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    • 7. 发明申请
    • ZOPICLONE RESOLUTION USING L-TARTARIC ACID
    • 使用L-三酸的ZOPICLONE分辨率
    • WO2007088073A1
    • 2007-08-09
    • PCT/EP2007/000985
    • 2007-02-02
    • SYNTHON B.V.ZHU, Jie
    • ZHU, Jie
    • C07D487/04
    • C07D487/04
    • The invention relates to an S-zopiclone-L-tartrate compound, to a process, which comprises reacting a mixture of R- and S-zopiclone and/or a salt thereof with L-tartaric acid in a solvent to form a solution containing zopiclone ions and L-tartaric acid ions, to a process for increasing the enantiomeric purity of S-zopiclone, which comprises: (a) selectively precipitating from a solution, which contains zopiclone and tartaric acid as solutes and acetonitrile as a solvent, an S-zopiclone-L-tartrate acetonitrile solvate; and (b) treating said S-zopiclone-L-tartrate acetonitrile solvate with a base to form enriched S-zopiclone and to the use of L-tartaric acid in the making of enriched S-zopiclone and/or its L-tartrate compound.
    • 本发明涉及S-佐匹克隆-L-酒石酸盐化合物,该方法包括将R-和S-佐匹克隆和/或其盐与L-酒石酸的混合物在溶剂中反应以形成含有佐匹克隆的溶液 离子和L-酒石酸离子,用于提高S-佐匹克隆的对映异构体纯度的方法,其包括:(a)从包含佐匹克隆和酒石酸的溶液中以溶剂和乙腈作为溶剂选择性沉淀, 佐匹克隆L-酒石酸乙酯溶剂合物; 和(b)用碱处理所述S-佐匹克隆-L-酒石酸乙酯溶剂化物以形成富集的S-佐匹克隆,以及使用L-酒石酸制备富集的S-佐匹克隆和/或其L-酒石酸盐化合物。