| 摘要 |
PCT No. PCT/GB97/00023 Sec. 371 Date Jul. 2, 1998 Sec. 102(e) Date Jul. 2, 1998 PCT Filed Jan. 6, 1997 PCT Pub. No. WO97/25330 PCT Pub. Date Jul. 17, 1997The subject invention concerns a process for the preparation of enantiomerically-enriched galanthamine from racemic galanthamine, and a process for increasing the enantiomeric excess of enantiomerically-enriched galanthamine, by direct crystallization of galanthamine salts. |
