Invention Grant
US06713639B1 Process for preparing enantiomerically pure (S)-3-hydroxy-gamma-butyrolactone
失效
制备对映体纯（S）-3-羟基-γ-丁内酯的方法
- Patent Title: Process for preparing enantiomerically pure (S)-3-hydroxy-gamma-butyrolactone
- Patent Title (中): 制备对映体纯（S）-3-羟基-γ-丁内酯的方法
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Application No.: US10281615Application Date: 2002-10-28
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Publication No.: US06713639B1Publication Date: 2004-03-30
- Inventor: Mukund Keshao Gurjar , Pradeep Kumar , Anis Naim Deshmukh , Rajesh Kumar Upadhyay , Puspesh Kumar Upadhyay
- Applicant: Mukund Keshao Gurjar , Pradeep Kumar , Anis Naim Deshmukh , Rajesh Kumar Upadhyay , Puspesh Kumar Upadhyay
- Main IPC: C07D30720
- IPC: C07D30720
Abstract:
The present invention relates to a process for the in situ preparation of optically pure (S)-3,4-dihydroxybutyric acid derivatives represented by the Formula [2] and more particularly, to a process which enables preparing optically pure (S)-3-hydroxy-&ggr;-butyrolactone represented by Formula [1] by oxidation of &agr;- or &bgr;-(1,4) linked disaccharide or oligosaccharide with an oxidant under basic condition to give acid and cyclization sequentially under acidic condition to give (S)-3-hydroxy-&ggr;-butyrolactone.
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