, V.J. Lee, Pearl River, NY, USA

P 7.49	Base-Induced Fragmentation of 1,2,4-Oxadiazolines
	R.A. Aitken, St. Andrews, GB

P 7.50	New Synthesis of Substituted 1,2-Oxaphosphorenes
	I. Yavari, Teheran, Iran

P 7.51	Synthesis of Some New Thiohydantoin Derivatives with Possible Antithyroid Activity
	S.C. Mehra, Bareilly, IND

P 7.52	Charge-Trans1er Complexes of Imidazole-2-Thiones with Sulphur Dioxide
	A. Suszka, Poznan, PL

P 7.53	Synthesis of Methyl Analogue of Antitumor Agent (αS,5S)-α-Amino-3-chloro-4,5-dihydro-5-isoxazoleacetic Acid
	J. Nyitral, Z. Gombos, P. Kolonits, Budapest, H

P 7.54	Synthesis and Pharmacological Properties of Some 8-(1- Phenyl-5-arylpyrazol-3-yl)-7-hydroxy-4-methylcoumarins and 8-(5-Arylisoxazol- 3-yl)-7-hydroxy-4-methylcoumarins
	P.M. Band, Akola, IND

P 7.55	A Convenient Synthesis of γ- and δ-Lactones
	N.C. Barua, M. Plewe, R.R. Schmidt, Konstanz

P 7.56	Aryl Substituted Amides of β-Ketothioacids in the Synthesis of 1,3-Oxazine and 1,3-Thiazetidine Derivatives
	W. Zankowska-Jasinska, M. Burgiel, Krakow, PL

P 7.57	Regiospecific Alkylation of Some β-Ketothioacetic Acid Anilides to 1,3-Thiaza-Heterocycles
	W. Zankowska-Jasinska, K. Mach, Krakow, PL

P 7.58	Oxidation and Nitration of Nitrogen Bridgehead Compounds by Clay-Supported Ferric Nitrate
	I. Hermecz, M. Balogh, Budapest, Hungary, P. Pennetreau, Liège, B

P 7.59	Preparation of 4-Vinyl-2(5H)-furanoid Structural Unit via Organosilicon and - Selenium Intermediates
	S.I. Pennanen, Kuopio, SF

P 7.60	The Synthesis of Heterocyclic Amino Acid Derivatives and Dipeptides
	U. Urleb, B. Stanovnik, J. Svete, I. Drofenik, M. Tisler, Ljubljana, YU

P 7.61	Synthesis of 1-Aroyloxy-1,2,3-triazoles, New Aroyl Transfer Agents
	N.E. Alexandrou, A.B. Theocharis, A.J. Maroulis, C.P. Hadjiantoniou- Maroulis, Thessaloniki, GR

P 7.62	Regioselectivity in Methylation and Phenylation of Tetrazolopyridine and its Benzeneologues
	A. Messmer, G. Hajos, Z. Juhasz-Riedl, P. Benho, Budapest, H

P 7.63	Synthesis and Chemical Properties of 2-Hydroxy-benzo[b]pyrido[2,3,4-gh]pyrrolizine Derivatives
	J. Fischer, M. Major, Budapest, H

P 7.64	Synthesis of Heterocycles of Biological Interest via Reactions of Organometallic Compounds with Nitriles
	B.J. Wakefield, M. Davis, Salford, GB

P 7.65	An Extremely Efficient Non-Peptidal Approach to the Cyclopeptide Alkaloids Via Novel Oxazolophane Intermediates
	W. Vaccaro, B.H. Lipshutz, B. Huff, K.E. McCarthy, S.M.J. Mukarram, H. Webb, A.M. Falick,Santa Barbara, CA, USA

P 7.66	New Syntheses of Stabilized 2-Methylen-2H-thiopyranes
	W. Weißenfels, M. Pulst, D. Greif, Leipzig, DDR

P 7.67	3-Acylchroman-4-ones in Heterocyclic Synthesis
	J.D. Hepworth, C.D. Gabbutt, Preston, GB

P 7.68	Syntheses of Some Bioquinolines
	K.B. Nair, Baroda, IND.

P 7.69	Synthesis of Fluorine-Containing Heterocyclic Aromatic Compounds
	Ch. Ch. Sung, L.Sh. Qiun, Ch. M. Jen, Ch. De Hua, Shanghai, PR of China

P 7.70	N-Substituted Dihydrocinnolinones and N-Amino-oxindoles
	L. Baiocchi, M.Bonanomi, Rome, I

P 7.71	Formation of 4-Benzamidoisoxazole Derivatives
	K. Harada, Sh. Zen, Tokyo, J

P 7.72	Studies with Cyanomethylsubstituted Azoles: New Routes for Synthesis of Pyrazolopyridine Derivatives
	M.A.H. Elmoghayar, M.H. Elnagdi, Giza, Egypt

P 7.73	Reactions of Cyanothioacetamide and its Derivatives with Hydrazidoyl Halides: A Novel Synthesis of Some Hydrazidoyl Sulfides, Thiazole and Thiadiazoline Derivatives
	A.O. Abdelhamid, S.E. Abdou, Giza, Egypt

P 7.74	Reactions with Cyanothioacetamide and Related Compounds: Syntheses of Several New Thiopyrano[2,3-c]pyrazoles and Thiazolylpyridine Derivatives
	S.E. Abdou. F.A. Attaby, Giza, Egypt

P 7.75	A New Convenient Synthesis of Indeno[2,1-c]quinoline Derivatives
	S.N. Dhawan, M.A. Quraishi, Jabalpur, IND

P 7.76	Syntheses of Fully Unsaturated Monocyclic 1,4-Oxazepines and 1,4-Diazepines
	T. Tsuchiya, J. Kurita, K. Iwata, Kanazawa, J

P 7.77	3-Amino-4,4-dicyano-3-butenoate, a Key Intermediate for the Syntheses of Novel Pyridine and Pyridazine Derivatives
	M. Mittelbach, Graz, A

P 7.78	Heterocyclic Compounds from Dicyanoacetic Acid Esters
	D. Kikelj, A. Neidlein, Heidelberg

P 7.79	Preparation of Functionalized Cyclophanes by Cleavage of 1,2,5-Thiadiazole Ring
	T. Hatta, Sh. Mataka, K. Numano, M. Tashiro, Fukuoka, J

P 7.80	Preparation and Reduction of Benzo-, Benzobis- and Benzotris[1,2,5]thiadiazole
	Sh. Mataka, K. Takahashi, H. Eguchi, M. Tashiro, Fukuoka, J

P 7.81	Preparation of 9-Methoxycarbonyl-dinaphtho[2,1-b:1',2'-d]thiophene-5-carboxylic Acid
	M. Bajic, G. Karminski-Zamola, Zagreb, YU

P 7.82	Phosphorus-Betaines from Iminophosphoranes Derived from N-Aminoheterocycles and Aliphatic Isocyanates
	P. Molina, M. Alajarin, C. Lopez, R.M. Claramunt, J. Elguero, Madrid, E

P 7.83	Synthesis of Benzoluranyl Pyridine Derivatives of Expected Antimicrobial Activity
	O.H. Hishmat, D.S. Farrag, Cairo, F.M. Abdel Galil, Giza, Egypt

P 7.84	Synthesis of Diethyl 3-Oxo-alkanedioates and Reactions with EthoxymethylenemaIononitrile
	H.W. Schmidt, M. Klade, Graz, A

P 7.85	Aminopyrazolo[3,4-b]pyridine and its Imine Derivatives
	W.O. Lin, E.C. Salgado, Rio de Janeiro, Brasil

