SYNTHESIS OF (6-<sup>2</sup>H)- AND 6-DEOXY-6-FLUORO-<scp>L</scp>-GALACTOSE DERIVATIVES<sup>1</sup>
作者:Meinolf Brackhagen、Hanna Boye、Christian Vogel
DOI:10.1081/car-100102541
日期:2001.2.4
The selective oxidation of trimethylsilylated D-galactose diethyl dithioacetal using Collins reagent provided the corresponding D-galacto-hexo-dialdo dithioacetal. Successive acid hydrolysis, isopropylidenation, and cleavage of the dithioacetal group gave the 1,2;3,4-di- O-isopropylidene-L-galacto-hexodialdo-1,5-pyranose as a key intermediate for the synthesis of 6-fluoro-and 6-deutero-substituted
使用柯林斯试剂对三甲基甲硅烷基化的D-半乳糖二乙基二硫缩醛进行选择性氧化,可提供相应的D-半乳糖-己二醛-二缩醛二硫缩醛。连续的酸水解,异亚丙基化和二硫缩醛基的裂解,得到了1,2; 3,4-二-O-异亚丙基-L-半乳糖-己二醛-1,5-吡喃糖,是合成6-氟的关键中间体-和6-氘取代的L-岩藻糖衍生物。1献给PeterKöll教授60岁生日。