An Efficient Synthesis of (R)-3-{(R)-3-[2-O-(α-L-Rhamnopyranosyl)- α-L-rhamnopyranosyl] oxydecanoyl}oxydecanoic Acid, a Rhamnolipid fromPseudomonas Aeruginosa
作者:Howard I. Duynstee、Michiel J. van Vliet、Gijsbert A. van der Marel、Jacques H. van Boom
DOI:10.1002/(sici)1099-0690(199802)1998:2<303::aid-ejoc303>3.0.co;2-u
日期:1998.2
N-iodosuccinimide/triflic acid mediated one-pot two-step glycosylation of ethyl 2,3,4-tri-O-benzyl-1-thio-α-L-rhamnopyranoside (8) with phenyl 3,4-O-(2,3-dimethoxybutane-2,3-diyl)-1-thio-α-L-rhamnopyranoside (10b) and phenacyl (R)-3-hydroxydecanoate (13) gave rhamnolipid 17. The latter was transformed in five steps into the title compound 2. Esterification of 2 with diazomethane resulted into the corresponding
N-碘代琥珀酰亚胺/三氟甲磺酸介导的 2,3,4-tri-O-benzyl-1-thio-α-L-rhamnopyranoside (8) 与苯基 3,4-O-(2) 的一锅两步糖基化,3-二甲氧基丁烷-2,3-二基)-1-硫代-α-L-吡喃鼠李糖苷(10b)和苯甲酰(R)-3-羟基癸酸酯(13)得到鼠李糖脂17。后者分五步转化为标题化合物2。2与重氮甲烷的酯化产生相应的甲酯衍生物1。