、
cytidine-5'-monophosphono-N-acetylneuraminic acid 在
α2-6 sialyltransferase from photobacterium damsela 作用下,
以
aq. buffer 为溶剂,
以84%的产率得到2'-azido ethyl 2-acetamido-2-deoxy-β-D-glucopyranosyl-(1→3)-[5-acetamido-3,5-dideoxy-D-glycero-α-D-galacto-2-nonulopyranosylonate-(2-6)]-β-D-galactopyranosyl-(1→4)-2-acetamido-2-deoxy-β-D-glucopyranosyl-(1→3)-[5-acetamido-3,5-dideoxy-D-glycero-α-D-galacto-2-nonulopyranosylonate-(2-6)]-β-D-galactopyranosyl-(1→4)-2-acetamido-2-deoxy-β-D-glucopyranoside