Hi. Duynstee et al., AN EFFICIENT SYNTHESIS OF L)-ALPHA-L-RHAMNOPYRANOSYL]OXYDECANOYL)OXYDECANOIC ACID, A RHAMNOLIPID FROM PSEUDOMONAS-AERUGINOSA, EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, (2), 1998, pp. 303-307
N-iodosuccinimide/triflic acid mediated one-pot two-step glycosylation
of ethyl 2,3,4-tri-O-benzyl-1-thio-alpha-L-rhamnopyranoside (8) with
phenyl 3,4-O-(2,3-dimethoxybutane-2,3-diyl)-1 -thio-alpha-L-rhamnopyra
noside (10b) and phenacyl (R)-3- hydroxydecanoate (13) gave rhamnolipi
d 17. The latter was transformed in five steps into the title compound
2. Esterification of 2 with diazomethane resulted into the correspond
ing methyl ester derivative 1.