Practical routes to the triarylsulfonyl chloride intermediate of a β3 adrenergic receptor agonist
作者:Norihiro Ikemoto、Jinchu Liu、Karel M.J Brands、James M McNamara、Paul J Reider
DOI:10.1016/s0040-4020(03)00018-8
日期:2003.2
was an arylthiazolylbenzenesulfonyl chloride. The triaryl segment of this sulfonyl chloride was assembled at the thiazole ring via coupling of α-haloketone and thiobenzamide precursors (Hantzsch synthesis). Three strategies for introducing the para-sulfonyl chloride moiety were developed and evaluated. The sulfonation/chlorination and diazotization/chlorosulfonylation routes were found the most efficient
甲β 3肾上腺素能受体激动剂经汇集合成在高产率和高纯度的多千克规模制备。该合成中的关键中间体是芳基噻唑基苯磺酰氯。该磺酰氯的三芳基链段通过α-卤代酮和硫代苯甲酰胺前体的偶合在噻唑环上组装(Hantzsch合成)。开发和评估了引入对-磺酰氯部分的三种策略。发现磺化/氯化和重氮化/氯磺酰化途径是最有效的。