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- Publications
- Influence
Berberine and coptisine free bases
Abstract The free bases of protoberberine alkaloids berberine and coptisine and related compounds have been examined. The 1H and 13C NMR data of 8-hydroxy-7,8-dihydroberberine (2a),… Expand
Synthesis of the anti-HIV agent (-)-hyperolactone C by using oxonium ylide formation-rearrangement.
- D. Hodgson, S. Man
- Chemistry, Medicine
- Chemistry
- 22 August 2011
Starting from readily available (S)-styrene oxide an asymmetric synthesis is described of the naturally occurring anti-HIV spirolactone (-)-hyperolactone C, which possesses adjacent fully substituted… Expand
Fused Tetracyclic Heterocycles by Thermally Initiated Intramolecular Criss-Cross Cycloaddition of 3-Substituted Homoallenylaldazines
- Hana Zachová, S. Man, M. Nečas, M. Potáček
- Chemistry
- 1 June 2005
A thermally initiated intramolecular criss-cross cycloaddition
of 3-substituted symmetrical homoallenyl azines (5) was
searched. Their cyclization led to interesting new fused
heterocyclic systems… Expand
Molecular and Crystal Structures of Three Berberine Derivatives
- S. Man, M. Potáček, M. Nečas, Z. Ẑák, J. Dostal
- Chemistry
- Molecules : A Journal of Synthetic Chemistry and…
- 30 April 2001
Berberine azide, berberine thiocyanate, and 8-cyano-8H-berberine were prepared from berberine chloride, a quaternary protoberberine alkaloid. The molecular and crystal structures of all compounds are… Expand
Rearrangement of fused tetracyclic heterocycles induced by alkyl halides and formation of a new type of ‘proton sponge’
- Hana Zachová, S. Man, J. Taraba, M. Potáček
- Chemistry
- 24 January 2009
Abstract Intramolecular criss-cross cycloaddition of 3-substituted symmetrical homoallenyl azines 2 by heating in xylene lead to interesting fused heterocyclic systems consisting of four… Expand
The Synthesis of Two Regioisomeric Aldehydes with a Tetrahydrobenzo[b]thiophene Scaffold and Their Application in Solvent-Free Intramolecular 1,3-Dipolar Cycloaddition Reactions
- Lukáš Tenora, S. Man, E. V. D. Berge, M. Potáček
- Chemistry
- 26 April 2016
The paper describes the synthesis of two regioisomeric 2-amino-3-formyl- and 3-amino-2-formyl-substituted derivatives of tetrahydrobenzo[ b ]thiophene and their subsequent thermally initiated… Expand
A new and facile synthesis of methyl 3-amino-4,5,6,7-tetrahydrobenzo[b]thiophene-2-carboxylate
- Lukáš Tenora, Marian Buchlovič, S. Man, M. Potáček
- Chemistry
- 19 January 2011
A four-step synthesis of methyl 3-amino-4,5,6,7-tetrahydrobenzo[b]thiophene-2-carboxylate from commercially available starting materials is presented.
Unexpected Heterocyclic Products from Cycloaddition Reactions of Nonsymmetrical Allenyl Aldoketazines with Substituted Alkynes
- J. Galeta, S. Man, Jean-Philippe Bouillon, M. Potáček
- Chemistry
- 2011
Thermally initiated cycloaddition reactions of nonsymmetrical allenyl azines 1 with alkynes or other dipolarophiles usually lead to compounds with three fused, five-membered heterocyclic rings. With… Expand
Dihydropyrrolo[1,2-b]pyrazoles: withasomnine and related compounds
- J. Galeta, Lukáš Tenora, S. Man, M. Potáček
- Chemistry
- 26 August 2013
In the paper we indicate the increasing importance of
derivatives containing a dihydropyrrolo[1,2-b]pyrazole (DPP)
core. We try to show our synthetic approach based on an
improved Kulinkovich method… Expand
Cyclization of β-allenyloximes as a novel method for nitrone preparation
- S. Man, Marian Buchlovič, M. Potáček
- Chemistry
- 25 September 2006
Two different procedures for β-allenyloxime cyclization are described. One leads to substituted 1-hydroxypyrrolidines and the other represents a new route to pyrroline-N-oxides.