作者:Ying Wang、Hui Yao、Min Hua、Yang Jiao、Haibo He、Mingguo Liu、Nianyu Huang、Kun Zou
DOI:10.1021/acs.joc.0c00975
日期:2020.6.5
Direct N-glycosylation between glycals and amides/amines was achieved with exclusive stereoselectivity in moderate to high yields. Various amides, amines, and 3,4-O-carbonate-glycals were tolerated, and unique β-N-glycosides were obtained. The strategy was based on palladium-catalyzed decarboxylative allylation, and the high 1,4-cis-selectivity was proposed because of the hydrogen bonding effect. Notably
糖与酰胺/胺之间的直接N-糖基化反应以专有的立体选择性实现,且产率中等至高。耐受各种酰胺,胺和3,4- O-碳酸酯-糖,并获得独特的β- N-糖苷。该策略基于钯催化的脱羧烯丙基化,并且由于氢键作用而提出了高的1,4-顺式选择性。值得注意的是,所有合成产物都经过了初步的生物活性研究,发现三种化合物对肿瘤细胞具有细胞毒性,对正常人细胞无毒性。