作者:Liyan Song、Hongliang Yao、Rongbiao Tong
DOI:10.1021/ol501593m
日期:2014.7.18
Biomimetic total syntheses of potent antiviral spirooliganones A and B were achieved with 3% and 2% yield, respectively, in 12 steps from commercially available materials. The synthetic strategy was inspired primarily by the biogenetic hypothesis and was enabled by two independent cascade events: (i) an unprecedented reaction involving aromatic Claisen rearrangement/o-quinone methide formation/hetero-Diels–Alder
从市售材料中分12步获得了有效的抗病毒螺旋藻A和B的仿生全合成,收率分别为3%和2%。合成策略主要受到生物遗传学假设的启发,并受到两个独立的级联事件的启发:(i)涉及芳香族克莱森重排/邻醌甲基化物形成/杂Diels-Alder环加成反应以构建四环骨架的前所未有的反应;和(ii )酚氧化脱芳香化/螺环化,以构建螺环稠合的环己二酮/四氢呋喃部分。