Novel and Efficient Synthetic Path to Proaporphine Alkaloids: Total Synthesis of (±)-Stepharine and (±)-Pronuciferine
作者:Toshio Honda、Hiroki Shigehisa
DOI:10.1021/ol052841m
日期:2006.2.1
[reaction: see text] A novel synthetic path to proaporphine alkaloids was established by employing aromatic oxidation with a hypervalent iodine reagent, where an unprecedented carbon-carbon bond forming reaction between the para-position of a phenol group and an enamide-carbon took place smoothly to give the desired spiro-cyclohexadienone.
[反应:见正文]通过使用高价碘试剂进行芳族氧化,建立了制备甲酚啡碱生物碱的新途径,其中酚基对位与酰胺碳之间发生了前所未有的碳-碳键形成反应平稳地得到所需的螺-环己二酮。