中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | (-)-4-hydroxy-N-formylmorphinan-6-one | 76193-30-1 | C17H19NO3 | 285.343 |
(−)-4-Hydroxy-N-formylmorphinan-6-one (4) was prepared in 70% overall yield from ketone 1, via carbamate 2, and N-formylation of ketone 3. Bromination of 4 afforded either the 6-ketomorphinan 7 or the ketone 8, depending on the reaction conditions applied. Both bromo ketones 7 and 8 could be converted by standard reactions into 4,5-epoxy-N-methylmorphinan-6-one (1). The ketomorphinan 4 emerges from these investigations as a versatile intermediate, well suited for the synthesis of 4-hydroxymorphinans and 3-deoxyopioids.