作者:Maarten H.D. Postema、Daniel Calimente
DOI:10.1016/s0040-4039(99)00815-1
日期:1999.6
The DCC mediated coupling reaction of 3,4,6-tri-O-benzyl-1,2-dideoxy-d-arabino-hex-1-enitol (5a) with a variety of sugar based carboxylic acids 6a-d gave esters 7a-d in good yield. Methylenation of the formed esters led to the acyclic enol ethers 8a-d and exposure to the Schrock molybdenum catalyst 1 in warm toluene, in the box, gave the target C-disaccharide glycals 9a-d in good yield. The 1,6-linked
3,4,6-三-O-苄基-1,2-二脱氧-d-阿拉伯糖基-己-1-烯醇(5a)与多种糖基羧酸6a-d的DCC介导的偶联反应得到酯7a -d的产量高。形成的酯的亚甲基化导致无环烯醇醚8a-d,并在盒子中在温暖的甲苯中暴露于Schrock钼催化剂1中,以良好的产率得到目标C-二糖二醇9a-d。将1,6-连接的基于葡萄糖的C-二糖聚糖9a转化为2-脱氧-β-葡萄糖衍生物10a以及相应的葡萄糖β-葡萄糖-C-二糖13。