作者:Yuichi Yoshimura、Tetsuya Kuze、Mari Ueno、Fumiko Komiya、Kazuhiro Haraguchi、Hiromichi Tanaka、Fumitaka Kano、Kohei Yamada、Kazuhiro Asami、Nobuaki Kaneko、Hiroki Takahata
DOI:10.1016/j.tetlet.2005.11.049
日期:2006.1
A practical synthesis of 4′-thioribonucleosides starting from inexpensive l-arabinose is described. 1,4-Anhydro-2,3-O-isopropylidene-4-thioribitol, which was prepared by using a novel reductive ring-contraction reaction, was converted to the 5-O-silylated sulfoxides. The Pummerer-type thioglycosylation of the sulfoxides gave the 4′-thioribonucleosides stereoselectively.
描述了从廉价的1-阿拉伯糖开始的4'-硫代核糖核苷的实际合成。通过使用新型的还原性环收缩反应制备的1,4-脱水-2,3 - O-异亚丙基-4-硫代核糖醇被转化为5-O-甲硅烷基化的亚砜。亚砜的Pummerer型硫糖基化立体选择性地产生了4'-硫代核糖核苷。