methyl O-(methyl 5-acetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-D-glycero-α-D-galacto-2-nonulopyranosylonate)-(2->3)-2,4,6-tri-O-benzoyl-1-thio-β-D-galactopyranoside 、
(2R,3R,4R,5S)-5-Acetylamino-2-benzyloxymethyl-3-hydroxy-4-((2S,3S,4R,5R,6S)-3,4,5-tris-benzyloxy-6-methyl-tetrahydro-pyran-2-yloxy)-piperidine-1-carboxylic acid benzyl ester 在
N-碘代丁二酰亚胺 、
三氟甲磺酸 、 4 A molecular sieve 作用下,
以
二氯甲烷 为溶剂,
以40%的产率得到O-(methyl 5-acetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-D-glycero-α-D-galacto-2-nonulopyranosylonate)-(2->3)-O-(2,4,6-tri-O-benzoyl-β-D-galactopyranosyl)-(1->4)-O-<(2,3,4-tri-O-benzyl-α-L-fucopyranosyl)-(1->3)>-2-acetamido-6-O-benzyl...