Phase-transfer-catalyzed d-glucosylation: Synthesis of benzoylated aryl β-d-glucopyranosides and β-d-glucopyranosyl-substituted cinnamates
作者:Duraikkannu Loganathan、Girish K. Trivedi
DOI:10.1016/0008-6215(87)80206-9
日期:1987.4
Abstract Phase-transfer-catalyzed d -glucosylation of chelated phenolic aglucons and substituted cinnamic acids, using 2,3,4,6-tetra- O -benzoyl-α-glucopyranosyl bromide, resulted in the stereospecific formation of benzoylated aryl β-glucopyranosides and substituted-β- d -glucopyranosyl cinnamates, respectively, in good pyranosides and substituted-β- d -glucopyranosyl cinnamates, respectively, in good
摘要用2,3,4,6-四-O-苯甲酰基-α-吡喃葡萄糖基溴化物进行相转移催化的螯合酚醛糖苷和取代的肉桂酸的d-葡萄糖基化反应,导致苯甲酰化的芳基β-吡喃葡萄糖苷和分别以良好的吡喃糖苷类取代-β-d-葡萄糖基吡喃糖基肉桂酸酯和分别以良好的产率分别形成取代的-β-d-葡萄糖基吡喃糖基肉桂酸酯。结果最终证实了较早的报道,即相转移方法需要碳水化合物部分中C-2或C-6处的非参与基团。在所有这些反应中,得到次要的副产物1,2,3,4,6-Penta-O-苯甲酰基-β-d-吡喃葡萄糖。讨论了相转移方法的可能机理。