Invention Grant
US07863273B2 Process for the preparation of an optically active 5H-pyrrolo [3,4-B] pyrazine derivative 有权
制备光学活性的5H-吡咯并[3,4-b]吡嗪衍生物的方法

Process for the preparation of an optically active 5H-pyrrolo [3,4-B] pyrazine derivative
Abstract:
A substantially pure dextrorotatory isomer of zopiclone or a pharmaceutically acceptable salt thereof and crystalline forms thereof are provided. Also provided is a process for its preparation and pharmaceutical compositions containing same.
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