p. 1925 - 1936
(2007/10/02)4-ethyl-3,5-dimethylpyrrole-2-carbaldehyde
benzyl 4-ethyl-3,5-dimethylpyrrole-2-carboxylate
2-(tert-Butoxycarbonyl)-3-ethyl-4-methylpyrrole-5-carboxylic acid
benzyl 5'-t-butoxycarbonyl-3,4'-diethyl-4,3'-dimethyl-2,2'-dipyrrylmethane-5-carboxylate
5'-(tert-butoxy-carbonyl)-3,4'-diethyl-3',4-dimethylpyrromethane-5-carboxylic acid