Synthesis of Glycosides with 4-(4-Hydroxyphenyl)-1,2,3-thia- and -selenadiazole Aglycones
作者:L. M. Pevzner、M. L. Petrov、E. B. Erkhitueva、V. A. Polukeev、A. V. Stepakov
DOI:10.1134/s1070363219070089
日期:2019.7
6-tetra-O-acetyl-D-galactopyranose, and 1-α-bromo-2,3,5-tri-O-acetyl-D-xylopyranose under the conditions of interphase catalysis has afforded the corresponding acetylated glycosides. An alternative pathway of selenadiasole glycosides synthesis from semicarbazones of 1-β-O-(4-acetylphenyl)-2,3,4,6-tetra-O-acetyl-D-glucopyranose, -2,3,4,6-tetra-O-acetyl-D-galactopyranose, and -2,3,5-tri-O-acetyl-D-xylopyranose
4-(4-羟苯基)-1,2,3-硫杂(硒代)二唑与1-α-溴-2,3,4,6-四-O-乙酰基-D-吡喃葡萄糖,1-α-的糖基化在相间催化条件下提供了溴代2,3,4,6-四-O-乙酰基-D-吡喃半乳糖和1-α-溴代2,3,5-三-O-乙酰基-D-吡喃二糖相应的乙酰化糖苷。从1-β- O-(4-乙酰基苯基)-2,3,4,6-四-O-乙酰基-D-吡喃葡萄糖,-2,3,4,6-tetra的半咔唑合成硒醚重氮糖苷的另一种途径- ö乙酰基d吡喃半乳糖,和-2,3,5-三ö通过用二氧化硒氧化乙酰基d吡喃木糖已经详细阐述。