发明名称 |
METHOD FOR EXTRACTING AND SEPARATING GINKGOLIDES |
摘要 |
A method for extracting and separating ginkgolides. The ginkgolides obtained through steps of extraction on a ginkgo leaf, further extraction, column chromatography, crystallization, and crystal mixing comprise 25.0% to 50.0% of bilobalide (C 15 H 18 O 8 ), 20.0% to 45.0% of ginkgolide A (C 20 H 24 O 9 ), 10.0% to 30.0% of ginkgolide B (C 20 H 24 O 10 ), and 5.0% to 15.0% of ginkgolide C (C 20 H 24 O 11 ). The total quantity of the bilobalide, the ginkgolide A, the ginkgolide B, and the ginkgolide C is over 95%. |
申请公布号 |
EP2842957(A4) |
申请公布日期 |
2015.12.16 |
申请号 |
EP20120875595 |
申请日期 |
2012.05.17 |
申请人 |
CHENGDU BAIYU TECHNOLOGY PHARMACY CO., LTD. |
发明人 |
SUN, YI;ZHU, YONGHONG;TONG, ZHENGBING;WANG, JIE |
分类号 |
C07D493/22;A61K31/365;A61P7/02;A61P9/00;A61P25/00;A61P37/00;C07D493/20 |
主分类号 |
C07D493/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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