Prototypes corresponding to glycopeptide fragments of actinoidin antibiotics have been synthesized using an L-acosaminyl-D-glucose-containing heterodisaccharide linked to 4-hydroxyphenylglycine as pivotal synthon. This latter compound has been obtained by coupling of a suitably protected D-glucopyranosyl bromide with the blocked amino acid, followed by selective deprotection of the glucopyranosyl moiety at C-2 and subsequent stereospecific attachment of the acosaminyl unit.
与抗生素作用素片段对应的原型已经合成,使用了一个含有L-阿克萨糖胺-
D-葡萄糖的异二糖,该异二糖连接在
4-羟基苯基甘
氨酸上,作为关键合成单元。后者化合物是通过将适当保护的
D-葡萄糖吡喃基
溴化物与被阻断的
氨基酸偶联得到的,随后选择性去保护C-2位的
葡萄糖吡喃基部分,并随后立体特异性地连接阿克萨糖胺单元。