2-SUBSTITUTED-ETHYNYLTHIAZOLE DERIVATIVES AND USES OF SAME
申请人:Hopper Allen
公开号:US20110092475A1
公开(公告)日:2011-04-21
The present invention provides 2-substituted-ethynylthiazole derivatives of formula (I):
wherein R
1
, R
2
and X are as defined herein, or a pharmaceutically acceptable salt thereof; and pharmaceutical compositions and methods of using same.
Thiazole, 2-phenyl or -alkyl substituted one and benzothiazole are efficiently arylated with arylbromides at the 2- and/or 5-position(s) in the presence of Pd(OAc)2 and a bulky phosphine ligand using Cs2CO3 as base. 2-Phenyl-5-thiazolecarboxanilide undergoes successive diarylation at the 4- and 5-positions accompanied by decarbamoylation.
在Pd(OAc)2和庞大的膦配体存在下,使用Cs 2 CO 3将噻唑,2-苯基或-烷基取代的一个和苯并噻唑在2和/或5位上与芳基溴有效地芳基化作为基础。2-苯基-5-噻唑甲酰苯胺在4-和5-位进行连续二芳基化,并伴随去甲氨酰化反应。