methyl 5-acetamido-4,7,8,9-tetra-O-acetyl-2-(dibenzylphosphityl)-3,5-dideoxy-β-D-glycero-D-galacto-2-nonulopyranosonate 、
2-azido-2-deoxy-3,4-O-isopropylidene-α-D-galacto-pyranosyl NHS 在
三氟甲磺酸三甲基硅酯 作用下,
以
四氢呋喃 为溶剂,
反应 1.0h,
生成 (2R,4S,5R,6R)-4-Acetoxy-5-acetylamino-2-[(3aR,4R,6R,7R,7aR)-7-azido-6-(2,5-dioxo-pyrrolidin-1-yloxy)-2,2-dimethyl-tetrahydro-[1,3]dioxolo[4,5-c]pyran-4-ylmethoxy]-6-((1S,2R)-1,2,3-triacetoxy-propyl)-tetrahydro-pyran-2-carboxylic acid methyl ester 、 (2S,4S,5R,6R)-4-Acetoxy-5-acetylamino-2-[(3aR,4R,6R,7R,7aR)-7-azido-6-(2,5-dioxo-pyrrolidin-1-yloxy)-2,2-dimethyl-tetrahydro-[1,3]dioxolo[4,5-c]pyran-4-ylmethoxy]-6-((1S,2R)-1,2,3-triacetoxy-propyl)-tetrahydro-pyran-2-carboxylic acid methyl ester