P 7.86	Action of Organometallic Azide on α,β- Unsaturated Carbonyl Compounds as a Route to Some Heterocyclic Compounds
	Z.S. Salih, H.T. Al-Badri, Baghdad, Iraq

P 7.87	Synthesis, Tautomerism and Reactions of Quinoline and Thienopyridine Systems which Bear a 1-Carboethoxy-1-cyanomethyl Substituent in the Pyridine Ring
	L.H. Klemm, J. Lu, D.S. Greene,W. Boisvert, Eugene, Oregon, USA

P 7.88	Heterocycles Syntheses through Reactions of Nucleophiles with Acrylonitriles; Part (II)
	F.F. Abdel-Latif, El-Minia, Egypt

P 7.89	Photochemical Reactions of Indoline-2-thiones
	T. Nishio, N. Okuda, Y. Omote, Ibaraki, J

P 7.90	Tautomerism in 2-Ketomethyl Quinolines
	J.V. Greenhill, Bradford, GB

P 7.91	New Synthesis of 6-Chloro-1,2,4-triazolo[4,3-b]pyrido[2,3-d]pyridazines
	M.A. Hassan, Assiut (Qena), A.F.M. Fahmy, Cairo, Egypt

P 7.92	Uses of 1,4-Dichlorodiazanthracene in Synthesis of Some Condensed Heterocyclic Systems
	A.F.M. Fahmy, El-S. H. Eltamany, M.O. Orabi, Cairo, Egypt

P 7.93	Synthesis of Biologically Active Benzopyran Derivatives
	I. Zeid, A. EL-Torgoman, S. El-Kousy, A. Khattab, Shibin El-Koam, Egypt

P 7.94	4-Substituted Isoxazoles as Latent 2-Substituted Malondialdehydes in the Synthesis of 5-Deazafolic Acid Analogues
	E.M. Parker, E.C. Taylor, Princeton, NJ, USA

P 7.95	Asymmetric Synthesis of b-Lactams, Amino-Alcohols and Amino-Acid Derivatives
	M. Cérésiat, L. Ghosez, S. Bogdan, C. Frydrych, A. Gnagnarella, J. Marchand-Brynaert, Louvain-La-Neuve, B

P 7.96	Investigation into the Synthesis of Pyrrolidino[3,4-f]quinazoline Heterocycles
	H.P. Wang, C.K. Yang, S.J. Hu, Taiwan, R China

P 7.97	Synthesis of Functionalized Phenoxyisochromans and Study of their Photochemical Reactivity
	F. Cottet, L. Cottier, G. Descotes, Villeurbanne, F

P 7.98	Enantioselective Synthesis of Chiral Heterocyclic Sulfones
	R. Davis, Palo Alto, CA, USA

	8. Macroheterocycles

P 8.1	Synthesis and Structure of 7,9-Diethyl-bisbenzimidazo[2,1-f:1',2'–i][1,5,2,4,7,9]dithiatetraazacyclodecane-6,6,10,10-tetraoxide.
	J. Frigola, A. Colombo, J. Mas, C. Miravitlles, E. Molins, J. Pares Barcelona, E

P 8.2	New Polyether Crowns with 3,5-Disubstituted Pyrazole Units. Their Evaluation as Carriers of Alkali Metal and Ammonium Cations through a Liquid Membrane
	P. Navarro, L. Iturrino, M.I. Rodriguez-Franco, Madrid, E

P 8.3	Polyfluorinated Dibenz[b,f][1,4]oxazepines
	T.N. Gerasimova, N.I. Petrenko, Novosibirsk, SU

P 8.4	Synthesis and Properties of Phencyclidine Analogues Having Polyether Function
	M. Yogo, K. Okayama, T. Nabeshima, M. Hiramatsu, T. Kameyan H. Furukawa, Nagoya, J

P 8.5	N,N'-Disubstituted Bis-diaza-crown Ethers
	G. Gai, L. Ping, Z. Qi, Z. Yiwei, C. Cenghzi, Guangzhou, PR of China

P 8.6	Sterically-hindered Zinc Porphyrins for Solar-Energy Conversion
	L.R. Milgrom, Kingston upon Thames, J. Davila, A. Harriman, M. Richoux, London, GB

P 8.7	Reactions of Coordinated Polyolefins. Sigmahaptotropic Rearrangements Involving Nitrogen Migration
	Z. Goldschmidt, H.E. Gottlieb, A. Almadhoun, Ramat-Gan, IL

P 8.8	Porphycenes and Metalloporphycenes
	M. Köcher, M. Balei, K. Pramod, J. Lex, E. Vogel, Kö1n

	9. Molecular Modeling in Heterocyclic Drug Design

P 9.1	Kinetic and Theoretical Studies on the Oxidation of Substituted N-Phenyl-1,4-dihydropyridines
	D. Winwood, M.E. Brewster, Z. Gobanyi, K. Czako, A. Simay, N. Bodor, Gainesville, FL, USA

P 9.2	Tri-and Penta-valent Arsenic, Antimony and Bismuth
	B. Singh, S.A. Khan, Patna, IND

	Last Minute Posters

LMP 18	Synthesis of 5,6-Substituted 2-Thianorbiphenylenes by Cobalt-catalyzed (2+2+2) Cycloaddition Reactions
	S. Spyroudis, K.P.C. Vollhardt, Berkely, CA, USA

LMP 19	Synthesis, Structure and Properties of Oxo- and Aza- Magnesia Cycles and Magnesium Anthracene Systems
	G. Koppetsch, B. Bogdanovic, N. Janke, J. Treber, Mülheim

LMP 20	The Synthesis of 5-Phosphono-1,2,4-triazol-3-one as a Potential Inhibitor of the Enzyme Epsp Synthetase
	J.A. Sikorski, D.K. Anderson, St. Louis, MO, USA

LMP 21	Bilinked bis-Acridines
	D. Dhif, J.P. Galy, E.J. Vincent, J. Barbe, Marseille, F

LMP 22	Investigations in the Synthesis of 2-Chloro-3-substituted Quinolines
	F. Kóródi, Z. Cziáky, Z. Salamon, Tiszavasvári, H

LMP 23	Stable Derivatives of 7,8-Dihydropurines
	W. Pendergast, W.R. Hall, Research Triangle Park, NC, USA

LMP 24	Synthesis of 3-Hydroxythiophenes and 3- Hydroxyselenophenes tram Substituted b-Chloro Acrylic Acid Methyl Esters
	E. Didier, G. Kirsch, Metz, F

LMP 25	Benzimidazole Analogues Containing a Bridgehead Nitrogen as Novel, Potent Cardiotonic Agents
	W.A. King, P. Barraclough, R. Iyer, C.O. Kneen, M.S. Nobbs, G.P. Shah, S. Smith, S.J. Vine, Beckenham, Kent, GB

LMP 26	A 2-Step Synthesis of Spiroketals
	P. Pale, J. Chuche, Reims, F

LMP 27	Substituted Thiadiazole Amidines as potential Anticonvulsants
	C.B. Chapleo, P.L. Myers, A.C.B. Smith, M.R. Stillings, I.F. Tulloch, D.S. Walter, Hull, GB

LMP 28	Synthesis and Biological Characterization of Pyridohomotropanes
	D.B. Kanne, Richmond, CA, L.G. Abood, Rochester, NY, USA

LMP 29	2H-Benzimidazole as Synthon in Heterocyclic Chemistry Synthesis and Reactions of 5-Azido-2H-benzimidazole-2- spirocyclohexane
	H. Uhl, R. Neidlein, H. Suschitzky, W. Kramer, Heidelberg

LMP 30	First total Synthesis of Fumitremorgin C (FT-C) and an Approach to Verruculogen, TR-2
	P.H.H. Hermkens, R. Plate, H.C.J. Ottenheijm, Nijmegen, NL

LMP 31	8-Oxa Analogues of 2,4-Diamino-7,8-dihydropteridines
	P.H. Boyle, R.J. Lockhart, S. Stokes, Dublin, Ireland

LMP 32	Synthesis and NMR-Studies of Macrolide-Type Paracyclophanes
	I. Heinze, H. Fritz, Basle, CH, F. Borle, W. Eberbach, Freiburg/B.

