作者:Wolfgang Oppolzer、Christian G. Bochet
DOI:10.1016/s0957-4166(00)00447-x
日期:2000.12
families possess an interesting spirotricyclic skeleton. An intramolecular nitrone/olefin 1,3-dipolar cycloaddition has been used to form their spirocyclic 1-azaspiro[4.5]decane core in a regio- and stereoselective fashion. The cyclization precursor can be easily accessed using the asymmetric electrophilic hydroxyamination of enolate.
来自cylindricine和lepadiformine家族的海洋生物碱具有一个有趣的螺三环骨架。分子内的硝酮/烯烃1,3-偶极环加成反应已用于形成区域和立体选择性的螺环1-azaspiro [4.5]癸烷核心。使用烯醇盐的不对称亲电子羟基胺化可以很容易地获得环化前体。