A new general approach for the stereocontrolled synthesis of functionalised γ- and δ-lactams
作者:Mark Daly、Kathryn Gill、Mairi Sime、Graham L. Simpson、Andrew Sutherland
DOI:10.1039/c1ob05833a
日期:——
A new flexible approach for the stereoselective synthesis of substituted 1H-pyrrol-2(5H)-ones and 3,6-dihydro-1H-pyridin-2-ones has been developed. The general strategy employed the stereoselective reduction of a series of α,β-unsaturated ketones under chelation control to give the corresponding allylic alcohols. Overman rearrangement to install the key C–N bond followed by conversion to either prop-2-enoyl
已开发出一种新的灵活的方法,用于立体选择性合成取代的1 H-吡咯-2(5 H)-one和3,6-dihydro-1 H-吡啶-2-酮。一般策略是在螯合控制下采用立体选择性还原一系列α,β-不饱和酮,得到相应的烯丙基醇。超载重排以安装关键的C–N键,然后转化为丙-2-烯酰基或丁-3-烯酰基衍生物,并且闭环易位反应产生目标不饱和γ-和δ-内酰胺。这些化合物作为结构单元的合成效用已通过(-)-coniine的N- Boc衍生物的制备得到了证明。