作者:Jacques Defaye、Andrée Gadelle、Chuan C. Wong
DOI:10.1016/s0008-6215(00)80712-0
日期:1981.8
Abstract Oxidation with the dimethyl sulfoxide-acetic anhydride reagent of methyl 2- O -acetyl-4,6- O -benzylidene-α- d -mannopyranoside, obtained in quantitative yield from the corresponding 4,6-benzylidene acetal by stereoselective opening of a 2,3-orthoester, led in good yield to methyl 2- O -acetyl-4,6- O -benzylidene-α- d - arabino -hexopyranosid-3-ulose, which was reduced with either sodium borohydride
摘要用二甲基亚砜-乙酸酐试剂氧化甲基2-O-乙酰基-4,6-O-亚苄基-α-d-甘露吡喃糖苷,通过相应的4,6-亚苄基乙缩醛的立体选择性开环得到定量收率2,3-原酸酯的高收率导致生成甲基2-O-乙酰基-4,6-O-苄叉基-α-d-阿拉伯糖基-己基吡喃糖苷-3-ulose,然后用硼氢化钠或硼氢化氘将其还原为甲基4,6-O-亚苄基-α-d-阿托吡喃糖苷或其3- 2 H衍生物。涉及C-6卤化-脱氢卤化,然后催化氢化所得的甲基6-脱氧-α-d-阿拉伯-hex-5-烯吡喃糖苷的序列,得到甲基6-脱氧-β-1-吡喃半乳糖苷(甲基β-1-)。 fucopyranoside),然后是α-1-L-岩藻糖,