is a reliable synthetic procedure giving access to 3a-methyl- and 3a-methoxycarbonyl enelactams. The substrate-controlled diastereoselective enolate alkylation of these enelactams resulted in the synthesis of a set of 3-substituted derivatives that upon reduction furnished polyfunctionalized cis-octahydroindoles. The latter building blocks, which embody three consecutive stereocenters at C-3, C-3a,
使用Bu 3 SnH和AIBN对N-苄基-N -[(2-取代)环烯基]三
氯乙酰胺(四取代的酰胺)的5-内-trig自由基环化是一种可靠的合成方法,可使用3a-甲基-和3a-甲氧基羰基烯内酰胺。这些烯内酰胺的受底物控制的非对映选择性烯酸酯烷基化导致合成了一组3-取代的衍
生物,其在还原后提供了多官能化的顺式-八氢
吲哚。后者的结构单元在C-3,C-3a和C-7a处具有三个连续的立体中心,它们也是通过使用(碳取代)二
氯乙酰胺进行的初始还原性自由基环化反应合成的。