[4-(α-D-mannopyranosyloxy)phenyl]acetic acid 、
S-[3-(α-D-mannopyranosyloxy)propyl]-L-cysteine ethyl ester 在
N,N-二异丙基乙胺 、 Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以59%的产率得到N-{[4-(α-D-mannopyranosyloxy)phenyl]acetyl}-S-[3-(α-D-mannopyranosyloxy)propyl]-L-cysteine ethyl ester