ethyl 4-amino-2-(2-ethoxy-2-oxoethyl)-5H-pyrrolo[2,3-d]pyrimidine-7(6H)-carboxylate

ethyl 5-amino-4-cyano-2,3-dihydropyrrole-1-carboxylate

(7-溴-1-乙基-1H-咪唑并[4,5-c]吡啶-2-基)乙腈

ethyl 2-amino-4-(4-hydroxyphenyl)thiophene-3-carboxylate

ethyl 2-amino-4-(3-hydroxyphenyl)thiophene-3-carboxylate