The disaccharide allyl glycosides 4, 8, 13 and the trisaccharide 33
 have been prepared using heptopyranosyl trichloroacetimidate 1 or the
 disaccharide bromide 27 as glycosyl donors followed by efficient
 O-phosphorylation via the amidite procedure. The allyl
 glycosides 4, 8 and 33 are converted into 3-(2-aminoethylthio)propyl
 glycosides and are coupled to bovine serum albumin. The resulting
 neoglycoconjugates 6 and 35 containing spacer-linked Hep-(1â4)-Kdo
 and Hep-(1â5)-Kdo 4-phosphate-(2â6)-β-GlcNAc
 residues correspond to part structures of the inner core region in
 bacterial lipopolysaccharide, whereas compound 10 contains the
 artificial analogue Hep-(1â4)-Kdo 5-phosphate. The compounds may be
 used in immunochemical characterisation of monoclonal antibodies.
                                    使用庚
吡喃糖基三
氯乙酰亚
氨酸 1 或
双糖溴化物 27 作为糖基供体,然后通过脒基程序进行有效的 O-
磷酸化,制备出了
双糖烯丙基糖苷 4、8、13 和三糖 33。烯丙基苷 4、8 和 33 转化为 3-(2-
氨基乙
硫基)丙基苷,并与
牛血清白蛋白偶联。由此制得的新糖苷结合物 6 和 35 含有间隔连接的 Hep-(1â4)-Kdo 和 Hep-(1â5)-Kdo 4-
磷酸-(2â6)-δ²-GlcNAc 残基,与细菌脂
多糖内核区的部分结构相对应,而化合物 10 则含有人工类似物 Hep-(1â4)-Kdo 5-
磷酸。这些化合物可用于单克隆
抗体的免疫
化学鉴定。