dimethyl 3,17-diethyl-1,10,19,21,23,24-hexahydro-2,7,13,18-tetramethyl-1,19-dioxobilin-8,12-dipentanoate 在
sodium hydroxide 作用下,
以
四氢呋喃 为溶剂,
反应 5.0h,
以95%的产率得到3,17-diethyl-1,10,19,21,23,24-hexahydro-2,7,13,18-tetramethyl-1,19-dioxobilin-8,12-dipentanoic acid