Discovery of Disubstituted Imidazo[4,5-<i>b</i>]pyridines and Purines as Potent TrkA Inhibitors
作者:Tao Wang、Michelle L. Lamb、Michael H. Block、Audrey Molina Davies、Yongxin Han、Ethan Hoffmann、Stephanos Ioannidis、John A. Josey、Zhong-Ying Liu、Paul D. Lyne、Terry MacIntyre、Peter J. Mohr、Charles A. Omer、Tove Sjögren、Kenneth Thress、Bin Wang、Haiyun Wang、Dingwei Yu、Hai-Jun Zhang
DOI:10.1021/ml300074j
日期:2012.9.13
Trk receptor tyrosine kinases have been implicated in cancer and pain. A crystal structure of TrkA with AZ-23 (1a) was obtained, and scaffold hopping resulted in two 5/6-bicyclic series comprising either imidazo[4,5-b]pyridines or purines. Further optimization of these two fusion series led to compounds with subnanomolar potencies against TrkA kinase in cellular assays. Antitumor effects in a TrkA-driven mouse allograft model were demonstrated with compounds 2d and 3a.