Regiospecific Synthesis of New Methyl Sulfoglucopyranoside-Based Surfactants: Nucleophilic Displacement of a Cyclic Sulfate
作者:Hélène G. Bazin、Robert J. Linhardt
DOI:10.1055/s-1999-3432
日期:1999.4
A two-step regiospecific synthesis of a new class of anionic and amphoteric methyl α-d-glucopyranoside-based surfactants is described. Reaction of methyl α-d-glucopyranoside with thionyl chloride followed by oxidation of the resulting sulfite afforded the corresponding methyl α-d-glucopyranoside 4,6-cyclic sulfate in high yield. Nucleophilic displacement of this cyclic sulfate by different fatty acids and amines led to the corresponding methyl 6-O-acyl- or 6-amino-6-deoxy-4-sulfoglucopyranosides in very good yields. These newly synthesized sulfoglucopyranoside-based surfactants displayed low critical micelle concentration (CMC) values.
本文介绍了一种新型阴离子和两性甲基δ-d-吡喃葡萄糖苷表面活性剂的两步特异性合成方法。甲基 δ±-d-吡喃葡萄糖苷与亚硫酰氯反应,然后氧化生成的亚硫酸盐,就能以高产率得到相应的甲基 δ±-d-吡喃葡萄糖苷 4,6 环硫酸盐。用不同的脂肪酸和胺对这种环状硫酸酯进行亲核置换,可以得到相应的 6-O-酰基或 6-氨基-6-脱氧-4-磺酸基吡喃葡萄糖苷,产率非常高。这些新合成的磺基吡喃葡萄糖苷表面活性剂显示出较低的临界胶束浓度(CMC)值。