乙酸酐 、
生成
α-acetoxy-2-ethyl-4,6,7-tris-(2-methoxycarbonylethyl)-5-methoxycarbonylmethyl-1,3,8-trimethylporphyrin 、 3-[(4Z,10Z,15Z,19E)-20-Acetoxy-18-ethyl-8,12-bis-(2-methoxycarbonyl-ethyl)-7-methoxycarbonylmethyl-3,13,17-trimethyl-22,24-dihydro-porphin-2-yl]-propionic acid methyl ester