Formation of methyl 5-thiopentopyranosides in the d-arabino, l-lyxo, d-ribo, and d-xylo series from methyl 5-thio-3-O-toluene-p-sulphonyl-α-d-xylopyranoside
Formation of methyl 5-thiopentopyranosides in the d-arabino, l-lyxo, d-ribo, and d-xylo series from methyl 5-thio-3-O-toluene-p-sulphonyl-α-d-xylopyranoside
Syntheses and conformations of 3-acetamido-3-deoxy-5-thio-d-xylose and 4-acetamido-4-deoxy-5-thio-l-lyxose and some derivatives thereof
作者:Najim A.L Al-Masoudi
DOI:10.1016/0008-6215(92)84129-g
日期:1992.4
Abstract In reactions with azide ions, methyl 5-thio-3- O - p -toluenesulphonyl-α- d -xylopyranoside gave methyl 3-azido-3-deoxy-5-thio-α- d -xylopyranoside, methyl 4- O -acetyl-2,3-anhydro-5-thio-α- d -ribofuranoside ( 7 ) afforded a mixture of methyl 4- O -acetyl-3-azido-3-deoxy-5-thio-α- d -xylopyranoside and the 2-azido-2-deoxy- d arabino analogue, and methyl 2- O -acetyl-3,4-anhydro-5-thio-α-