diethyl[2-(2,3,5-trimethyl-3H-indol-3-yl)ethyl]phosphonate 在
吡啶 、
乙酸酐 作用下,
反应 2.5h,
生成 6-[2-[2-[5-[3-[2-[bis(5-carboxypentoxy)phosphoryl]ethyl]-3,5-dimethyl-1H-indol-2-ylidene]penta-1,3-dienyl]-3,5-dimethylindol-1-ium-3-yl]ethyl-(5-carboxypentoxy)phosphoryl]oxyhexanoic acid