1H-Pyrazolo[3,4-b]pyridine inhibitors of cyclin-dependent kinases: highly potent 2,6-Difluorophenacyl analogues
作者:Raj N. Misra、Hai-yun Xiao、David B. Rawlins、Weifang Shan、Kristen A. Kellar、Janet G. Mulheron、John S. Sack、John S. Tokarski、S.David Kimball、Kevin R. Webster
DOI:10.1016/s0960-894x(03)00381-0
日期:2003.7
Structure-activity studies of 1H-pyrazolo[3,4-b]pyridine 1 have resulted in the discovery of potent CDK1/CDK2 selective inhibitor 21h, BMS-265246 (CDK1/cycB IC(50)=6 nM, CDK2/cycE IC(50)=9 nM). The 2,6-difluorophenyl substitution was critical for potent inhibitory activity. A solid state structure of 21j, a close di-fluoro analogue, bound to CDK2 shows the inhibitor resides coincident with the ATP
1H-吡唑并[3,4-b]吡啶1的结构活性研究已发现有效的CDK1 / CDK2选择性抑制剂21h BMS-265246(CDK1 / cycB IC(50)= 6 nM,CDK2 / cycE IC (50)= 9 nM)。2,6-二氟苯基取代对于有效的抑制活性至关重要。与CDK2结合的21j(紧密的二氟类似物)的固态结构表明,该抑制剂与ATP嘌呤结合位点重合,并与蛋白骨架上的Leu83形成重要的H键。