1-Boc-3-氟-4-氧代吡咯烷

4,6-二氢-1H-吡咯[3,4-C]吡唑-5-甲酸丁酯

tert-butyl 6-bromo-4-oxospiro[3H-chromene-2,3'-pyrrolidine]-1'-carboxylate

tert-butyl 1-phenyl-4,6-dihydropyrrolo[3,4-c]pyrazole-5-carboxylate

tert-butyl 2-cyclopropyl-5,7-dihydropyrrolo[3,4-d]pyrimidine-6-carboxylate