LMP 33	Use of D-Fructofuranosyloxazoline Precursors in 5-Aminoimidazole Nucleoside Synthesis
	G. Mackenzie, Hull, GB, A. Grouiller, Villeurbanne, F, B. Najib, Villeurbanne, F, G. Shaw, Bradford, GB, H. Pacheco, Villeurbanne, F

LMP 34	The Monocyclic Selenepine
	K. Yamamoto, H. Hori, I. Murata, Osaka, J

LMP 35	Some New Examples of Heterocyclization Induced by a Silyl Group
	B. Ringo, P. Cauliez, S. Taisne, D. Valigny, Lille, F, D. Couturier, Villeneuve, F

LMP 36	About the Synthesis of N-1-Substituted 3-Aminopyrroles, A Comparison
	A.M. Almerico, G. Cirrincione, G. Dattolo, E. Aiello, Palermo, I

LMP 37	Protonation of 3-Aminopyrroles
	A.M. Almerico, G. Cirrincione, G. Dattolo, E. Aiello, Palermo, I, R.A. Jones, Norwich, GB, W. Hinz, Montreal, CDN

Wednesday, August 19

(Building 252, Room A)

8.30 - 9.30 hrs	PL 5	About the Synthesis and Reactivity of Functionalized Three-membered Iminoheterocycles
		G. L’abbé, Heverlee, B
		Introduction: A. Dondoni, Ferrara, Italy

9.30 - 10.30 hrs	PL 6	Stereochemical Control in Macroheterocycles
		C. Still, New York,
		Introduction: R.R. Schmidt, Konstanz

10.30 - 11.00 hrs		Coffee Break

11.00 - 12.00 hrs	PL 7	Stereoselective Total Synthesis of Macrolide and Polyether Antibiotics
		O. Yonemitsu, Sapporo, J
		Introduction: W. Simon, Zurich, Switzerland

14.00 hrs		Excursion

Thursday, August 20

(Building 252, Room A)

8.30 - 9.30 hrs	PL 8	Heterocycles for Agriculture: Catalysts, Intermediates, Plant Protection Products
		D. Bellus, Basle, CH
		Introduction: J. Streith, Mulhouse, France

9.30 - 10.30 hrs	PL 9	New Cycloadditions in Organic Sulfur Chemistry
		A. Huisgen, Munchen
		Introduction: H.C. van der Plas, Wageningen, Netherlands

10.30 - 11.00 hrs		Coffee Break

SECTION A (Building 252, Room A)

		7. Heterocycles in Organic Synthesis
		Chairman: K.-Ch. Liu, Taipei, R. China

11.00 - 11.20 hrs	SC 58	Model Cyclic Diamides Characteristic of the Cyclopeptide Alkaloids. Cyclization Studies
		B. Huff, B.H. Lipshutz, Santa Barbara, CA, USA

11.20 - 11.40 hrs	SC 59	A Stereoselective Synthesis of Dialkylaminomethyl-Substituted Halobutadienes via Amine-Induced Ring-Opening of Thiophene-1,1-dioxides
		S. Gronowitz, A. Hallberg, G. Nikitidis, Lund, S

11.40 - 12.00 hrs	SC 60	Tri-tert-Butylazete - The First Kinetically Stabilized Azacyclobutadiene
		M. Regitz, U-J. Vogelbacher, U.Hees, T. Schach, M. Ledermann, S. Arenz, Kaiserslautern

12.00 - 12.20 hrs	SC 61	Formation of Oxidised Chiral Thiazolines and Thiazolidinones and their Use in Asymmetric Synthesis
		R.A. Aitken, D.P. Armstrong, St. Andrews, GB

12.20 - 12.40 hrs	SC 62	Transformation of Aldehydes into Nitriles by N-Amino-cyclopenta [e]1,2,4-triazines
		H. Neunhoeffer, U Karafiat, W. Diehl, Darmstadt

12.40 - 14.30 hrs		Lunch Break

		Chairman: M. Regitz, Kaiserslautern
14.30 - 14.50 hrs	SC 63	A Novel Approach to the Asymmetric Synthesis of the Seco-Acid of Erythronolide A via Furan Intermediates
		S.F. Martin, R.P. Gist, T.A. Mulhern, G.J. Pacofsky, Austin, TX, USA

14.50 - 15.10 hrs	SC 64	Synthesis and Chemical Behavior of 2,5-Dihydropyrimidines Bearing Chiral Substituents
		A.L. Weis, D.E. Corcoran, Rochester, NY, USA

15.10 - 15.30 hrs	SC 65	Claisen Rearrangement in 1,3,5-Triazines - Novel Rearrangement of 2,4-Diamino-1,3,5-triazinyl-6-propargyl Ethers and 2-Amino-1,3,5-triazinyl-4,6-dipropargyl Ethers
		G. Bhavani, K.K. Balasubramanian, Madras, IND

15.30 - 16.30 hrs		Poster Session 3 / Coffee Break

		Chairman: B. Iddon, Salford, Great Britain
16.30 - 16.50 hrs	SC 66	Permanganate Catalyzed Low Temperature Thermolysis of 1,2,3-Triazolines
		P.K. Kadaba, G. Parmley, B. Agha, Lexington, KY, USA

16.50 - 17.10 hrs	SC 67	Synthesis of 2H-Naphtho [1',2':4,5]thiazolo(3,2-b )-1,2,4-triazine Derivatives
		K.-Ch. Liu, Taipei, Rep. of China

17.10 - 17.30 hrs	SC 68	Intramolecular Rhodium Carbenoid Insertions into Aromatic C-H Bonds
		T. Durst, M. Hrytsak, S. Babu, N. Etkin, Ottawa, CDN

SECTION B (Building 306, Room B)

		6. Heterocyclic Pharmaceuticals and Agrochemicals
		8. Macroheterocycles
		Chairman: E. Vilsmaier, Kaiserslautern

11.00 - 11.20 hrs	SC 69	Preparation of Novel Diaza Analogues of Pharmaceutically Important Tricyclic Ketones
		G. Heinisch, W. Dostal, N. Haider, D. Labnigg, G. Lötsch, Vienna, A

11.20 - 11.40 hrs	SC 70	Stereoselective Cycloaddition of Enolsilylether with Chlorosulfonylisocyanate
		T. Ohashi, K. Kan, N. Ueyama, I. Sada, A. Miyama, K. Watanabe, Takasago-Hyogo, J

11.40 - 12.00 hrs	SC 71	Synthesis and Photochemistry of Some Methylfurocoumarins
		S. Mohr, C.C. Gerdes, Kiel, FGR

