OXAZEPINES AND THIAZEPINES 40* SYNTHESIS OF 4-ARYL-2-(3-CHROMONYL)-2,3-DIHYDRO-1,5-BENZOTHIAZEPINES AND THEIR CONVERSION INTO 3-ACETYL-2,3-DIHYDROBENZOTHIAZOLES
作者:Albert Levai
DOI:10.1515/hc.2002.8.4.375
日期:2002.1
derivatives, a continuous attention is paid to the synthesis of new 2,4-disubstituted 2,3-dihydro-l,5-benzothiazepines. This fact prompted us to continue our study in this field and herein we report on the synthesis of 4-aryl-2-(3-chromonyl)-2,3dihydro-l,5-benzothiazepines and their conversion into 3-acetyl-2,3-dihydrobenzothiazoles. Introduction of a 3-chromonyl group into the benzothiazepine and benzothiazole
4-Aryl-2-(3-chromonyl)-2,3-dihydro-l,5-benzothiazepines 3a-g 已通过 2-aminothiophenol (1) 和 3-(3-oxo-3-arylpropenyl) 的反应合成)chromen4-ones 2a-g 在乙酸存在下的热甲苯中。1,5-Benzothiazepines 3a,b,d,e 已在乙酰化条件下转化为 3-乙酰基-2,3-二氢苯并噻唑 4a,b,d,e。简介 1,5-苯并噻嗪类具有众所周知的生物活性 (1-10),是药物研究中特别重要的含氮和硫杂环化合物。此类苯二氮卓类的合成已在许多实验室进行了研究,并且本发明的程序也已编入几篇评论文章 (11-14)。由于它们易于获得,2,4-二取代的2,3-二氢-1,5-苯并噻嗪类药物受到了相当多的关注。用于其合成的程序主要基于 2-氨基苯硫酚与 α,β-不饱和酮的反应