The discovery of novel conditions for highly β-stereoselective (>9 : 1) mannosylation of OH-2 of mannosides using a straightforward perbenzylthioglycoside donor has allowed ready assembly of β-mannosyl oligosaccharides including the repeating trisaccharide motif of the O5 antigen of pathogen Klebsiella pneumoniae.
利用一种直接的全苄基
硫代糖苷供体对
甘露糖苷的 OH-2 进行高δ-严格选择性(>9:1)
甘露糖基化的新条件的发现,使δ-
甘露糖基
寡糖(包括病原体肺炎克雷伯氏菌 O5 抗原的重复三糖基团)的组装成为可能。