3,8-diethyl-2,7-dimethyl-(10H)-dipyrrin-1-one 、 [5-bromomethyl-4-(2-carboxy-ethyl)-3-methyl-pyrrol-2-yl]-[5-bromomethyl-4-(2-carboxy-ethyl)-3-methyl-pyrrol-2-ylidene]-methane; hydrobromide 在
甲醇 作用下,
生成 3,3'-[3,17-diethyl-1,19-bis-(3-ethyl-4-methyl-5-oxo-1,5-dihydro-pyrrol-2-ylidenemethyl)-2,8,12,18-tetramethyl-5,22,23,24-tetrahydro-21
H-bilin-7,13-diyl]-di-propionic acid dimethyl ester