diethyl 2-aminoterephthalate

2-methoxyethyl 2-amino-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate

isopropyl 2-amino-5-(anilinocarbonyl)-4-methylthiophene-3-carboxylate

isopropyl 2-amino-5-{[(2-methoxyphenyl)amino]carbonyl}-4-methylthiophene-3-carboxylate

methyl 2-amino-4-(4-butylphenyl)thiophene-3-carboxylate

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

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

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

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

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

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