One-pot synthesis and anticancer studies of 2-arylamino-5-aryl-1,3,4-thiadiazoles
作者:Dalip Kumar、Buchi Reddy Vaddula、Kuei-Hua Chang、Kavita Shah
DOI:10.1016/j.bmcl.2011.02.083
日期:2011.4
A series of 2-arylamino-5-aryl-1,3,4-thiadiazoles 1a-j were synthesized and screened for their anticancer activity against various human cancer cell lines. The novel one-pot synthesis of 1,3,4-thiadiazoles was achieved by refluxing aryl aldehydes, hydrazine hydrate, and aryl isothiocyanates in methanol followed by oxidative cyclization with ferric ammonium sulfate. The compounds 1g-j with trimethoxyphenyl at the C-5 position displayed extremely potent anticancer activity with at least twofold selectivity (IC(50): 4.3-9.2 mu M). The nature of substituent on the C-2 arylamino ring may be critical in opting for the selectivity towards a particular cancer cell. (C) 2011 Elsevier Ltd. All rights reserved.