4-hydrazino-2-(4-hydroxy-cyclohexylamino)-benzonitrile 、
acetic acid 2-(4,4-dimethyl-2,6-dioxo-cyclohexyl)-2-oxo-ethyl ester 在
sodium acetate 作用下,
以
甲醇 、
1,2-二氯乙烷 为溶剂,
以61%的产率得到acetic acid 1-[4-cyano-3-(4-hydroxy-cyclohexylamino)-phenyl]-6,6-dimethyl-4-oxo-4,5,6,7-tetrahydro-1H-indazol-3-ylmethyl ester