1-benzyl-5-(tert-butoxycarbonylamino)-4-oxo-1,4-dihydropyridine-3-carboxylic acid 、 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,
反应 18.0h,
以0.86 g的产率得到ethyl 1-benzyl-5-(1-benzyl-5-(1-benzyl-5-(1-benzyl-5-(1-benzyl-5-(tert-butoxycarbonylamino)-4-oxo-1,4-dihydropyridine-3-carboxamido)-4-oxo-1,4-dihydropyridine-3-carboxamido)-4-oxo-1,4-dihydropyridine-3-carboxamido)-4-oxo-1,4-dihydropyridine-3-carboxamido)-4-oxo-1,4-dihydropyridine-3-carboxylate