作者:Jaime Rojas-Martín、Marcos Veguillas、María Ribagorda、M. Carmen Carreño
DOI:10.1021/ol402689b
日期:2013.11.15
Indole substituted twistane-like derivatives resulted in a reaction between 3,5-dimethyl-2-quinonyl boronic acid and 2-alkenyl indoles. Their MCPBA oxidation gave 6/6/9 caged systems. Boronic acid acts as a temporal promoter allowing a site-selective conjugate addition of the heteroaromatic system to the methyl substituted C-3 quinone carbon, giving an intermediate diene which is regioselectively trapped
吲哚取代的类twist烷衍生物导致3,5-二甲基-2-喹啉基硼酸与2-烯基吲哚之间的反应。他们的MCPBA氧化生成6/6/9笼状系统。硼酸充当时间启动子,允许将杂芳族系统位点选择性共轭加成到甲基取代的C-3醌碳上,得到中间体二烯,该二烯被分子内[4 + 2]环加成区域选择性地捕获。