| 发明名称 |
Process for obtaining betulinic acid |
| 摘要 |
The invention relates to an improved process for obtaining highly pure, crystalline betulinic acid from a methanolic extract of ground plane tree cortex and/or plane tree bark, as well as highly pure crystalline betulinic acid which is solvated with one equivalent of ethanol.
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| 申请公布号 |
US2003149286(A1) |
申请公布日期 |
2003.08.07 |
| 申请号 |
US20030355806 |
申请日期 |
2003.01.31 |
| 申请人 |
BOEHRINGER INGELHEIM PHARMA GMBH & CO. KG |
发明人 |
SAUTER MARKUS |
| 分类号 |
C07J53/00;(IPC1-7):C07J53/00 |
主分类号 |
C07J53/00 |
| 代理机构 |
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