Regioselective Epoxide Ring Opening for the Stereospecific Scale-Up Synthesis of BMS-960, A Potent and Selective Isoxazole-Containing S1P<sub>1</sub> Receptor Agonist
作者:Xiaoping Hou、Huiping Zhang、Bang-Chi Chen、Zhiwei Guo、Amarjit Singh、Animesh Goswami、John L. Gilmore、James E. Sheppeck、Alaric J. Dyckman、Percy H. Carter、Arvind Mathur
DOI:10.1021/acs.oprd.6b00366
日期:2017.2.17
This article presents a stereospecific scale-up synthesis of (S)-1-((S)-2-hydroxy-2-(4-(5-(3-phenyl-4-(trifluoromethyl)isoxazol-5-yl)-1,2,4-oxadiazol-3-yl)phenyl)ethyl)piperidine-3-carboxylic acid (BMS-960), a potent and selective isoxazole-containing S1P1 receptor agonist. The process highlights an enzymatic reduction of α-bromoketone toward the preparation of (S)-bromo alcohol, a key precursor of
本文介绍了(S)-1-((S)-2-羟基-2-(4-(5-(3-苯基-4-(三氟甲基)异恶唑-5-基)- 1,2,4-恶二唑-3-基)苯基)乙基哌啶-3-羧酸(BMS-960),一种有效且选择性的含异恶唑的S1P 1受体激动剂。过程亮点酶促还原α溴代酮的朝向(制备小号) -溴醇,的关键前体(小号)-4-(环氧乙烷-2-基)苄腈。还优化了区域选择性和立体选择性的环氧化物开环反应,并改善了1,2,4-恶二唑的形成,水解和结晶。改进后的过程用于合成BMS-960批次,用于Ames测试和其他毒理学研究。