作者:Michael P. Kotick、David L. Leland、Joseph O. Polazzi、John F. Howes、Ann R. Bousquet
DOI:10.1021/jm00144a015
日期:1981.12
The preparation of a series of 7 alpha-alkylated dihydrocodeinones is described. N-(Cyclopropylmethyl) (P series) or N-(cyclobutylmethyl) (B series) 7 alpha-methyl (a series) or 7 alpha, 8 beta-dimethyl (b series) substituted dihydronorcodeinones (7) were prepared from the appropriately substituted N-(cycloalkylmethyl)-4-hydroxymorphinan-6-ones (5) by dibromination, 4,5-epoxy ring closure, and catalytic