PROCEDE D'EXTRACTION ET DE SEPARATION DE GINKGOLIDES

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专利权人:

CHENGDU BAIYU TECHNOLOGY PHARMACY CO.; LTD

发明人:

SUN, YI,ZHU, YONGHONG,TONG, ZHENGBING,WANG, JIE

申请号：

CA2871146

公开号：

CA2871146C

申请日:

2012.05.17

申请国别(地区):

CA

年份:

2016

代理人:

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 (C15H18O8), 20.0% to 45.0% of ginkgolide A (C20H24O9), 10.0% to 30.0% of ginkgolide B (C20H24O10), and 5.0% to 15.0% of ginkgolide C (C20H24O11). The total quantity of the bilobalide, the ginkgolide A, the ginkgolide B, and the ginkgolide C is over 95%.

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