2-ethyl-4-(2-aminoethyl)-1-[2'-(t-butoxycarbonyl)biphenyl-4-yl]methylimidazole 、
Ethyl glyoxylate hydrate 在
silica gel 、
chloroform methanol 作用下,
以
四氢呋喃 为溶剂,
反应 18.0h,
以to give ethyl 2-ethyl-3-[2'-(t-butoxycarbonyl)biphenyl-4-yl]methyl-4,5,6,7-tetrahydroimidazo[4,5-c]pyridine-4-carboxylate (5.90 g) as a yellow oil的产率得到ethyl 2-ethyl-3-{2'-(t-butoxycarbonyl)-biphenyl-4-yl}methyl-4,5,6,7-tetrahydroimidazo[4,5-c]-pyridine-4-carboxylate