ethyl 4-[2-(5-{3-cyano-4-[(1-methylethyl)oxy]phenyl}-1,3,4-thiadiazol-2-yl)-2,4,6,7-tetrahydro-5H-pyrazolo[4,3-c]pyridin-5-yl]butanoate 在
水 、 lithium hydroxide 作用下,
以
四氢呋喃 、
甲醇 为溶剂,
以97%的产率得到4-[2-(5-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,3,4-thiadiazol-2-yl)-4,5,7,8-tetrahydropyrazolo[3,4-d]azepin-6(2H)-yl]butanoic acid lithium salt