Preparation of 3-Substituted-1-Isopropyl-1<i>H</i>-pyrazolo[3,4-<i>d</i>]pyrimidin-4-amines as RET Kinase Inhibitors
作者:Peter Dinér、John P. Alao、Johan Söderlund、Per Sunnerhagen、Morten Grøtli
DOI:10.1021/jm3003944
日期:2012.5.24
A series of 3-substituted-1-isopropyl-1H-pyrazolo[3,4-d]pyrimidin-4-amines have been designed, synthesized, and evaluated as RET protein kinase inhibitors. On the basis of docking results, a small library of pyrazolopyrimidine compounds with an extended hydrophobic side arm was synthesized. The most promising of the compounds (7a) displayed efficient inhibition in vitro and good selectivity when tested on a panel of kinases. Furthermore, 7a inhibited GDNF-induced RET phosphorylation of ERK1/2 in MCF-7 breast cancer cells at concentrations as low as 100 nM.