Reaction of 3-methoxy-17-methylmorphinan-6-one with formaldehyde
作者:David L. Leland
DOI:10.1002/jhet.5570180608
日期:1981.10
Reaction of 3-methoxy-17-methylmorphinan-6-one (1) and formaldehyde with the presence of calcium hydroxide in aqueousdioxane gave 7,7-bis(hydroxymethyl)-3-methoxy-17-methyl-5-methylenemorphinan-6β-ol (2a). Catalytic reduction of 2a yielded the 5α-methyl compound, 2b. Tosylation of 2a,b followed by lithium triethylborohydride reduction gave either 7α-methyl-6β,7β-oxetanes 4a,b or 7,7-dimethyl-6β-ols