An efficient synthesis of d-ribo- and l-lyxo-phytosphingosine from d-tartaric acid
作者:Xuequan Lu、Robert Bittman
DOI:10.1016/j.tetlet.2005.03.063
日期:2005.5
The preparations of d-ribo- and l-lyxo-phytosphingosines (1, 2) are described. Chelation-controlled addition of tetradecylmagnesium bromide to pentylidene-protected d-threitol aldehyde 6 afforded the key intermediate tetrol 7, providing the desired l-lyxo stereochemistry of phytosphingosine. Inversion at C4 of intermediate 7 provided the d-ribo stereochemistry.