Diastereoselectivity in the directed aldol condensation of 2-trimethylsiloxyfuran with aldehydes. A stereodivergent route to threo and erythro δ-hydroxy-γ-lactones
作者:Charles W. Jefford、Danielle Jaggi、John Boukouvalas
DOI:10.1016/s0040-4039(01)83855-7
日期:1987.1
Threo and erythro-δ-hydroxy-α,β-unsaturated γ-lactones are obtained with useful diastereoselection by condensing 2-trimethylsiloxyfuran and aldehydes by varying the reaction reaction conditions. A stereomechanistic rationale is presented together with a practical two-step synthesis of the threo and erythro 5-hydroxy-4-decanolides (L factors).
通过改变反应反应条件,使2-三甲基甲硅烷氧基呋喃和醛缩合,可以得到有用的非对映体选择,得到苏-和赤--δ-羟基-α,β-不饱和γ-内酯。提出了立体力学原理,并结合了实用的两步合成苏式和赤式5-羟基-4-癸醇化物(L因子)的方法。