5-amino-2-(4-methyl-3-nitrophenyl)-1,3-oxazole-4-carboxamide

methyl 5-[(2-methyl-4-nitro-1H-imidazol-1-yl)methyl]-2-furoate

methyl 1-ethyl-3,6-dimethyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylate

methyl 6-(2-furyl)-3-methyl-1-phenyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylate

methyl 6-(2-furyl)-3-phenylisoxazolo[5,4-b]pyridine-4-carboxylate

ethyl 7-thien-2-ylpyrazolo[1,5-a]pyrimidine-2-carboxylate

methyl 7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine-2-carboxylate

methyl (3-nitro-1H-pyrazol-1-yl)acetate

methyl 1-(2,2-difluoroethyl)-1H-pyrazole-3-carboxylate

methyl 6-cyclopropyl-1-(2-ethoxy-2-oxoethyl)-3-methyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylate

methyl 1-butyl-1H-pyrazole-3-carboxylate