申请人:Zambon Group S.p.A.
公开号:US05362871A1
公开(公告)日:1994-11-08
A process for the direct and regioselective functionalization of phenothiazine which allows one to introduce an SH group in position 2, said process comprising the sulfination or sulfonation of the phenothiazine N-protected with an alkoxycarbonyl, an alkylsulfonyl or an arylsulfonyl group, the reduction of the produce obtained to give the N-protected 2-mercapto-phenothiazine, and the deprotection of the nitrogen atom. The thus-obtained 2-mercapto-phenothiazine is an important intermediate for the preparation of pharmacological active compounds.
一种用于对苯并噻嗪进行直接和区域选择性官能化的方法,可以在位置2引入一个SH基团,该方法包括对用烷氧羰基、烷基磺酰基或芳基磺酰基保护的苯并噻嗪进行磺化或磺化反应,将所得产物还原以得到保护的2-巯基苯并噻嗪,然后对氮原子进行去保护。因此得到的2-巯基苯并噻嗪是制备药理活性化合物的重要中间体。