A series of peracetylated beta-sugar-1-phosphates with L-fuco configuration are efficiently prepared chemically and coupled in high yields to purine monophosphate bases via imidazolide activation. The resulting purine diphosphate sugars are deacetylated completely by a mild treatment with commercial acetylesterase (EC 3.1.1.6) to give donor-substrates for fucosyl-transferases.
可以有效地
化学制备一系列具有L-fuco构型的过乙酰化β-糖-1-
磷酸酯,并通过
咪唑内酯活化以高收率将其与
嘌呤单
磷酸酯碱偶联。通过用工业乙酰
酯酶(
EC 3.1.1.6)进行温和处理,将所得的
嘌呤二
磷酸糖完全脱乙酰,得到岩藻糖基转移酶的供体底物。