ethyl 2-amino-4-(3,4-dimethoxyphenyl)thiophene-3-carboxylate

propyl 2-amino-4-(4-chlorophenyl)thiophene-3-carboxylate

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

propyl 2-amino-4-(4-ethylphenyl)thiophene-3-carboxylate

isopropyl 2-amino-4-(3-methylphenyl)thiophene-3-carboxylate

isopropyl 2-amino-4-(4-ethylphenyl)thiophene-3-carboxylate

isopropyl 2-amino-4-(4-cyclohexylphenyl)thiophene-3-carboxylate

ethyl 2-amino-5-methyl-4-(4-propylphenyl)thiophene-3-carboxylate

propyl 2-amino-4-(2-chlorophenyl)thiophene-3-carboxylate

isopropyl 2-amino-4-(4-sec-butylphenyl)-5-methylthiophene-3-carboxylate