专利号:WO-2025090435-A1 优先权日:2023-10-26 标题 :Alfaxalone synthesis 发明人:LIN ANDREW JENG SHYAN; SCOTT CAMPBELL F; RANASHINGHE RANE; MCLAREN LOUISE SALLY; WEBBER JESSIE LAUREN 权利人:ZOETIS SERVICES LLC 摘要:A process for preparing and purifying alfaxalone (3α-hydroxy-5α-pregnane) from a crude mixture of 3α- and 3β-hydroxy-5α-pregnane; and subsequent purification of the 17α- and 17β-enantiomers to obtain the 17β- enantiomer (alfaxalone).
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