12.00 - 12.20 hrs	SC 72	The Introduction of a New Sulfamoylation Reagent and its Use in the Preparation of Compounds Related to H₂-Antagonist RGW 2568. Versatile Synthesis of 3-Amino-4-N-alkyl and 3-Amino-2-N-alkyl-5-aryloxy-1,2,4,6-thiatriazine-1,1-dioxides
		R.A. Galemmo, Jr., P.J. Durham, Horsham, PA, USA

12.20 - 12.40 hrs	SC 73	Imidazo[4,5-e] [1,3]Diazepines, Novel Purine Analogs
		P.K. Bridson, D.J. Bark, C. Wilson, Memphis, TN, USA

12.40 - 14.30 hrs		Lunch Break

		Chairman: H. Suschitzky, Salford, Great Britain
14.30 - 15.00 hrs	ML 19	Cephem Inhibitors of Human Leukocyte Elastase
		J.B. Doherty, Rahway, NJ, USA

15.00 - 15.30 hrs	ML 20	Large Scale Stereospecific Synthesis of 1,3-Dioxan Thromboxane Antagonists
		S.A. Lee, Macelesfield, Cheshire, GB

15.30 - 16.30 hrs		Poster Session 3 / Coffee Break

		Chairman: F.A. Neugebauer, Heidelberg
16.30 - 16.50 hrs	SC 74	A New Class of Square Planar N₂O₂ Tetradentate Ligands: 6,6'‑bis(Acylamino)-2,2'-bipyridines
		Sh. Shiraishi, K. Araki, M. Yamada, Tokyo, J

16.50 - 17.10 hrs	SC 75	Synthesis and Characterization of New Soluble Processible Conducting Ladder Polymers and their Model Compounds: -The Role of Extensively Delocalized π-Electrons in Electrical Conductivity and Non-Linear Optical Properties
		J. Thomson, L.R. Dalton, Los Angeles, CA, USA

17.10 - 17.30 hrs	SC 76	The Role of Isocyanate Derived Heterocycles in Industrial Polymers
		H. Ulrich, North Haven, CT, USA

SECTION C (Building 252, Room C)

		4. Small Ring Heterocycles
		Chairman: J.G. Schantl, Innsbruck, Austria

11.00 - 11.20 hrs	SC 77	Thietones and Oxetones
		C. Wentrup, H. Bender, S.W. Tan, St. Lucia, Queensland, AUS

11.20 - 11.40 hrs	SC 78	Fluorinated 1,2,3-Triazines
		R.D. Chambers, M. Tamura, T. Shepherd, M.A. Bryce, Durham, GB

11.40 - 12.00 hrs	SC 79	Spectroscopic Characterization and Photochemistry of Dioxiranes
		W. Sander, Heidelberg

12.00 - 12.20 hrs	SC 80	The Steric Course of Aziridine Ring Opening in Substituted Phenanthrene Oxides and Imines A Probe for the Reaction of Arene Imines with Cellular Nucleophiles
.		J. Blum, S. Shtelzer, AY. Meyer, T. Sheradsky, Jerusalem, IL

12.20 - 12.40 hrs	SC 81	4-Chlorooxetan-2-ones: Versatile Intermediates for Heterocyclic Synthesis
		J. Dingwall, Basle, CH, R.L. Bentley, J. Gainer, B. Tuck, Manchester, GB

12.40 - 14.30 hrs		Lunch Break

		Chairman: R.D. Chambers, Durham, Great Britain
14.30 - 15.00 hrs	ML 21	Some Skeletal Reorganization in Sulfur Heterocycles
		I. Murata, Osaka, J

15.00 - 15.30 hrs	ML 22	Extrusion of Molecular Nitrogen from 4-Oxo- and 4-Methylen-3,5,5-trialkyldihydro-1,2,3-triazoles. A Route to Aziridinones and Cyclopropanimines
		H. Quast, Würzburg

15.30 - 16.30 hrs		Poster Session 3 / Coffee Break

		Chairman: W. Pfleiderer, Konstanz
16.30 - 16.50 hrs	SC 82	Three-Membered Hypervalent Thiaheterocycles
		U. Zoller, Haifa, IL

16.50 - 17.10 hrs	SC 83	Novel Synthesis and Reactions of 1,2-Diazetidinones
		J.G. Schantl, M. Decristoforo, Innsbruck, A

17.10 - 17.30 hrs	SC 84	Benzoannelated 2H-Boretes and 1-Boroles- Highly Reactive Molecules
		D. Kaufmann, W. Schacht, Hamburg

SECTION D (Building 252, Room D)

		10. Naturally Occuring Heterocycles
		11. X-Ray-Structure Analysis of Heterocycles
		Chairman: H. Kubinyi, Ludwigshafen/Rh.

11.00 - 11.20 hrs	SC 85	A Novel, Concise Total Synthesis of the Antimalarial Alkaloid, Febrifugine
		N. D.A. Walshe, Sandwich, Kent, GB

11.20 - 11.40 hrs	SC 86	Naturally Occurring Heterocycles Inducing Drought Resistance in Plants: Two Diketopiperadines Isolated from Rabbit Skin Tissue Extract
		K. Ienaga, K. Nakamura, M. Kurohashi, Hyogo, T. Goto, Nagoya, T. Nakanishi, T. Ichii, Kobe, J

11.40 - 12.00 hrs	SC 87	Synthetic Studies of (+)-Breynolide
		D.R. Williams, Bloomington, IND

12.00 - 12.20 hrs	SC 88	Total Synthesis of Teleocidin B
		Sh. Nakatsuka, T. Masuda, T. Goto, Nagoya, J

12.20 - 12.40 hrs	SC 89	Total Synthesis of (+)-(3'S,6'R)-3'6'-Epoxy-aurapten and (+ )-(R)-Marmin
		F. Rouessac, M. Aziz, Le Mans, F

12.40 - 14.30 hrs		Lunch Break

		Chairman: M. Tisler, Ljubljana, Jugoslavia
14.30 - 15.00 hrs	ML 23	Structure and Tautomerism of Indolo[2,1b]quinazolines
		J. Bergmann, Stockholm, S

15.00 - 15.30 hrs	ML 24	The Conformational Ins and Outs of Medium-ring Diamines
		R.W. Alder, Bristol, GB

15.30 - 16.30 hrs		Poster Session 3 / Coffee Break

		Chairman: H. Quast, Würzburg
16.30 - 16.50 hrs	SC 90	Crystallographic, Theoretical and Molecular Modelling Studies on the Conformations of Potential Antipsychotics
		T. Högberg, U. Norinder, S. Rämsby, B. Stensland, Stockholm, S

16.50 - 17.10 hrs	SC 91	Synthesis of Spiro-eburnane-14-heterocycles
		A. Nemens, J. Kreidl, Budapest, H

17.10 - 17.30 hrs	SC 92	Studies on Bis- and Tris-Indolizinylmethanes
		O. Ceder, M.R. Sharif, L. Baltzer, L. Andersen, Goteborg, S

SECTION E (Building 306, Room E)

		12. New Synthetic Methods in Heterocyclic Chemistry
		Chairman: S. Shatzmiller, Tel-Aviv, Israel

11.00 - 11.20 hrs	SC 93	Synthesis of Cyclic Ethers and their Utility in Synthesis of Natural Products
		A. K. Banerjee, H. Hurtado S., J. Alvarez G., Caracas, Venezuela

11.20 - 11.40 hrs	SC 94	New Synthesis of Furoquinolones and Furocoumarins by Means of [2+2] Photocycloaddition - β-Scission Sequence
		H. Suginome, K. Kobayashi, Ch. F. Liu, M. Itoh, S. Seko, Sapporo, J

