schlegelii , have a unique structure containing one or two mannosyl residues, novel linkages including an internal fucopyranosyl residue, as well as terminal xylosyl and 4- O -methyl- d -glucopyranosyluronic acid groups. The trisaccharide derivatives that constitute the partial structure of lipid IV were synthesized as follows. Condensation of 4,6-di- O -acetyl-2-azido-2-deoxy-3- O -methyl-α- d -galactopyranosyl
摘要从淡
水双壳虫(Hyriopsis schlegelii)的精子中分离出的糖鞘脂具有一个独特的结构,该结构包含一个或两个
甘露糖基残基,新的连接包括一个内部的
呋喃糖基残基,以及末端的
木糖基和4-O-甲基-d-
葡萄糖基
吡喃糖醛糖醛酸糖醛酸。酸基团。构成脂质IV的部分结构的三糖衍
生物如下合成。4,6-二-O-乙酰基-2-
叠氮基-2-脱氧-3-O-甲基-α-d-
吡喃半
乳糖基
溴化物与2-(三甲基甲
硅烷基)乙基4-O-乙酰基-2-O-苄基的缩合在
氰化汞和
溴化汞的存在下,-β-1-
呋喃二糖苷以87%的收率得到相应的二糖。甲基(2,