p. 7411 - 7421
(2007/10/03)ethyl 4-(o-carboxyphenyl)-3,5-dimethyl-1H-pyrrole-2-carboxylate
ethyl 4-(o-methoxycarbonylphenyl)-3,5-dimethyl-1H-pyrrole-2-carboxylate
3-(o-carboxyphenyl)pentane-2,4-dione
diazomethane
4-(2-carboxy-phenyl)-3,5-dimethyl-1H-pyrrole-2-carboxylic acid