11.40 - 12.00 hrs	SC 95	Reaction of o-Quinol Acetates Derived from N-Acyltetrahydroisoquinolinols
		O. Hoshino, H. Ogasawara, M. Suzuki, H. Suzuki, B. Umezawa, Tokyo, J

12.00 - 12.20 hrs	SC 96	Intramolecular Reactions of N-Acyliminium Ion Intermediates with Silyl Enol Ethers; Synthetic Approach towards the Alkaloid Gelsemine
		H. Hiemstra, R.J. Vijn, W.N. Speckamp, Amsterdam, NL

12.20 - 12.40 hrs	SC 97	Synthesis of Some Thieno-, Furo- and Imidazolo-c- Fused Quinolines
		A.-B. Hörnfeldt, S. Gronowitz, O. Peters, Y. Yang, Lund, S

12.40 - 14.30 hrs		Lunch Break

		Chairman: H. Neunhoeffer, Darmstadt
14.30 - 15.00 hrs	ML 25	Thiophene S-Ylides - A Versatile New Class of Compounds
		O. Meth-Cohn, E. Vuorinen, G. Van Vuuren, Pretoria, South Africa

15.00 - 15.20 hrs	SC 98	Synthesis of Functionalized Oxolanes, Pyrroles and Oxiranes from α-Chloroimines via 3-Chloro-1-azaallylic Anions
		N. De Kimpe, E. Stanoeva, R. Verhe, L. De Buyck, N. Schamp, Gent, B

15.20 - 16.30 hrs		Poster Session 3 / Coffee Break

		Chairman: I. Murata, Osaka, Japan
16.30 - 16.50 hrs	SC 99	Fused 1,2 ,3-Selenadiazoles
		I. Lalezari, Bronx, NY, USA

16.50 - 17.10 hrs	SC 100	An Efficient Synthesis of 13-Methylberbines
		R.S. Mali, Sh. D. Patil, Pune, IND

17.10 - 17.30 hrs	SC 101	3-Imidazolines
		D.C. Burdick, W.C. Nason, A. Rybak, Nutley, NJ, USA

Poster Session 3 (Building 252, Foyer)

	10. Naturally Occuring Heterocycles

P 10.1	Synthesis of Umbellifolide and Other Natural Eudesmanolides from Artemisin
	J.A. Marco, M. Carda, Valencia, E

P 10.2	Total Synthesis of (-)-Celacinnine, (±)-Celabenzine and (-)-Celafurine
	K. Fukuhara, T. Kikuchi, M. Machiba, H. Iida, Tokyo, J

P 10.3	Total Synthesis of Arglecin and its Related Compounds
	A. Ohta, Y. Aoyagi, Tokyo, J

P 10.4	Isolation and Structure of New Flavonoids from Lindera Genus
	H. Tanaka, K. Ichino, K. Ito, Nagoya, J

P 10.5	Synthesis of Cleomiscosin-A and Cleomiscosin-B, Coumarinolignoids
	K. Ito, I. Kato, H. Tanaka, Nagoya, J

P 10.6	Biomimetic Total Synthesis of Citromycetin
	M. Yamauchi, S. Katayama, T. Watanabe, Saitama, J

P 10.7	Mesuarin, a New 4-Phenyl Coumarin from Mesua Ferrea L.
	P. Bhattacharyya, Calcutta, IND

P 10.8	*New Triterpeniod Glycosides of Physiological Importance from Corchorus acutangulus* Lam.**
	S.B. Mahato, B.C. Pal, Calcutta, IND

P 10.9	A Useful Synthesis of Ethyl 2-allylindiole-3-carboxylate
	R.S. Mali, S.G. Tilve, Pune, IND

	11. X-Ray-Structure-Analyses of Heterocycles

P 11.1	X-Ray Structure Analyses of Novel Heterocycles of the V and VI Main Group
	A. Gieren, T. Hübner, J. Wu, Innsbruck, A, and Martinsried

P 11.2	Confirmation on the Ring Transformation of Isoquinoline-4-ylidene Compounds into Isoindolines
	H. Otomasu, K.-I.-Kawai, H. Nagase, Tokyo, J

P 11.3	X-Ray Structure of Some Imidazolyl-ketones
	C. Luu-Duc, C. Soula, A. Marsura, Grenoble, F

P 11.4	The Crystal Structure of 1,10-Epoxyachillin
	J.A. Marco, C. Martinez, O. Barbera, J. Sanchez-Parareda, Valencia, E, J. Lex, D. Strack, B. Meurer, Kö1n

P 11.5	Theoretical Prediction and Experimental Evidence of Dimorphism in Crystalline Glycoluril
	E. Wimmer, J. Boileau, Paliseau, B. Blaive, R. Gallo, M. Pierrot, Marseille, F

P 11.6	The Use of NMR-Parameters for Analysis of Tautomerism
	M. Begtrup, Lyngby, DK

P 11.7	Carbon-13 Chemical Shift of 1-R-2,4,6-Trimethyl pyridinium Salts
	S.R. Salman, A.H. Hassan, Baghdad, IRC

P 11.8	Syntheses, NMR- and IR-Studies of Some Metal and Metal-Free Phthalocyanine-tetra (3- and 4-)cyclopropylsulphonamides
	H.K. Yahya, A.A. Dawood, Baghdad, IRC

	12. New Synthetic Methods in Heterocyclic Chemistry

P 12.1	Quinone Facilitated 1,5-Electrocyclization Reactions
	W. Verboom, E.O.M. Orlemans, B.H.M. Lammerink, F.C.J.M. van Veggel, D.N. Reinhoudt, Enschede, NL

P 12.2	A New Aspect of the Leuckart Reaction
	G. Bernath, F. Fülöp, Szeged, Hungary, K. Pihlaja, Turku, SF

P 12.3	Stereospecific Synthesis and 400 MHz-NMR Investigation of Oxazinoisoquinoline Derivatives
	G. Dombi, F. Fülöp, L. Lazar, G. Bernath, Szeged, H

P 12.4	Synthesis of 5-Thia- and 5,13-Dithiaprotoberberine Derivatives
	J. Szabo, G. Bernath, A. Katocs, L. Fodor, Szeged, P. Sohar, Budapest, H

P 12.5	The Ring-Chain Tautomerism of 1,3-Oxazines
	F. Fülöp, G. Bernath, Szeged, K. Pihlaja, J. Mattinen, Turku, SF

P 12.6	A Facile Synthesis of 5-Oxa-13-thiaprotoberberine Derivatives
	J. Szabo, G. Bernath, Szeged, P. Sohar, Budapest, H

P 12.7	Mechanism of the Deamination of 1-Aminopurinium Salts by Ammonia
	D.A. de Bie, N.J. Kos, H. Jongejan, H.C. van der Plas, Wageningen, NL

P 12.8	Functionalization of 2-Haloquinolines by Directed Ortho-Lithiation. Synthesis of New Quinoline Synthons and Polycondensed Heterocycles.
	F. Marsais, A. Godard, G. Queguiner, Mont Saint Aignan, F

P 12.9	Heterocycle Formation from 1,3-Dinitroalkanes
	F. Cabrera Escribano, M.P. Derri Alcantara, A. Gomez-Sanchez, Sevilla, E

P 12.10	Synthesis of 5-(D-Galacto-pentaacetoxypentyl)-1-methylpyrazoles from Sugar Nitroolefins and Aldehyde Methylhydrazones
	J.M. Lassaletta, M. Gomez-Guillen, Sevilla, E

