An efficient and convenient synthesis of 3,5-diphenyl-IH-pyrazoles from chalcones by the action of hydrazine hydrate on chalcone-epoxide followed by simultaneous dehydration is reported.
Synthesis and biological evaluation of chalcones and their derived pyrazoles as potential cytotoxic agents
摘要:
A series of substituted chalcones and their corresponding pyrazoles were synthesized and evaluated for in vitro cytotoxic activity against a panel of human cancer cell lines. Out of 93 compounds screened, 8 compounds, 1s, 3i,j,n, 4i,j,n and 4s, showed marked activity. Compounds 4j,n and 4s were found to be the most promising in this study. SAR is also discussed. (c) 2005 Elsevier Ltd. All rights reserved.