1-[1'-(6-cyano-2,4-dimethyl-pyridine-3-carbonyl)-4'-methyl-[1,4']bipiperidinyl-4-yl]-3-methoxy-1-thiophen-3-ylmethyl-urea 在
甲醇 、
sodium hydroxide 、
水 作用下,
反应 2.0h,
以54%的产率得到5-[4-(3-methoxy-1-thiophen-3-ylmethyl-ureido)-4'-methyl-[1,4']bipiperidinyl-1'-carbonyl]-4,6-dimethyl-pyridine-2-carboxylic acid