P 12.11	A Novel Synthesis of Imidazo[4,5-c]- and Pyrazino[2,3-c]-1,2,6-thiadiazine-1,1-dioxide Derivatives
	C. Ochoa de Ocariz, P.Goya, A. Herrero, J.A. Paez, Madrid, E

P 12.12	New Synthesis of Substituted Pyridine, Benzothiazine and Indole Derivatives from Halogenalkylisothiocyanates
	L. Kniezo, J. Gonda, P. Kristian, Kosice, CS

P 12.13	Simple Synthesis of 2,6-Dimethyl-4-isothiocyanato-1,3-di-oxane and its Dimerization to the Derivatives of 1,3,7,9-Tetraoxocyclododecane
	L. Kniezo, J. Bernath, P. Kristian, Kosice, CS

P 12.14	The Photochemical Synthesis of 2-Aryl-1,2-3-triazoles
	A.J. Maroulis, A.B. Theocharis, N.E Alexandrou, Thessaloniki, GR

P 12.15	Novel Pyridine Rearrangement Reaction
	Z. Swistun, Warsaw, Poland, H.C. van dar Plas, Wageningen, NL

P 12.16	Investigation of the Synthesis of Bromo Substituted (2,4,4-Dimethyloxazolinyl)-Pyridines
	F.C. Alderweireldt, M. Belmans, I. Vrijens, E.L. Esmans, M. Lameir, J.A. Lepoivre, Antwerpen, B

P 12.17	Palladium-Catalyzed C-C Coupling Reaction of Uracil Derivatives
	K. Hirota, Y. Isobe, Y. Kitade, Y. Maki, Gifu, J

P 12.18	Oxidative Photocyclization of N-Benzoyladenosine Derivatives. Facile Formation of Novel Quinazolinopurine Nucleosides
	Y. Maki, K. Shimada. M. Sako, K. Hirota, Gifu, J

P 12.19	Palladium Catalyzed Alkylations of Triacetic Acid Lactone
	M. Moreno-Manas, J. Ribas, A. Virgili, Barcelona, E

P 12.20	A New and Facile Synthesis of (±)-Lysergic Acid
	T. Kurihara, T. Terada, Sh. Harusawa, R. Yoneda, Osaka, J

P 12.21	Synthesis of Fused Pyridines from 3-Aroyl-4-chloropyridines and Nucleophilic Reagents
	M. Haimova, R. Radinov, E. Simova, S. Simova, Sofia, BG

P 12.22	Translocative Rearrangements: A Novel Transfer of an (N-Amino-N-methyl) aminomethylene Group from (N-Amino-N-methyl) formamidine Side-Chain to the Vinylogous Nitrile Function
	R.S. Hosmane, B.B. Lim, Baltimore, MD, USA

P 12.23	A Novel Synthesis of 1,2,3-Triazino[5,4-b]indole-N(3)-oxide Derivatives
	A. Monge, J.A. Palop, J.I. Recalde, Navarra, E. Fernandez-Alvarez, Madrid, E

P 12.24	Ethyl 3-Phenyl-4-nitroisoxazole-S-carboxylate: A Versatile Synthon for Bicyclic Ring Systems
	R. Nesi, D. Giomi, L. Quzartara, S. Papaleo, S. Bracci, Florence, I

P 12.25	Two Unexpected Transformations of N(1)-(2-Aminoethyl)-adenine Derivatives of NAD, NADP and FAD under Mild Aqueous Conditions
	A.F. Bückmann, V. Wray, Braunschweig, H.C. van der Plas, Wageningen, NL

P 12.26	Synthesis of Pyrrolizidine Alkaloids Using Olefin Cyclization Initiated by α‑Thiocarbocation
	H. Ishibashi, H. Ozeki, K. Maruyama, M. Ikeda, Kyoto, J

P 12.27	Cross-Coupling Reaction of Chloropyrazines with Indoles and Pyrroles
	Y. Akita, A. Ohta, Tokyo, J

P 12.28	Synthesis of Isoflavones by the Photochemical Reactions of 3-Halochromones
	I. Yokoe, Y. Shirataki, M. Komatsu, Saitama, J

P 12.29	Carbon Dioxide in Organic Synthesis: Synthesis of Oxazolidinone and Perhydrooxazinones via Carbamic Acid Amine Salts
	T. Toda, M. Yoshida, Y. Kitagawa, M. Ohshima, Utsunomiya, J

P 12.30	A Novel Synthetic Procedure for Preparation of 4- Amino-7-alkylindole Derivatives. Total Synthesis of Teleocidins A-1 and A-2
	H. Muratake, M. Natsume, Tokyo, J

P 12.31	Polyquinazoline Precursors: Synthesis from Dithiocarbamoyl Derivatives
	J. Garin, E. Melendez, F.L. Merchan, P. Merino,T.Tejero, Zaragoza, E

P 12.32	An Efficient Synthesis of Fused Benzothiazoles
	J. Garin, C. Guillen, E. Melendez, EL. Merchan, J. Orduna, TIejero, Zaragoza, E

P 12.33	A New Synthesis of 4-Aminooxazoles
	R. Lakhan, R.L. Singh, Varanasi, IND

P 12.34	Bis-Indazolo(2,3-b;3',2' -f)pyridazine: A Photolabile New Heteroaromatic Systems
	J. De Mendoza. J.C. Cuevas, P. Prados, Madrid, E

P 12.35	meta-Brigded Pyrazines from Reactions of 1,4-Diazinum Cations with Carbanions of Nitroalkanes
	O.N. Chupakhin, G.M. Petrova, M.G. Ponizovskii, V.N. Charushin, Sverdlovsk, SU

P 12.36	Regiospecific Synthesis of 4-Acetylpyrazoles
	M. Hubert-Habart, K. Tagaki, B. Kokel, A. Bajnati, Paris, F

P 12.37	Reaction of 1,2,3,4-Tetrahydro-isoquinoline Derivatives with Sulfur
	K.I. Ajzert, A. Takacs, K. Takacs, Budapest, H

P 12.38	2-Amino-4-substituted-pyrimido[6,1-a]isoquinolines: A Novel Type of Heterocyclic Pseudobases
	D. Korbonits, G. Horvath, K. Simon, P. Kolonits, Budapest, H

P 12.39	Synthesis of Boc-R and S-gln(Thz) and of Isomers of Dolastatin 3
	C.W. Holzapfel, W.J. van Zyl, Johannesburg, South Africa

P 12.40	Rearrangement Reactions in Bicyclic Peptide Heterocycles
	M. Rothe, K.-L. Roser, Ulm

P 12.41	Fused N-Tetracycles via Condensation of Protected ω-Hydroxyamides
	W. Meise, H.J. Mika, U. Mika, G. Schlüter, Bonn

P 12.42	Pyrrolinediones in Isoquinoline Alkaloid Synthesis
	N. Atanes, A. Cobas, G. Martin, E. Guitian, Santiago, J. Saa, L. Castedo, Palmade Mallorca, E

P 12.43	The Cross Coupling Connection to the Aromatic Directed Metalation Reaction. New General Syntheses of Condensed Heterocycles
	V. Snieckus, J.-m. Fu, M.J. Sharp, M.A. Siddiqui, Waterloo, Ont., CDN

P 12.44	Alkyl Oxalates as General Alkylating Agents
	P.O. Andersson, J. Bergman, Stockholm, S

P 12.45	Coupling of Indoleacetic Acid tri-Anion. A Biomimetic Approach to Indolocarbazole Alkaloids.
	B. Pelcman, J. Bergman, Stockholm, S

