Abstract
A novel 6-aminopurine scaffold bearing an N9-cis-cyclobutyl moiety was designed using structure-based molecular design based on two known CDK inhibitors, dinaciclib and Cmpd-27. A series of novel 6-aminopurine compounds was prepared for structure–activity relationship (SAR) studies of CDK2 and CDK5 inhibitors. Among the compounds synthesized, compound 8l displayed potent CDK2 and CDK5 inhibitory activities with low nanomolar ranges (IC50=2.1 and 4.8nM, respectively) and showed moderate cytotoxicity in HCT116 colon cancer and MCF7 breast cancer cell lines. Here, we report the synthesis and evaluation of novel 6-aminopurine derivatives and present molecular docking models of compound 81 with CDK2 and CDK5.
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