been efficiently and collectively synthesized. The synthetic approach features the following: (1) a stereoselective orthogonal one-pot glycosylation strategy for both 1,2-trans- and 1,2-cis-glycosidic linkages; (2) a merged reagent modulation and remote anchimeric assistance (RMRAA) α-glucosylation strategy; (3) DMF-modulated α-glucosylation; (4) convergent [3 + 4 + 6] orthogonal one-pot assembly of the
具有强大抗氧化活性的蛹虫草聚糖已被有效地集体合成。合成方法具有以下特点:(1) 1,2-反式和 1,2-顺式糖苷键的立体选择性正交一锅糖基化策略;(2) 合并试剂调制和远程嵌合辅助 (RMR
AA) α-糖基化策略;(3)
DMF调节的α-糖基化;(4)目标十三糖的收敛[3+4+6]正交一锅组装。