p. 724 - 726
(1985)p. 1925 - 1936
(2007/10/02)5-chlorocarbonyl-4-ethyl-3-methyl-pyrrole-2-carboxylic acid benzyl ester
benzyl 3-methyl-4-ethyl-5-t-butyloxycarbonyl-pyrrole-2-carboxylate
2,7,13-triethyl-3,8,12,14-tetramethyl-5,16-dihydro-15H-tripyrrine-1-carboxylic acid tert-butyl ester
5'-(tert-butoxy-carbonyl)-3,4'-diethyl-3',4-dimethylpyrromethane-5-carboxylic acid
acetylacetone