Chemoenzymatic collective synthesis of optically active hydroxyl(methyl)tetrahydronaphthalene-based bioactive terpenoids
作者:Ramesh U. Batwal、Narshinha P. Argade
DOI:10.1039/c5ob01740h
日期:——
Starting from succinic anhydride and 2-methylanisole, a chemoenzymatic collective formal/total synthesis of several optically active tetrahydronaphthalene based bioactive natural products has been presented via advanced level common precursors; the natural product and antipode (−)/(+)-aristelegone B. Regioselective benzylic oxidations, stereoselective introduction of hydroxyl groups at the α-position
从琥珀酸酐和2-甲基苯甲醚开始,已经通过高级通用前体提出了几种基于光学活性四氢萘的生物活性天然产物的化学酶法集体/全部合成方法。天然产物和对映体( - )/(+) - aristelegone B.区域选择性苄基氧化,在酮部分的α位的立体选择性引入羟基顺-orientation,具有高对映体纯度高效酶法拆分,立体选择性的降低,钐碘化物诱导的脱氧和串联酰化-Wittig反应而没有外消旋和/或消除的芳构化是关键特征。还描述了尝试的(±)-缬氨酸的非对映选择性合成。