| 发明名称 |
Process for production of diacetylrhein |
| 摘要 |
The present invention provides a process for obtaining diacetylrhein, wherein diacetylrhein containing aloe-emodin components is subjected to a liquid-liquid partitioning between a polar organic solvent which is only partly miscible with water and an aqueous phase of pH 6.5. to 7.5 and the diacetylrhein is recovered and optionally recrystallised. The present invention is also concerned with diacetylrhein obtainable by this process and with pharmaceutical compositions containing it.
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| 申请公布号 |
US5391775(A) |
申请公布日期 |
1995.02.21 |
| 申请号 |
US19940236682 |
申请日期 |
1994.04.29 |
| 申请人 |
MADAUS AG |
发明人 |
CARCASONA, ALFONS;GRIMMINGER, WOLF;HEITALA, PENTTI;WITTHOHN, KLAUS;ZAESKE, HELGA |
| 分类号 |
A61K31/22;A01N37/10;A61K31/19;A61K31/192;A61K31/222;A61K31/235;A61K36/18;A61P19/02;A61P25/04;A61P29/00;C07C67/48;C07C67/52;C07C67/58;C07C69/00;C07C69/157;C07C69/16;C07C69/95;(IPC1-7):C07C50/34 |
主分类号 |
A61K31/22 |
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