A novel synthesis of [O-methyl-14C]dextromethorphan: utility of the vinyloxycarbonyl group
摘要:
A novel, selective approach to [O-methyl-C-14] Dextromethorphan is presented. The key feature is protection of 3-hydroxymorphinan at nitrogen and oxygen with the vinyloxycarbonyl group. This allows selective O-deprotection and methylation without competing nitrogen quaternization. The N-vinyloxy carbonyl group is converted to the desired methyl group by lithium aluminum hydride reduction.