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Precipitation or solution diastereomerically enriched with a suflonate salt of tamsulosin, obtained by a process by dissolving tamsulosin and compounds which bind thereto
Precipitation or solution diastereomerically enriched with a suflonate salt of tamsulosin, obtained by a process by dissolving tamsulosin and compounds which bind thereto
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机译:坦索罗辛的亚磺酸盐的非对映异构体富集沉淀或溶液,其通过将坦索罗辛及其结合的化合物溶解而制得
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摘要
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.
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