A simple and expedient method for the preparation of N-chlorohydantoins
摘要:
A simple and efficient methodology for the preparation of N-chlorinated hydantoins is presented. These versatile chlorenium sources were isolated in high yield after a simple recrystaillization. Among the ten examples are the first chiral N-chlorohydantoins. (C) 2008 Elsevier Ltd. All rights reserved.
报道了通过烯烃氯官能化进行动力学拆分的第一个例子。发现外消旋不饱和酰胺的对映异构体在多种溶剂中对手性路易斯碱具有不同的氢键亲合力。这种相互作用被用于通过卤环化开发外消旋不饱和酰胺的动力学拆分。相同的催化剂既可以在基材中“感知手性”,又可以将高度选择性的氯传递到烯烃官能团上,从而产生高达 99:1 dr 和高达 98.5:1.5 er 的立体三元组产物。选择性因子通常大于 50,以允许以接近 50% 的产率同时合成高度对映体富集形式的产物和未反应的底物。该反应使用催化量(≤0.
[EN] ALKYNYL DIHYDROQUINOLINE SULFONAMIDE COMPOUNDS<br/>[FR] COMPOSÉS SULFONAMIDES DE DIHYDROQUINOLINE D'ALCYNYLE
申请人:AMGEN INC
公开号:WO2017106872A1
公开(公告)日:2017-06-22
The present invention provides compounds of Formula I, and pharmaceutically acceptable salts thereof, that are inhibitors of voltage-gated sodium channels, in particular Nav1.7. The compounds are useful for the treatment of diseases associated with the activity of sodium channels such as pain disorders, cough, and itch. Also provided are pharmaceutical compositions containing compounds of the present invention.