β-Selective Glycosylation of 5-Thioglucopyranose Derivatives; Syntheses of β-(1→6) Linked 5′-Thioglucopyranosyl Disaccharides
作者:Keiichiro Ohara、Hiroko Matsuda、Masaru Hashimoto、Kazuo Miyairi、Toshikatsu Okuno
DOI:10.1246/cl.2002.626
日期:2002.6
was achieved by performing the reaction with pivaloyl- or benzoyl-protected glucopyranosyl trichloroacetimidates and BF3OEt2, a glycosyl activator, when C6-OH glucopyranosyl or galactopyranosyl derivatives were employed as acceptors.
当使用 C6-OH 吡喃葡萄糖基或吡喃半乳糖衍生物作为受体时,通过与新戊酰基或苯甲酰基保护的吡喃葡萄糖基三氯乙酰亚胺酯和 BF3OEt2(一种糖基活化剂)进行反应,实现了与 5-硫代吡喃葡萄糖的 β-立体选择性和有效糖基化。