Synthesis, Structure−Activity Relationships, and In Vivo Evaluation of <i>N</i><sup>3</sup>-Phenylpyrazinones as Novel Corticotropin-Releasing Factor-1 (CRF<sub>1</sub>) Receptor Antagonists
作者:Richard A. Hartz、Vijay T. Ahuja、Argyrios G. Arvanitis、Maria Rafalski、Eddy W. Yue、Derek J. Denhart、William D. Schmitz、Jonathan L. Ditta、Jeffrey A. Deskus、Allison B. Brenner、Frank W. Hobbs、Joseph Payne、Snjezana Lelas、Yu-Wen Li、Thaddeus F. Molski、Gail K. Mattson、Yong Peng、Harvey Wong、James E. Grace、Kimberley A. Lentz、Jingfang Qian-Cutrone、Xiaoliang Zhuo、Yue-Zhong Shu、Nicholas J. Lodge、Robert Zaczek、Andrew P. Combs、Richard E. Olson、Joanne J. Bronson、Ronald J. Mattson、John E. Macor
DOI:10.1021/jm900301y
日期:2009.7.23
Evidence suggests that corticotropin-releasingfactor-1 (CRF1) receptorantagonists may offer therapeutic potential for the treatment of diseases associated with elevated levels of CRF such as anxiety and depression. A pyrazinone-based chemotype of CRF1receptorantagonists was discovered. Structure−activity relationship studies led to the identification of numerous potent analogues including 12p,
An Efficient, Direct Bis-ortho-chlorination of 4-(Difluoromethoxy)aniline and Its Application to the Synthesis of BMS-665053, a Potent and Selective Pyrazinone-Containing Corticotropin-Releasing Factor-1 Receptor Antagonist
作者:Jianqing Li、Daniel Smith、Subramaniam Krishnananthan、Richard A. Hartz、Bireshwar Dasgupta、Vijay Ahuja、William D. Schmitz、Joanne J. Bronson、Arvind Mathur、Joel C. Barrish、Bang-Chi Chen
DOI:10.1021/op2003198
日期:2012.1.20
An efficient scale-up synthesis of (S)-5-chloro-1-(1-cyclopropylethyl)-3-(2,6-dichloro-4-(difluoromethoxy)phenylamino)-pyrazin-2(1H)-one, 1 (BMS-665053), is described. This new process features a one-step direct bis-orthochlorination of 4-(difluoromethoxy)aniline with HCl and H2O2, and a palladium-catalyzed coupling of 2,6-dichloro-4-(difluoromethoxy)aniline 2 and (S)-3,5-dichloro-1-(1-cyclopropylethyl)pyrazin-2(1H)-one 3. The process was applied to the preparation of batches of 1 for preclinical toxicology studies.