B- and C-Rings components of phycobilin derivatives were efficiently prepared starting from the corresponding lactones. This synthetic method made it possible to prepare not only phycocyanobilin (PCB), but also PCB derivatives having butanoic acid side chain(s) instead of propanoic one(s), regioselectively monoesterified PCB derivatives at C8 or C12, and regioisomers of PCB with respect to methyl and propanoic acid substituents of B- and C-rings for the first time toward the structure/function analysis of phytochrome.
从相应的内酯开始,高效地制备出了植物
纤维素衍
生物的 B 环和 C 环成分。这种合成方法不仅可以制备植物
花青素(PCB),还可以制备具有
丁酸侧链而非
丙酸侧链的 PCB 衍
生物、C8 或 C12 处的区域选择性单酯化 PCB 衍
生物,以及 PCB 与 B 环和 C 环的甲基和
丙酸取代基的区域异构体,从而首次实现了对植物色素的结构/功能分析。