Synthesis of Novel Tricyclic Pyrimido[4,5-<i>b</i>][1,4]benzothiazepines via Bischler−Napieralski-Type Reactions
作者:Renzhong Fu、Xianxiu Xu、Qun Dang、Xu Bai
DOI:10.1021/jo051873k
日期:2005.12.1
Novel tricyclic pyrimido[4,5-b][1,4]benzothiazepines were readily prepared from 5-amino-4,6-bis(arylthio)pyrimidines and carboxylic acids via Bischler−Napieralski-type reactions. The 6-aryl sulfide group of the resulting pyrimido[4,5-b][1,4]benzothiazepines could be selectively oxidized to its corresponding sulfoxide, which underwent facile substitution reactions when treated with nucleophiles such
新型三环嘧啶并[4,5- b ] [1,4]苯并硫氮杂s很容易通过Bischler-Napieralski型反应从5-氨基-4,6-双(芳硫基)嘧啶和羧酸制备。所得嘧啶并[4,5- b ] [1,4]苯并硫氮杂s的6-芳基硫醚基团可以选择性地氧化成其相应的亚砜,当用亲核试剂(如胺)处理时,该亚砜容易发生取代反应。这种合成策略提供了一种有效的方法来访问在药物开发中感兴趣的新型杂环化合物的库。