1,4-Dihydroindeno[1,2-c]pyrazoles as potent checkpoint kinase 1 inhibitors: Extended exploration on phenyl ring substitutions and preliminary ADME/PK studies
作者:Yunsong Tong、Akiyo Claiborne、Magdalena Pyzytulinska、Zhi-Fu Tao、Kent D. Stewart、Peter Kovar、Zehan Chen、Robert B. Credo、Ran Guan、Philip J. Merta、Haiying Zhang、Jennifer Bouska、Elizabeth A. Everitt、Bernard P. Murry、Dean Hickman、Tim J. Stratton、Jian Wu、Saul H. Rosenberg、Hing L. Sham、Thomas J. Sowin、Nan-horng Lin
DOI:10.1016/j.bmcl.2007.04.055
日期:2007.7
A study on substitutions at the four open positions on the phenyl ring of the 1,4-dihydroindeno[1,2-c]pyrazoles as potent CHK-1 inhibitors is described. Bis-substitution at both the 6- and 7-positions led to inhibitors with IC50 values below 0.3 nM. The compound with the best overall activities (36) was able to potentiate the anti-proliferative effect of doxorubicin in HeLa cells by at least 47-fold. Physicochemical, metabolic, and pharmacokinetic properties of selected inhibitors are also disclosed. (c) 2007 Elsevier Ltd. All rights reserved.