{2-[(2-{Acetyl-[(2R,3R,4R,5S,6R)-3,4-dihydroxy-6-hydroxymethyl-5-((2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-hydroxymethyl-tetrahydro-pyran-2-yloxy)-tetrahydro-pyran-2-yl]-amino}-ethyl)-methyl-amino]-ethyl}-carbamic acid benzyl ester 在
10percent Pd/C α-2,3-sialyltransferase-CMPNeuAc synthetase 、
氢气 、
sodium cacodylate 、
碳酸氢钠 、 manganese(ll) chloride 作用下,
以
甲醇 、
水 为溶剂,
反应 21.0h,
生成 (2S,4S,5R,6R)-5-acetamido-2-[(2S,3R,4S,5S,6R)-2-[(2R,3S,4R,5R,6R)-6-[acetyl-[2-[2-[[2-(2,5-dioxopyrrol-1-yl)acetyl]amino]ethyl-methylamino]ethyl]amino]-4,5-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-4-hydroxy-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxane-2-carboxylic acid