P 12.46	Intramolecular Ring Closure of α.b-Unsaturated 3-Acylindoles
	L. Venemalm, J. Bergman, Stockholm, S

P 12.47	Synthesis of Bicyclic and Tricyclic Heterocyclic Compounds from Dimethylallene-1,3-dicarboxylate and Nitrogen, Sulphur and Carbon Nucleophiles
	F. Scheinmann, G.J.S. Doad, D.I. Okor, Salford and Manchester, GB

P 12.48	Conformationally Constrained Dipeptide Lactams
	D. Ben-Ishai, R. Goldshare, A. Rabi, Haifa, IL

P 12.49	A New Synthesis of Dictamnine and Evolitrine and their Analogues
	P. Shanmugam, P. Rajamanickam, Coimbatore, IND

P 12.50	*A Facile Synthesis of Indolizino(3,4,5,6-cde)quinoxaline Ring System*
	K. Matoba, M. Sugiura, T. Terada, T. Yamazaki, Toyama. J

P 12.51	Heterocycles Fused with or linked to [1]Benzopyran from 2-Methyl-4-oxo-4H-[1]Benzopyrans
	C.K. Ghosh, C. Pal, J. Maiti, M. Sarkar, Calcutta, IND

P 12.52	Novel Synthesis of Benzo-1-thiacycloalkans: Noteworthy Cylization by the Reaction of Acetylene Alcohols in the Presence of Acids
	Y. Ishino, T. Hirashima, Osaka, J

P 12.53	A New Highly Efficient Synthesis of 3-(1H-Tetrazol- 5-yl)-4(3H)-Quinazolinone Sodium Salt via an Amidine- Type Intermediate
	A.P. Vinogradoff, Walnut Creek, CA, N.P. Peet, Indianapolis, IND., USA

P 12.54	*Unusual ortho-Directed Nucleophilic Substitution of 2,5-Dichloropyridine-carbonitriles*
	Y.C. Tong, Walnut Creek, CA, USA

P 12.55	Thermal Deamination in Selective Synthesis and Structural Determination of Some Condensed Heterocycles
	Y.A. Ibrahim, M.A. Badawy, S.A.L. Abdel-Hady, A.M. Kadry, Giza, ET

P 12.56	Selenium Heterocycles XXXVIII. Synthesis of Thieno[2,3-d]thiazoles, Thieno[2,3-d]selenazoles, Selenolo[3,4-d]thiazoles and Selenolo[3,4-d]selenazoles
	A. Shafiee, B. Habibi-Kahameneh, A. Shafaati, Teheran, IR

P 12.57	Regioselectivity of Wittig Reactions with Cyclic Anhydrides
	M-M. Kayser, L. Breau, Saint John, N.B. CDN

P 12.58	Some Unexpected Reactions of the 5-Amino-1-(2-aminophenyl)-3-methylthio-1H-1,2,4-triazoles with b-and γ-Keto-Esters
	J. Reiter, L. Pongo, H. Molnar, K. Esses-Reiter, P. Vago, P. Sohar, P. Dvortsak, Budapest, H

P 12.59	Synthesis and Antimicrobial Properties of Novel Thiazolines and Thiazolidinones Derived from Pyruvaldehyde di-Hydrazone
	A.-M.M.E. Omar, I. Chaaban, A.M. Mostafa, O.M. Aboul- Wafa, K.A.A. Ismail, H. Abou-Shleib, Alexandria, ET

P 12.60	Synthesis of 6-Arylimino-3-imino-1,2,4,5-dithiadiazines
	V.K. Verma, R. Singh, A.P. Singh, Varanasi, IND

P 12.61	Synthesis of Condensed Thiophenes by Improved Wagner-Meerwein Rearrangements
	H. Fröhlich, F. Sauter, P. Stanetty, Vienna, A

P 12.62	Facile Synthesis of 2-Ethoxycarbamoylazoles by Cyclodesulfurization of Thio-compounds with DCCD
	A.-M. M.E. Omar, O.M. Aboulwafa, Alexandria, ET

P 12.63	Syntheses and Reactions of 3-(α-Hydroxyalkyl)-thiophene-2-carboxamides
	H. Fröhlich, F. Sauter, P. Stanetty, Vienna, A

P 12.64	Thienopyrrolones from N-Alkoxy-thienylglycolamides
	O. Geffken, G. Groll, R. Gleixner, Bonn

P 12.65	Coupling and Cyclization of Sydnone Compound
	H.-J. Tien, Tainan, R China

P 12.66	Reactions with α,b-Unsaturated Acylisothiocyanates
	M.R.H. Elmoghayar, N.A.A. Hamdy, Giza, ET

P 12.67	Reaction of Conjugated Nitriles with Imines
	M. Sakamoto, H. Sekiguchi, Y. Akiyama, Tokyo, J

P 12.68	Synthesis of 3-Azido-6-nitro-meta-hempinate and 5,6-Dimethoxybenzofuroxan by a Novel Aromatic Nucleophilic Substitution Reaction
	S.V. Eswaran, S.K. Sajadian, Delhi, IND

P 12.69	Light-Harvesting Array of Synthetic Porphyrins
	L. R. Milgrom, Kingston upon Thames, J. Davila, A. Harriman, London, GB

P 12.70	Reactions of 1,2,4-Triazinium Salts with Mono- and Bifunctional Nucleophiles
	V.N. Charushin, O.N. Chupakhin, S.G. Alexeev, Sverdlovsk, SU

P 12.71	Nucleophilic Substitutions of Quinolone-borinic-anhydrides
	U. Jordis, F. Sauter, M. Burkart, Vienna, A

P 12.72	Novel One-Step Synthesis of 6-Substituted-3,4-Dihydro-2H-1,3,5-thiadiazin-2-ones and 3-Substituted-2-Oxo-3,4,5,6-tetrahydro-1,3,5-thiadiazino (2,3-b)-3,4-dihydro-quinazolin-4-ones
	A. Vass, G. Szalontai, Veszprém, H

P 12.73	Reaction of Benzofuroxans with Formanilides - A Novel Synthesis of 2-Aryl-benzo-1,2,3-triazole-1-oxides
	H.-J. Niclas, B. Goehrmann, Berlin

P 12.74	Probing the Anomeric Effect. A Systematic Analysis of Structural Properties of the C-O-C-O-C Grouping
	L. Schleifer, P. Aped, H. Senderovitz, E. Tartakovsky, B. Fuchs, Tel-Aviv, IL

P 12.75	Reaction of Methylketene Dimer with Aromatic N-Oxides
	M. Daneshtalab, R.G. Micetich, G.V. Farahani, Edmonton, CDN

P 12.76	Synthesis of Benzo[a]Quinolizines via Methylketene Dimer
	M. Daneshtalab, R.G. Micetich, P. Spevak, S. Forghanifar, Edmonton, CDN

P 12.77	Reactions of Nicotinic Acid-1-oxide Derivatives with Acid Anhydrides
	M. Hamana, H. Nagano, Y. Nawata, Tokyo, J

P 12.78	A Synthesis of New Coupling Reagent Bis (1-Phenyl-1H-tetrazolyl-5-thio)carbonate and its Reactions
	K. Takeda, K. Tsuboyama, H. Takayanagi, H. Ogura, Tokyo, J

P 12.79	A New Rearrangement of a N-Acyl-thiourea
	J. Seres, K. Daroczi-Csuka, K. Simon, I. Szilagyi, Budapest, H

