Process for the direct and regioselective functionalization in position 2 of phenothiazine
申请人:ZAMBON GROUP S.p.A.
公开号:EP0499126B1
公开(公告)日:1997-08-20
US5362871A
申请人:——
公开号:US5362871A
公开(公告)日:1994-11-08
Process for the direct and regioselective functionalization in position
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.