Multigram-scale synthesis of l,d-heptoside using a Fleming-Tamao oxidation promoted by mercuric trifluoroacetate
作者:Tianlei Li、Abdellatif Tikad、Maxime Durka、Weidong Pan、Stéphane P. Vincent
DOI:10.1016/j.carres.2016.07.010
日期:2016.9
efficient multigram-scale synthesis of methyl 2,3,4,6-tetra-O-benzyl-l-glycero-α-d-manno-heptopyranoside from methyl 2,3,4-tri-O-benzyl-α-d-mannopyranoside is reported. It involves a sequence of Swern oxidation, Grignard addition and Fleming-Tamao reactions. The resulting scaffold was used as a precursor to design a small library of clickable l-heptosides. This study shows that the use of mercuric bistrifluoroacetate
由甲基2,3,4-三-O-苄基-α-d高效合成多克级的甲基2,3,4,6-四-O-苄基-1-甘油-α-d-甘露庚基吡喃糖苷报道了-甘露吡喃糖苷。它涉及一系列的Swern氧化,格利雅(Grignard)加成反应和Fleming-Tamao反应。所得支架用作设计可点击的l-庚糖苷小文库的前体。这项研究表明,需要使用双三氟乙酸汞来加速和清洁地进行Fleming-Tamao氧化,且无副反应。