| 摘要 |
Glycosidation of 4,5-Epoxymorphinan-6-ols with a Thioglycoside as a glycoside donor is disclosed. The process comprises reacting a 4,5-Epoxymorphinan-6-ol and a Thioglycoside in the presence of a thiophilic promoter under conditions capable of forming 4,5-Epoxymorphinan-6-glycosides. This novel approach was used for preparation of pharmaceutically important 4,5-Epoxymorphinan-6-beta-D-glucuronides. The process provides both high stereo-selectivity and high yields.
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