a water-soluble carbodiimide. The SE glycosides were then transformed to glycosyl imidates, and these were coupled with methyl 6-hydroxyhexanoate or methyl 2-(2-hydroxyethylthio) propionate. The aglycons in the glycosides thus obtained were then converted to the corresponding carboxylic acids or acyl hydrazides. Such compounds are suitable for linking to proteins to obtain neoglycoproteins.
由中间的,完全乙酰化的α-三甲基甲
硅烷基乙基(
SE)糖苷制备标题物质。后者以具有两个4-
叠氮基4-脱氧功能的二糖的α-糖基
氯作为糖基供体以嵌段方式组装。接下来,将组装的六糖中的
叠氮基团转化为相应的胺,并在
水溶性碳二
亚胺存在下用4-O-苄基-3-脱氧-L-
甘油-四氢代酸将它们酰化。然后将
SE糖苷转化为糖基
酰亚胺,并将它们与
6-羟基己酸甲酯或2-(2-羟基乙
硫基)
丙酸甲酯偶联。然后将如此获得的糖苷中的糖苷配基转化为相应的
羧酸或酰
肼。这样的化合物适合与蛋白质连接以获得新糖蛋白。