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
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
Synthesis of methyl 3-[3-(2-O-α-L-rhamnopyranosyl-α-L-rhamnopyranosyloxy)decanoyloxy]decanoate, a rhamnolipid from Pseudomonas aeruginosa
作者:Pieter Westerduin、Paul E. de Haan、Michel J. Dees、Jacques H. van Boom
DOI:10.1016/0008-6215(88)80077-6
日期:1988.9
Abstract Condensation of (3 R )-3-levulinoyloxydecanoic acid ( 16 ) with methyl (3 R )-3-hydroxydecanoate ( 13 ) afforded, after selective delevulinoylation, methyl (3 R )-3-[(3 R )-3-hydroxydecanolyloxy]decanoate ( 18 ). Boron trifluoride etherate-promoted coupling of 3,4-di- O -benzyl-2- O -chloroacetyl-α- l -rhamnosyl fluoride ( 11 ) with 18 yielded exclusively an α-glycoside 19 , which, after removal