Process for resolution of tamsulosin and compounds, compositons, and processes associated therewith
申请人:——
公开号:US20030109752A1
公开(公告)日:2003-06-12
Optically impure tamsulosin including racemic tamsulosin can be resolved into optically pure (R)- or (S)-tamsulosin by the use of diastereomeric sulfonate salts of tamsulosin in a fractional crystallization technique. Racemic tamsulosin free base is a useful starting material for the resolution process and a method of obtaining the same in solid form, including two crystalline polymorphic forms, is also provided.
包括消旋盐酸坦洛新在内的光学不纯的坦洛新可以通过使用坦洛新的对映异构磺酸盐在分馏结晶技术中分离成光学纯的(R)-或(S)-坦洛新。消旋盐酸坦洛新游离碱是分离过程的有用起始物质,同时还提供了一种获得固体形式的方法,包括两种晶态多型形式。