Orally bioavailable HCV NS5A inhibitors of unsymmetrical structural class
摘要:
A novel unsymmetrical structural class of orally bioavailable hepatitis C virus (HCV) nonstructural 5A protein (NS5A) inhibitors has been generated by improving both the solubility and membrane permeability of the lead compound found in our previous work. The representative compound 14, with a 5-hydroxymethylpyrazine group and a 3-t-butylpropargyl group on each side of the molecule, exhibited the best oral bioavailability in this study, inhibiting not only the HCV genotype 1a, 1b, 2a, and 3a replicons with EC50 values in the picomolar range, but also inhibited 1a Q30 mutants induced by launched symmetrical inhibitors with EC50 values in the low nanomolar range.
[EN] 3,4,6,7-TETRAHYDRO-1H-PYRROLO[3,4-D]PYRIMIDINE-2,5-DIONES AND THEIR THERAPEUTIC USE [FR] 3,4,6,7-TÉTRAHYDRO-1H-PYRROLO[3,4-D]PYRIMIDINE-2,5-DIONES ET LEUR UTILISATION THÉRAPEUTIQUE
Novel Inhibitors of the MDM2-p53 Interaction Featuring Hydrogen Bond Acceptors as Carboxylic Acid Isosteres
作者:Ana Z. Gonzalez、Zhihong Li、Hilary P. Beck、Jude Canon、Ada Chen、David Chow、Jason Duquette、John Eksterowicz、Brian M. Fox、Jiasheng Fu、Xin Huang、Jonathan Houze、Lixia Jin、Yihong Li、Yun Ling、Mei-Chu Lo、Alexander M. Long、Lawrence R. McGee、Joel McIntosh、Jonathan D. Oliner、Tao Osgood、Yosup Rew、Anne Y. Saiki、Paul Shaffer、Sarah Wortman、Peter Yakowec、Xuelei Yan、Qiuping Ye、Dongyin Yu、Xiaoning Zhao、Jing Zhou、Steven H. Olson、Daqing Sun、Julio C. Medina
DOI:10.1021/jm401911v
日期:2014.4.10
We previously reported the discovery of potent and selective morpholinone and piperidinone inhibitors of the MDM2-p53 interaction. These inhibitors have in common a carboxylic acid moiety that engages in an electrostatic interaction with MDM2-His96. Our continued search for potent and diverse inhibitors led to the discovery of novel replacements for these acids uncovering new interactions with the MDM2 protein. In particular, using pyridine or thiazole as isosteres of the carboxylic acid moiety resulted in very potent analogues. From these, AM-6761 (4) emerged as a potent inhibitor with remarkable biochemical (HTRF IC50 = 0.1 nM) and cellular potency (SJSA-1 EdU IC50 = 16 nM), as well as favorable pharmacokinetic properties. Compound 4 also shows excellent antitumor activity in the SJSA-1 osteosarcoma xenograft model with an ED50 of 11 mg/kg. Optimization efforts toward the discovery of these inhibitors as well as the new interactions observed with the MDM2 protein are described herein.