[(3R)-1-[[(2R,3R,4R,5S,6R)-5-hydroxy-6-(hydroxymethyl)-2-phenylmethoxy-4-(2,2,2-trichloroethoxycarbonyloxy)oxan-3-yl]amino]-1-oxotetradecan-3-yl] 2,2,2-trichloroethyl carbonate 、
2-deoxy-4-O-diphenylphosphono-3-O-[(R)-3-tetradecanoyloxytetradecanoyl]-6-O-(2,2,2-trichloro-1,1-dimethylethoxycarbonyl)-2-(2,2,2-trichloroethoxycarbonylamino)-α-D-glucopyranosyl chloride 在
4 A molecular sieve 、
silver trifluoromethanesulfonate 作用下,
以
1,2-二氯乙烷 为溶剂,
以79%的产率得到[(2R,3R,4R,5S,6R)-5-diphenoxyphosphoryloxy-2-[[(2R,3S,4R,5R,6R)-3-hydroxy-6-phenylmethoxy-4-(2,2,2-trichloroethoxycarbonyloxy)-5-[[(3R)-3-(2,2,2-trichloroethoxycarbonyloxy)tetradecanoyl]amino]oxan-2-yl]methoxy]-3-(2,2,2-trichloroethoxycarbonylamino)-6-[(1,1,1-trichloro-2-methylpropan-2-yl)oxycarbonyloxymethyl]oxan-4-yl] (3R)-3-tetradecanoyloxytetradecanoate