Preparation of Anhydro-Thiohexofuranosides from Methyl Fructofuranosides Via the Thio-Mitsunobu Reaction
作者:Kerstin Polchow、Jürgen Voss
DOI:10.1080/104265090508424
日期:2005.7.1
Abstract Methyl α-D-fructofuranoside was transformed regioselectively into the corresponding 6-S-thioacetate in one step by use of the thio-Mitsunobu reaction. Reaction of the trimesylate derived from this thioacetate with sodium hydrogen carbonate led to the thietanosugar methyl 4,6-anhydro-1,3-di-O-mesyl-4-thio-α-D-tagatofuranoside. Methyl β-D-fructofuranoside gave the corresponding 6-S-thioacetate
摘要 α-D-呋喃果糖甲酯通过硫代-Mitsunobu反应一步区域选择性地转化为相应的6-S-硫代乙酸酯。衍生自该硫代乙酸盐的三甲磺酸盐与碳酸氢钠反应生成硫杂糖甲基 4,6-脱水-1,3-二-O-甲磺酰基-4-硫代-α-D-塔格呋喃糖苷。甲基 β-D-呋喃果糖苷得到相应的 6-S-硫代乙酸盐,并与过量的硫代乙酸产生 1-S,6-S-双-硫代乙酸盐。虽然这种单硫代乙酸酯没有产生硫杂环丁烷衍生物,但双硫代乙酸酯产生了双硫杂环丁烷甲基 1,3:4,6-二脱水-1,4-二硫代-β-D-山梨呋喃糖苷和碳酸氢钠。