仲丁胺 、
ethyl 7-chloro-6-(2-chloroethyl)-3-cyanopyrazolo[1,5-a]pyrimidine-5-carboxylate 以The intended compound was obtained in 95.6% yield in the same manner as in Synthesis Example (5)的产率得到ethyl 8-sec-butyl-3-cyano-6,7-dihydro-8H-pyrrolo[3,2-e]pyrazolo[1,5-a]pyrimidine-5-carboxylate