Asymmetric Synthesis of γ-Hydroxy α,β-Unsaturated Amides via an AD-elimination Process; Synthesis of (+)-Coriolic Acid
作者:Youssef L Bennani、K.Barry Sharpless
DOI:10.1016/s0040-4039(00)60351-9
日期:1993.3
An efficient, asymmetric synthetic route to γ-hydroxy α,β-unsaturated ketone and/or aldehyde equivalents is described. Thus, 3,4-dihydroxy N-methoxy-N-methyl amides are treated in a one pot process with thionyl chloride followed by DBU to give the corresponding γ-hydroxy α,β-unsaturated amides in good yields. Based on this methodology, a short sequence leading to natural (+)-Coroilic acid is presented
描述了一种有效的,不对称的合成途径,以合成γ-羟基α,β-不饱和酮和/或醛当量。因此,将3,4-二羟基N-甲氧基-N-甲基酰胺在一个一锅法中用亚硫酰氯,然后用DBU处理,以良好的产率得到相应的γ-羟基α,β-不饱和酰胺。基于该方法,提出了导致天然(+)-亚麻酸的短序列。