A high-yielding, one-pot preparation of unsymmetrical glycosyl disulfides using 1-chlorobenzotriazole as an in situ trapping/oxidizing agent
作者:Nashia Stellenboom、Roger Hunter、Mino R. Caira、László Szilágyi
DOI:10.1016/j.tetlet.2010.07.176
日期:2010.10
A high-yielding, one-pot methodology for preparing unsymmetrical glycosyl disulfides derived from sugar, alkyl/aryl or cysteine thiols is reported using 1-chlorobenzotriazole (BtCl) as the oxidant. The highlight of the method is the low temperature of coupling (−78 °C) as well as the in situ trapping of the sulfenyl intermediate, which ensures that no homodimer of R1SH (R1SSR1) is formed. The coupling
据报道,使用1-氯苯并三唑(BtCl)作为氧化剂,制备了一种高产率的一锅法方法,用于制备衍生自糖,烷基/芳基或半胱氨酸硫醇的不对称糖基二硫化物。该方法的亮点是偶联温度低(-78°C)以及亚磺基中间体的原位捕获,可确保不形成R 1 SH(R 1 SSR 1)的均二聚体。偶联效率与糖类型,糖中的硫醇位置,糖保护基团无关,并且各种产品用于说明糖生物学中许多模型系统的快速合成途径。