Imidazole as organocatalyst for multicomponent reactions: diversity oriented synthesis of functionalized hetero- and carbocycles using in situ-generated benzylidenemalononitrile derivatives
作者:Md. Nasim Khan、Suman Pal、Shaik Karamthulla、Lokman H. Choudhury
DOI:10.1039/c3ra45252b
日期:——
The multicomponent reaction of malononitrile, aldehyde and a third reaction partner such as naphthol/4-hydroxycoumarine/2-hydroxynaphthoquinone/kojic acid/enolizable ketone or thiol in the presence of imidazole as an organocatalyst provides very interesting molecular diversity. In an almost neutral reaction medium, this protocol provides easy access to highly functionalized 2-amino-4H-chromenes, dienes and 2-amino pyridines using in situ-generated aryl/alkylylidenemalononitrile derivatives obtained from the reaction of aldehydes and malononitrile along with various nucleophiles under reflux conditions in ethanol. This methodology is useful for the easy access of a wide range of structurally diverse functionalized molecules having potential application in biological systems.
Aliphatic aldehydes in the synthesis of condensed 4-alkyl(cycloalkyl)-2-amino-3-cyano-4H-pyrans
作者:G. V. Klokol、S. G. Krivokolysko、V. D. Dyachenko、V. P. Litvinov
DOI:10.1007/bf02323376
日期:1999.10
An efficient multicomponent synthesis and <i>in vitro</i> anticancer activity of dihydropyranochromene and chromenopyrimidine-2,5-diones
作者:M. R. Bhosle、D. B. Wahul、G. M. Bondle、A. Sarkate、S. V. Tiwari
DOI:10.1080/00397911.2018.1480042
日期:2018.8.18
Of these compounds, 4d was found to be the most potent inhibitors of HeLa and MCF-7 demonstrating IC50 values of 19 µM and 7 µM. Compounds 4b, 4e and 4f also shown significantly good in vitroanticanceractivity against HeLa and MCF-7 cancer cell lines. Graphical Abstract