D-生物素 、
S-(4-aminobenzyl) 2,3,4,6-tetra-O-benzoyl-β-D-galactopyranosyl-(1,4)-2,3,6-tri-O-benzoyl-1-thio-β-D-glucopyranoside 在
O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以87%的产率得到S-D-biotinoyl-4-aminobenzyl 2,3,4,6-tetra-O-benzoyl-β-D-galactopyranosyl-(1,4)-2,3,6-tri-O-benzoyl-1-thio-β-D-glucopyranoside