Synthesis, Structure−Activity Relationship, and Biological Studies of Indolocarbazoles as Potent Cyclin D1-CDK4 Inhibitors
作者:Guoxin Zhu、Scott E. Conner、Xun Zhou、Chuan Shih、Tiechao Li、Bryan D. Anderson、Harold B. Brooks、Robert Morris Campbell、Eileen Considine、Jack A. Dempsey、Margaret M. Faul、Cathy Ogg、Bharvin Patel、Richard M. Schultz、Charles D. Spencer、Beverly Teicher、Scott A. Watkins
DOI:10.1021/jm0256169
日期:2003.5.1
Novel substituted indolocarbazoles were synthesized, and their kinase inhibitory capability was evaluated in vitro. 6-Substituted indolocarbazoles 4 were found to be potent and selective D1/CDK4 inhibitors. 4d and 4h exhibited potent and ATP-competitive D1/CDK4 activities with IC50 values of 76 and 42 nM, respectively. Both compounds had high selectivity against the other kinases. These D1/CDK4 inhibitors inhibited tumor cell growth, arrested tumor cells at the G1 phase, and inhibited pRb phosphorylation.