作者:Laura Cipolla、Amalia Palma、Barbara La Ferla、Francesco Nicotra
DOI:10.1039/b206623h
日期:2002.10.1
Nojirimycin α-C-glycosides, which have 1-α-allyl-1-deoxy-N-benzyl-2,3,4,6-tetra-O-benzylnojirimycin (9) as a key intermediate for further derivatisation, have been synthesized from commercially available 2,3,4,6-tetra-O-benzyl-D-glucopyranose (3) through a highly stereoselective procedure which involves treatment of 3 with benzylamine, reaction of the obtained glucosylamine 4 with allylmagnesium bromide
野尻霉素α- Ç -glycosides,其具有1-α-烯丙基-1-脱氧ñ -苄基-2,3,4,6-四Ö -benzylnojirimycin(9),作为进一步的关键中间体衍生化,已由市售产品合成 2,3,4,6-四-O-苄基-D-吡喃葡萄糖(3),通过它涉及治疗的高立体选择性过程3与苄胺,得到的葡糖胺4与烯丙基溴化镁 和 环化Fmoc-保护对伸长的开链氨基糖5的合成,氧化作用的游离羟基和分子内的还原胺化反应,在59%的总收率中可提供9%的收率。有效控制9的烯丙基附件需要N-脱苄基和环的Fmoc-保护氮。