ethyl 4-oxo-2-((4-[(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)oxymethyl]-1H-1,2,3-triazol-1-yl)methyl)-3,5,6,8-tetrahydropyrido[4',3':4,5]thieno[2,3-d]pyrimidine-7(4H)-carboxylate 、
3-溴丙炔 在
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以64%的产率得到ethyl 4-oxo-3-(2-propynyl)-2-((4-[(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)oxymethyl]-1H-1,2,3-triazol-1-yl)methyl)-3,5,6,8-tetrahydropyrido[4',3':4,5]thieno[2,3-d]pyrimidine-7(4H)-carboxylate