Asymmetric Synthesis of <scp>d</scp>-<i>ribo</i>-Phytosphingosine from 1-Tetradecyne and (4-Methoxyphenoxy)acetaldehyde
作者:Zheng Liu、Hoe-Sup Byun、Robert Bittman
DOI:10.1021/jo100707d
日期:2010.7.2
synthesis of d-ribo-phytosphingosine (1) was achieved by utilizing the ProPhenol (12)-catalyzed alkynylation of unsaturated aldehyde 8 to afford allylic propargylicalcohol (S)-6 followed by asymmetric epoxidation and opening of propargylic epoxy alcohol anti-5 with NaN3/NH4Cl. Deprotection and reduction of the resulting acyclic azide 3 then gave 1. Alkyne−azide 3 was subjected to an intramolecular click