4-(2-Methoxycarbonyl-ethyl)-3-methyl-5-trichloromethyl-1H-pyrrole-2-carboxylic acid benzyl ester

benzyl 6-(5-(tert-butoxycarbonyl)-3-ethyl-4-methyl-1H-pyrrol-2-yl)-3-methyl-1,4,5,6-tetrahydrocyclopenta[b]pyrrole-2-carboxylate

1H-Pyrrole-3-propanoic acid, 4-methyl-5-[(phenylmethoxy)carbonyl]-

benzyl 6-hydroxy-3-methyl-1,4,5,6-tetrahydrocyclopenta[b]pyrrole-2-carboxylate

benzyl 3-methyl-6-oxo-1,4,5,6-tetrahydrocyclopenta[b]pyrrole-2-carboxylate

6-(5-tert-Butoxycarbonyl-3-ethyl-4-methyl-1H-pyrrol-2-yl)-3-methyl-1,4,5,6-tetrahydro-cyclopenta[b]pyrrole-2-carboxylic acid