Discovery and Optimization of a Series of Benzothiazole Phosphoinositide 3-Kinase (PI3K)/Mammalian Target of Rapamycin (mTOR) Dual Inhibitors
作者:Noel D. D’Angelo、Tae-Seong Kim、Kristin Andrews、Shon K. Booker、Sean Caenepeel、Kui Chen、Derin D’Amico、Dan Freeman、Jian Jiang、Longbin Liu、John D. McCarter、Tisha San Miguel、Erin L. Mullady、Michael Schrag、Raju Subramanian、Jin Tang、Robert C. Wahl、Ling Wang、Douglas A. Whittington、Tian Wu、Ning Xi、Yang Xu、Peter Yakowec、Kevin Yang、Leeanne P. Zalameda、Nancy Zhang、Paul Hughes、Mark H. Norman
DOI:10.1021/jm1014605
日期:2011.3.24
Phosphoinositide 3-kinase alpha (Pi3K alpha) is a lipid kinase that plays a key regulatory role in several cellular processes. The mutation or amplification of this kinase in humans has been implicated in the growth of multiple tumor types. Consequently, PI3K alpha has become a target of intense research for drug discovery. Our studies began with the identification of benzothiazole compound 1 from a high throughput screen. Extensive SAR studies led to the discovery of sulfonamide 45 as an early lead, based on its in vitro cellular potency. Subsequent modifications of the central pyrimidine ring dramatically improved enzyme and cellular potency and led to the identification of chloropyridine 70. Further arylsulfonamide SAR studies optimized in vitro clearance and led to the identification of 82 as a potent dual inhibitor of PI3K and mTOR This molecule exhibited potent enzyme and cell activity, low clearance, and high oral bioavailability. In addition, compound 82 demonstrated tumor growth inhibition in U-87 MG, A549, and HCT116 tumor xenograft models.
Discovery of a Novel Series of 7-Azaindole Scaffold Derivatives as PI3K Inhibitors with Potent Activity
inhibitors potently inhibit the signaling pathway of PI3K/AKT/mTOR, which provides a promising new approach for the molecularly targeted cancer therapy. In this work, a novel series of 7-azaindole scaffold derivatives was discovered by the fragment-based growing strategy. The structure–activity relationship profiles identified that the 7-azaindole scaffold derivatives exhibit potentactivity against PI3K