POCl<sub>3</sub>-mediated synthesis of 2-substituted benzimidazolyl-coumarin, benzimidazolyl-indole, and styrylbenzimidazole derivatives
作者:Veerendra Kumar A. Kalalbandi、J. Seetharamappa
DOI:10.1080/00397911.2016.1160412
日期:2016.4.2
ABSTRACT 2-Substituted benzimidazolyl heterocycles and styrylbenzimidazoles have been synthesized by the reaction of substituted o-phenylenediamine with different heterocyclic carboxylic acids and cinnamic acid respectively in the presence of POCl3 as a solvent and catalyst. The proposed reaction has advantageous features of good yields, short reaction times, and operational simplicity. In addition
A new compound library that contained 20 hinged benzimidazole coumarin hybrids and their beta-D-ribofuranosides was established. The anti-hepatitis C virus (HCV) activity of all novel coumarin derivatives, which were obtained by use of organic synthetic methods, was tested. Two of these hybrids exhibited appealing EC50 values of as low as 3.0 and 5.5 mu M. The best selectivity index was 14. The incorporation of a D-ribofuranose into the hinged hybrids provided the corresponding nucleosides with the beta configuration, one of which inhibited HCV replication with an EC50 value of 20 mu M. Additionally, the structure activity relationship is elucidated on the basis of the functional groups that were attached to the nuclei of benzimidazole, coumarin, and ribofuranose of the hybrids. (C) 2013 Elsevier Masson SAS. All rights reserved.
Sarpeshkar,A.M.; Rajagopal,S., Indian Journal of Chemistry, 1975, vol. 13, p. 1368 - 1369
作者:Sarpeshkar,A.M.、Rajagopal,S.
DOI:——
日期:——
SARPESHKAR A. M.; RAJAGOPAL S., INDIAN J. CHEM. <IJOC-AP>, 1975, 13, NO 12, 1368-1369