申请人:Cieslinski Witold Stanislaw
公开号:US20120071674A1
公开(公告)日:2012-03-22
The present invention provides solvates of 4-acetoxy-2α-benzoyloxy-5β,20-epoxy-1,7β,10β-trihydroxy-9-oxo-tax-11-en-13α-yl (2R,3S)-3-tert-butoxycarbonylamino-2-hydroxy-3-phenylpropionate and C2-3-alkyl esters of formic acid, process of their preparation and their use in the synthesis of the pharmaceutically pure 4-acetoxy-2α-benzoyloxy-5β,20-epoxy-1,7β,10β-trihydroxy-9-oxo-tax-11-en-13α-yl (2R,3S)-3-tert-butoxycarbonylamino-2-hydroxy-3-phenylpropionate.
本发明提供了4-乙酰氧基-2α-苯甲酰氧基-5β,20-环氧-1,7β,10β-三羟基-9-酮基-紫杉醇-11-烯-13α-基(2R,3S)-3-叔丁氧羰基氨基-2-羟基-3-苯基丙酸的溶剂结晶体及甲酸C2-3-烷基酯,其制备方法以及它们在合成药用纯度的4-乙酰氧基-2α-苯甲酰氧基-5β,20-环氧-1,7β,10β-三羟基-9-酮基-紫杉醇-11-烯-13α-基(2R,3S)-3-叔丁氧羰基氨基-2-羟基-3-苯基丙酸中的应用。