A direct method is disclosed for the regioselective sulfation of an organic molecule having optionally derivatized hydroxyl groups on at least two adjacent carbon atoms. The method comprises the treatment of a di-(optionally substituted alkyl and/or aryl) stannylene acetal derivative of the molecule with an electrophilic sulfating agent, preferably sulfur trioxide/trimethylamine. The disclosed method is useful for the selective sulfation of a variety of mono-, di- and oligosaccharides. Novel saccharides prepared according to this method are also disclosed.
揭示了一种直接方法,用于对具有至少两个相邻碳原子上的可选择衍生羟基的有机分子进行区域选择性
磺酸化。该方法包括利用一种分子的二(可选择取代的烷基和/或芳基)亚
锡缩醛衍
生物与一种亲电性
磺酸化试剂(最好是
三氧化硫/
三甲胺)进行处理。所揭示的方法对各种
单糖、
双糖和
寡糖的选择性
磺酸化很有用。还揭示了根据该方法制备的新型
糖类。