作者:Guncheol Kim、Ki Youn Lee、Chul-Hwan Yoo
DOI:10.1080/00397910802116575
日期:2008.9.12
Abstract A new cyclization route, triggered by epoxide opening, has been performed to provide the key intermediates for isoindolobenzapine alkaloids, lennoxamine and chilenine. The epoxide was prepared by the Stille reaction using vinyltributylstannane and the following dioxirane treatment. Cyclization under the treatment of BF3 · OEt2 provided an azepine moiety, and the oxidative cyclization toward the
摘要 通过环氧化物开环引发的新环化路线为异吲哚苯氮平生物碱、伦诺沙明和辣椒碱提供了关键中间体。环氧化物是通过使用乙烯基三丁基锡烷和以下二环氧乙烷处理的 Stille 反应制备的。BF3·OEt2 处理下的环化提供了氮杂环庚烷部分,并且通过与化学计量的Pd(OAc)2 反应实现了向已知生物碱前体的氧化环化。这种正式的合成为生物碱提供了一条新途径。