Method for the preparation of solifenacin
OwnerJosef Jirman, Richard Junekinventors
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Abstract
A method of preparing (1S)-(3R)-1-azabicyclo[2.2.2]oct-3-yl 3,4-dihydro-1-phenyl-2(1H)-isoquinoline carboxylate (solifenacin) or its pharmaceutically acceptable salts with high optic purity, wherein the crude solifenacin base is transformed to the hydrogen tartrate, which is then optionally transformed to another pharmaceutically acceptable salt or the base of solifenacin. A crystalline salt of solifenacin hydrogen tartrate.
Claims11
A method for the preparation of (1S)-(3R)-1-azabicyclo[2.2.2]oct-3-yl 3,4-dihydro-1-phenyl-2(1H)-isoquinoline carboxylate (solifenacin) or its pharmaceutically acceptable salts with high optic purity, wherein the crude solifenacin base is converted to the hydrogen tartrate, which is then converted to another pharmaceutically acceptable salt or the base of solifenacin.
A crystalline salt of solifenacin hydrogen tartrate.
Dependencies are inferred from the claim text.