A convergent synthesis of 1-(β-D-glucopyranosyl)-, 1-(α-D-mannopyranosyl)- and 1-(β-D-ribofuranosyl)benzocamalexin was elaborated as an alternative route to the linear approach based on the indoline-indole method. 1,2-Anhydrosaccharides and 1,2-cyclic sulfites as saccharide donors were used in the key glycosylation step. Coupling with benzocamalexin resulted in moderate to excellent yields of nucleoside analogs, depending on the saccharide donor, catalyst and solvent used.
以β-D-葡萄糖苷基、α-D-甘露糖苷基和β-D-核糖呋喃苷基苯并卡马列克辛的收敛合成为替代线性方法的路线,基于吲哚-吲哚方法。在关键的糖基化步骤中使用了1,2-脱水糖和1,2-环状亚硫酸盐作为糖基供体。与苯并卡马列克辛偶联,根据所用的糖基供体、催化剂和溶剂,以中等至极好的产率得到了核苷酸类似物。