2-carboxy-3,5-dimethyl-4-(3'-hydroxypropyl)pyrrole   、                                                                                      
2-carboxy-4-(2'-carbethoxyethyl)-5-formyl-3-methylpyrrole                                                                                                                                                                                                                                                                                                          以12%的产率得到3-[(1Z,4Z,9Z,15Z)-7,17-Bis-(3-hydroxy-propyl)-12-(2-methoxycarbonyl-ethyl)-3,8,13,18-tetramethyl-porphyrin-2-yl]-propionic acid methyl ester