Synthetic Studies on Glycosphingolipids from Protostomia Phyla: Synthesis of Glycosphingolipids from the Parasite Schistosoma mansoni
作者:Takayuki Kanaya、Satomi Yagi、Frank Schweizer、Tadahiro Takeda、Fumiyuki Kiuchi、Noriyasu Hada
DOI:10.1248/cpb.58.811
日期:——
Synthetic access to three neutral glycosphingolipids from the parasite Schistosoma mansoni adult worm has been achieved. These structures differ significantly from those of other parasites and exhibit a unique structural motif termed “schisto-core” consisting of GalNAcβ1→4Glcβ1→sequence. We have synthesized glycosphingolipids, β-D-GalNAcp-(1→4)-β-D-Glcp-(1→1)Cer (1), β-D-GlcNAcp-(1→3)-β-D-GalNAcp-(1→4)-β-D-Glcp-(1→1)Cer (2) and β-D-Galp-(1→4)-β-D-GlcNAcp-(1→3)-β-D-GalNAcp-(1→4)-β-D-Glcp-(1→1)Cer (3).
通过合成获得了来自曼氏血吸虫成虫的三种中性糖磷脂。这些糖磷脂的结构与其他寄生虫的糖磷脂有很大不同,表现出由 GalNAcβ1→4Glcβ1→ 序列组成的称为 "裂核 "的独特结构基团。我们合成了糖磷脂--β-<小>D小>-GalNAcp-(1→4)-β-<小>D小>-Glcp-(1→1)Cer (1)、β-D-GlcNAcp-(1→3)-β-D-GalNAcp-(1→4)-β-D-Glcp-(1→1)Cer (2) 和 β-D-Galp-(1→4)-β-D-GlcNAcp-(1→3)-β-D-GalNAcp-(1→4)-β-D-Glcp-(1→1)Cer (3)。