P 12.80	Self-Reproduction of Chirality in C-C Bond Formation via Dipolar Intermediates Generated in situ by [1,5]-Hydrogen Transfer
	W.H.N. Nijhuis, W. Verboom, D.N. Reinhoudt, Enschede, NL

P 12.81	Electrochemical Study of Quinaldinic Acid (Quinoline-2-carboxylic Acid) in Aqueous Sodium Perchlorate Solutions.
	S.B. El-Maraghy, Cairo, ET

P 12.82	Thermal Isomerizations of Aza - and Oxa-benzotricyclooctanes
	J. Kurita, H. Sakai, T. Aruga, T. Tsuchiya, Kanazawa, J

P 12.83	Reactions of Condensed Pyridazines with Some Nucleophiles
	E. Oishi, Sh. Ota, R. Shiozawa, T. Higashino, Shizuoka-shi, J

P 12.84	An Unusual Ring Transformation: Reaction of Phenyl- 4-chromone-3-sulfonate with Methyl-3-amino-crotonate
	W. Löwe, P. Jeske, Berlin

P 12.85	Ring Transformation Methods for the Synthesis of 1,4-Benzothiazines
	L. Fodor, Gyula, J. Saabo, G. Bernath, Szeged, P. Sohar, Budapest, H

P 12.86	A Directed Lithiation Approach to the Synthesis of the Six Atom Chelate Molecule Quino[7,8-h]quinoline
	J. N. Reed, Corner Brook, Newfoundland, CDN

P 12.87	A New Route to 4-Oxygenated b-Carbolines Exemplified by the Total Synthesis of Crenatine
	Y. Murakami, Y. Yokoyama, Ch. Aoki, Ch. Miyagi, T. Watanabe, T. Ohmoto, Chiba, J

P 12.88	A New Synthesis of Pyrazolo[3,4,d]pyrimidines
	S. Vega, I. Alonso, S. Gil, R. Madronero, Madrid, E

P 12.89	A Novel Synthesis of Pyrazolo[4,3-c]pyridazines and Isoxazolo [4,5-c]pyridazines
	M.H. Elnagdi, F.M. Abdel-Galil, E.A. Hafez, Giza, ET

P 12.90	Regioselective Acylation of Nucleosides and Glycosides via 3,3'‑(Chlorophosphoryl)bis-(1,3-oxazolidin-2-one)
	G. Sindona, A. Liguori, N. Uccella, Arcavacata di Rende, I

P 12.91	Synthesis of 3-Phenyl-4-stryrylcoumarins
	B. Ghiya, Nagpur, IND

P 12.92	Mechanistic and Synthetic Aspects of the Photocyclization of Imides and Oxo-amides
	P. Berci Filho, O. Santos, M.J. Patiti, V.G. Toscano, Sao Paulo, BR

P 12.93	An Effective, General Synthesis of 6-Substituted Pteridines
	E.C. Taylor, P.S. Ray, Princeton, NJ, USA

	Last Minute Posters

LMP 38	Synthesis and Reactivity of 2,5-Dihydro-1H-1,2,5-phosphadiborole and 1,2,3,6-Tetrahydro-1,2,3,6-diphosphadiborin Derivates
	W. Siebert, M. Drieß, H. Pritzkow, Heidelberg

LMP 39	α-Chlorocyclopropylidenacetate: A Versatile Building Block for Spirocyclopropane Annelated Heterocyclic Systems
	A. de Meijere, D. Yu, S. Teichmann, Hamburg

LMP 40	N,N'-Disubstituted bis-Diaza-Crown Ethers
	G. Cai, Y.-W. Zhang, C.-Z. Cai, P. Liu, Guangzhou, PR of China

LMP 41	A Novel Synthesis of N-[4'-(Ethoxycarbonyl)phenyl]-3-pyrrolidinol
	D.J. Robke, R.J. Kempton, Highland Heights, Kentucky, E.C. Taylor, Princeton, NJ, USA

LMP 42	Regioselective Attack of b-Diketonates at N-Carbenio-pyridinium salts: Is Electron Transfer Involved?
	G. Maas, H.-M. Weber, B. Feith, Kaiserslautern

LMP 43	Stereoselectivity of 1,3-Dipolar Cycloadditions of 3,4-Dihydro-6,7-dimethoxyisoquinolinium Methylide with Azomethine Type Dipolarophiles
	G. Tóth, Z. Bende, T. Tischer, F. Janke, I. Kádas, L. Töke, Budapest, H

LMP 44	The Mechanism of Bischler Reaction of Urethanes. A useful Synthetic Method for Lactam Type Alkaloids
	G. Tóth, I. Kádas, B. Bertók, V. Morvai-Kádas, A. Szöllösy, T. Müller, L. Töke, Budapest, H

LMP 45	Photochemical Ring Transformations with Epoxycyclohexenes
	J. Sauer, W. Eberbach, Freiburg

LMP 46	Methyl-3-phenylsulphonylorthproprionate: A Versatile Homoenolate Reagent for Synthesis
	L. Ghosez, J.C. Carretero, S. De Lombaert, I. Nemery, Louvain-La-Neuve, B

LMP 47	The Effects of Heterocyclic Terminal Groups on the Electronic Absorption Spectra of Di- and Tri-phenylmethane Dyes
	S.F. Beach, J.D. Hepworth, D. Mason, Preston, GB

LMP 48	Novel Intramolecular Rearrangement of 1,3-Dipolar Cycloadducts of Nitrones to Alkynes
	A. Liguori, Arcavacata di Rende (CS), R. Ottanà, G. Romero, Messina, G. Sindona, N. Uccella, Arcavata di Rende (CS), I

Friday, August 21

(Building 252, Room A)

8.30 - 9.30 hrs	PL 10	Cobalt-mediated Syntheses of Polyheterocycles
		K.P.C. Vollhardt, Berkeley, CA, USA
		Introduction: V. Snieckus, Waterloo, Canada

9.30 - 10.30 hrs	PL 11	Biosynthesis of Vitamin B₁₂
		A.I. Scott, TX, USA
		Introduction: A. Gossauer, Fribourg, Switzerland

10.30 - 11.00 hrs		Coffee Break

11.00 - 12.00 hrs	PL 12	Heterocycles as Catalytic Groups in Artificial Enzymes
		R. Breslow, New York, NY, USA
		Introduction: E. Vogel, Köln

12.00 hrs		In memoriam V.P. Mamaev, Novosibirsk, SU

		Closing Remarks

P 7.57

P 7.58

P 7.59

P 7.60

P 7.61

P 7.66

P 7.69

P 7.70

P 7.71

P 7.75

P 7.77

P 7.82

P 7.84

P 7.89

P 7.90

P 7.93

P 8.3

P 8.5

P 9.1

Last Minute Posters

LMP 20

LMP 21

LMP 23

LMP 26

LMP 32

LMP 34

P 10.6

P 11.3

P 11.4

P 11.6

P 11.7

P 12.1

P 12.2

P 12.3

P 12.4

P 12.5

P 12.6

P 12.7

P 12.9

P 12.12

P 12.14

P 12.15

P 12.18

P 12.20

P 12.26

P 12.27

P 12.31

P 12.32

P 12.33

P 12.34

P 12.36

P 12.38

P 12.40

P 12.42

P 12.44

P 12.46

P 12.49

P 12.52

P 12.53

P 12.55

P 12.60

P 12.61

P 12.64

P 12.65

P 12.66

P 12.67

P 12.68

P 12.69

P 12.70

P 12.71

P 12.74

P 12.75

P 12.76

P 12.82