Benzyl 5-tert-Butoxycarbonyl-4-(2-methoxycarbonylethyl)-1,3-dimethylpyrrole-2-carboxylate

benzyl 3,5-bis(2-chloroethyl)-1-(2-(methoxycarbonyl)ethyl)-1',2,4,6-tetramethyltripyrrin-a-6'-carboxylate hydrobromide

tert-Butyl 5-Formyl-3-(2-methoxycarbonylethyl)-1,4-dimethylpyrrole-2-carboxylate