5-(3,4-dimethyl-5-oxo-1,5-dihydro-pyrrol-2-ylidenemethyl)-3,4-dimethyl-pyrrole-2-carbaldehyde 、
rac-41-<3-(N-5-Dimethylamino-1-naphthyl-sulfonyl-aminomethyl)-phenyl-methyl>-1,32-dioxo-2,3,31,32,4,5-hexahydro-2,2,7,8-tetramethyl-pyrrolo<2,3-c>-dipyrrin-9-(10H)-carbonsaeure-tert-butylester 以51%的产率得到rac-4
1-<3-(N-5-Dimethylamino-1-naphthyl-sulfonyl-aminomethyl)-phenyl-methyl>-2,3-dihydro-2,2,7,8,12,13,17,18-octamethyl-3
2-oxopyrrolo<2,3-c>biladien-b,c-1,19(21H,24H)-dion