发明名称 |
PREPARATION OF TETRAHYDROLIPSTATIN BY HYDROGENATION OF LIPSTATIN, SOLVENT EXTRACTION AND PURIFICATION |
摘要 |
<p>A process for obtaining substantially pure tetrahydrolipstatin (Orlistat) by a) extraction of a water miscible layer containing lipstatin with a water immiscible solvent, b) concentration of the water immiscible layer, c) extraction of the concentrate with a water miscible solvent, d) catalytic hydrogenation of the water miscible layer to afford tetrahydrolipstatin, e) filtration of the mixture from (d), f) treating with water or water miscible solvent, g) extraction with water immiscible solvent and concentration, h) affording tetrahydrolipstatin, i) treating with water miscible solvent to afford pharmaceutical pure tetrahydrolipstatin.</p> |
申请公布号 |
WO2005007639(A1) |
申请公布日期 |
2005.01.27 |
申请号 |
WO2003IN00243 |
申请日期 |
2003.07.17 |
申请人 |
BIOCON LIMITED;VIJAYA, KUMAR, VEERANNA;MATHEW, JOY;PUTHIAPARAMPIL, TOM, THOMAS;GANESH, SAMBASIVAM |
发明人 |
VIJAYA, KUMAR, VEERANNA;MATHEW, JOY;PUTHIAPARAMPIL, TOM, THOMAS;GANESH, SAMBASIVAM |
分类号 |
C07D305/12;C12P7/62;(IPC1-7):C07D305/12 |
主分类号 |
C07D305/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|