Regioselective Inversion of the Hydroxyl Group in <scp>d</scp>-<i>ribo</i>-Phytosphingosine via a Cyclic Sulfate and Bis-Sulfonate Intermediate
作者:Yun Mi Lee、Dong Jae Baek、Seokwoo Lee、Deukjoon Kim、Sanghee Kim
DOI:10.1021/jo101757k
日期:2011.1.21
The selective synthesis of d-xylo- and d-lyxo-phytosphingosines from commercially available d-ribo-phytosphingosine is described. Thermolysis of the N-carbonyl protectedcyclic sulfate led to an inversion of configuration of the proximal hydroxylgroup to give the xylo-isomer, whereas the corresponding bis-sulfonate resulted in an inversion of configuration of the distal hydroxylgroup to give the lyxo-isomer