Synthesis of Novel Benzimidazolyl-substituted Acrylonitriles and Amidino-substituted Benzimidazo[1,2-a]Quinolines
作者:Marijana Hranjec、Grace Karminski-Zamola
DOI:10.3390/12081817
日期:——
A series of novel benzimidazole derivatives 3-10 were synthesized. Benzimidazolyl-substituted acrylonitriles 3 and 4 underwent a photochemical dehydrocyclization reaction to give the corresponding mono- and dicyano-substituted benzimidazo[1,2-a] quinolines 5 and 6. Pinner reaction of these compounds did not give the expected mono- and diamidines, but rather only compounds 7-10, with amido groups at 6-position were isolated. A mechanism for the reaction is proposed. Acyclic compounds 3 and 4, as well as cyclic benzimidazo[1,2-a]quinolines 5-8, exhibit interesting spectroscopic properties and are potential biologically active compounds.
Synthesis, X-ray Crystal Structures, Stabilities, and in Vitro Cytotoxic Activities of New Heteroarylacrylonitriles
作者:Franciszek Sa̧czewski、Przemyslaw Reszka、Maria Gdaniec、Renate Grünert、Patrick J. Bednarski
DOI:10.1021/jm0311036
日期:2004.6.1
that position 2 is flexible for substituents with various nitrogen heterocyclics while position 3 is very sensitive to change; the most potent compounds contained a 5-nitrothiophen-2-yl ring at position 3 and either benzimidazol-2-yl (11) or a 5-benzyl-1H-[1,2,4]-triazol-3-yl (7) group at position 2 of acrylonitrile. SARs for the thiophen-2-yl-benzimidazoles show the following trend for position 5: NO2
Different positions of amide side chains on the benzimidazo[1,2-<i>a</i>]quinoline skeleton strongly influence biological activity
作者:Nataša Perin、Jasna Alić、Sandra Liekens、Arthur Van Aerschot、Peter Vervaeke、Bharat Gadakh、Marijana Hranjec
DOI:10.1039/c8nj00416a
日期:——
2-a]quinolines substituted with amide chains have been evaluated for their antiproliferative, antibacterial and antiviral activity in vitro. Amido-substituted cyclic derivatives were synthesized by classical organic synthetic reactions in order to study the influence of the type and length of the amide side chain as well as its position on the tetracyclic skeleton on biological activity. The most promising