Synthesis and structure–activity relationships of pyridinyl-1H-1,2,3-triazolyldihydroisoxazoles as potent inhibitors of tubulin polymerization
作者:P. Suman、T. Ramalinga Murthy、K. Rajkumar、D. Srikanth、Ch. Dayakar、Chandan Kishor、Anthony Addlagatta、Shasi V. Kalivendi、B. China Raju
DOI:10.1016/j.ejmech.2014.11.063
日期:2015.1
Three series of compounds; pyridinyl-1H-1,2,3-triazoles, pyridinyl-1H-1,2,3-triazolylisoxazoles and pyridinyl-1H-1,2,3-triazolyldihydroisoxazoles with TMP moiety were designed, synthesized and screened for their anti-cancer and anti-tubulin properties. By sequentially designing three series of compounds comprising of dihydroisoxazole in the linker, a small substituent like chlorine on one side (R-1) and aromatic group (R) on the pyridine ring, we have optimized the anti-cancer as well as anti-tubulin activity. Pyridinyl-1H-1,2,3-triazolyldihydroisoxazoles 28b and 28c were found to be potent anti-cancer agents against all the cell lines tested with a concomitant accumulation of cells in the G2/M phase of the cell cycle. Molecular modeling suggests that the trimethoxyphenyl ring in 28b and 28c occupies the cholchicine binding domain of beta-tubulin, whereas, the dihydroisoxazole extends towards the interface of alpha,beta-tubulin. (C) 2014 Elsevier Masson SAS. All rights reserved.