3-Amino-benzo[<i>d</i>]isoxazoles as Novel Multitargeted Inhibitors of Receptor Tyrosine Kinases
作者:Zhiqin Ji、Asma A. Ahmed、Daniel H. Albert、Jennifer J. Bouska、Peter F. Bousquet、George, A. Cunha、Gilbert Diaz、Keith B. Glaser、Jun Guo、Christopher M. Harris、Junling Li、Patrick A. Marcotte、Maria D. Moskey、Tetsuro Oie、Lori Pease、Nirupama B. Soni、Kent D. Stewart、Steven K. Davidsen、Michael R. Michaelides
DOI:10.1021/jm701096v
日期:2008.3.13
A series of benzoisoxazoles and benzoisothiazoles have been synthesized and evaluated as inhibitors of receptor tyrosine kinases (RTKs). Structure-activity relationship studies led to the identification of 3-amino benzo[d]isoxazoles, incorporating a N,N'-diphenyl urea moiety of the 4-position that potently inhibited both the vascular endothelial growth factor receptor (VEGFR) and platelet-derived growth factor receptor families of RTKs. Within this series, orally bioavailable compounds possessing promising pharmacokinetic profiles were identified, and a number of compounds demonstrated in vivo efficacy in models of VEGF-stimulated vascular permeability and tumor growth. In particular, compound 50 exhibited an ED50 of 2.0 mg/kg in the VEGF-stimulated uterine edema model and 81% inhibition in the human fibrosarcoma (HT1080) tumor growth model when given orally at a dose of 10 mg/kg/day.