(1R,2R,4R,6S)-2-hydroxy-4,6-dimethylcyclohexyl 2,3,4-tri-O-benzyl-6-deoxy-α-L-galactopyranoside 、
ethyl 3-O-[(1S)-1-(cyclohexylmethyl)-2-oxo-2-(phenylmethoxy)ethyl]-1-thio-β-D-galactopyranoside 2,4,6-tribenzoate 在
dimethyl(methylthio)sulfonium triflate 作用下,
以
二氯甲烷 为溶剂,
反应 28.0h,
以62%的产率得到{(1R,2R,3S,5R)-2-[(2,3,4-tri-O-benzyl-6-deoxy-α-L-galactopyranosyl)oxy]-3,5-dimethylcyclohex-1-yl} 2,4,6-tri-O-benzoyl-3-O-[(1S)-1-benzyloxycarbonyl-2-cyclohexylethyl]-β-D-galactopyranoside