Discovery of pyrazolo[1,5-a]pyridines as p110α-selective PI3 kinase inhibitors
摘要:
We have made a novel series of pyrazolo[1,5-a]pyridines as PI3 kinase inhibitors, and demonstrated their selectivity for the p110 alpha isoform over the other Class Ia PI3 kinases. We investigated the SAR around the pyrazolo[1,5-a] pyridine ring system, and found compound 5x to be a particularly potent example (p110 alpha IC50 0.9 nM). This compound inhibits cell proliferation and phosphorylation of Akt/PKB, a downstream marker of PI3 kinase activity, and showed in vivo activity in an HCT-116 human xenograft model. (C) 2011 Elsevier Ltd. All rights reserved.
Benzimidazolone as potent chymase inhibitor: Modulation of reactive metabolite formation in the hydrophobic (P1) region
作者:Ho Yin Lo、Peter A. Nemoto、Jin Mi Kim、Ming-Hong Hao、Kevin C. Qian、Neil A. Farrow、Daniel R. Albaugh、Danielle M. Fowler、Richard D. Schneiderman、E. Michael August、Leslie Martin、Melissa Hill-Drzewi、Steven S. Pullen、Hidenori Takahashi、Stéphane De Lombaert
DOI:10.1016/j.bmcl.2011.05.126
日期:2011.8
A new class of chymase inhibitor featuring a benzimidazolone core with an acid side chain and a P-1 hydrophobic moiety is described. Incubation of the lead compound with GSH resulted in the formation of a GSH conjugate on the benzothiophene P-1 moiety. Replacement of the benzothiophene with different heterocyclic systems such as indoles and benzoisothiazole is feasible. Among the P-1 replacements, benzoisothiazole prevents the formation of GSH conjugate and an in silico analysis of oxidative potentials agreed with the experimental outcome. (C) 2011 Elsevier Ltd. All rights reserved.