Enantioselective Total Synthesis and Biological Evaluation of (+)-Kibdelone A and a Tetrahydroxanthone Analogue
作者:Dana K. Winter、Mary Ann Endoma-Arias、Tomas Hudlicky、John A. Beutler、John A. Porco
DOI:10.1021/jo401169z
日期:2013.8.2
The total synthesis of kibdelone A has been accomplished via In(III)-catalyzed arylation of a heterocyclic quinone monoketal and iodine-mediated oxidative photochemical electrocyclization for construction of the ABCDring moiety. Enzymatic dihydroxylation of methyl 2-halobenzoate substrates was employed for synthesis of activated 2-halo-cyclohexene F-ring fragments. A one pot oxa-Michael/Friedel–Crafts
Kibdelone A 的全合成是通过 In(III) 催化的杂环醌单缩酮的芳基化和碘介导的氧化光化学电环化来构建 ABCD 环部分完成的。2-卤代苯甲酸甲酯底物的酶促二羟基化用于合成活化的 2-卤代环己烯 F 环片段。一锅oxa -Michael/Friedel-Crafts 工艺允许获得第一个简化的 kibdelones 的 DEF 环类似物。