Synthesis of type 2 human blood-group antigenic determinants. The H, X, and Y haptens and variations of the H type 2 determinant as probes for the combining site of the lectin I of Ulex europaeus
作者:Ole Hindsgaul、Thomas Norberg、Jacques Le Pendu、Raymond U. Lemieux
DOI:10.1016/0008-6215(82)84034-2
日期:1982.11
Chemical syntheses of the human blood-group antigenic determinants derived from N-acetyllactosamine are described; namely, the 6-deoxy derivative, the 4'-epimer, and the 5 H type 2 [alpha LFuc(1 to 2)beta DGal-(1 to 4)beta DGlcNAc], X [beta DGal(1 to 4)[alpha LFuc(1 to 3)[beta DGlcNAc], and Y [alpha LFuc-(1 to 2)beta DGal(1 to 4)[alpha LFuc(1 to 3)]beta DGlcNAc] determinants as glycosides of 8-carboxymethyloctanol
描述了衍生自N-乙酰基乳糖胺的人血型抗原决定簇的化学合成。即6-脱氧衍生物,4'-末端和5 H 2型[αLFuc(1至2)beta DGal-(1至4)beta DGlcNAc],X [beta DGal(1至4)[ αLFuc(1至3)βDGlcNAc和Y [αLFuc-(1至2)βDGal(1至4)[αLFuc(1至3)]βDGlcNAc]决定基为8-羧甲基辛醇的糖苷。为了研究H 2决定簇与欧洲油菜的凝集素I的结合,还设计了专门改变H 2决定簇的亲水和疏水部分的结构。即6-脱氧衍生物,4'-末端和5“-正同源物。这些结构的使用,连同H 1型半抗原和H 1型和H 2型决定簇的N-去乙酰化形式一起,作为凝集素对O红细胞凝集的抑制剂,可以得出以下结论:H 2决定簇的结合是疏水性 结合涉及行列式分子的楔形部分,该楔形部分基本上是疏水性的,除了在楔形尖端处的5-羟甲基基团外,与O-5形成分子内氢