omega,omega'-Urea-and-dithioacetal-derivatives of hypericin

摘要

An omega,omega'-disubstituted hypericin derivative bearing two dicyclohexylurea moieties separated by propionyl chains from the chromophore and an omega,omega'-dithioacetal of hypericin were prepared.Both showed excellent production of oxidizing species comparable to hypericin when irradiated with appropriate light as shown by the photodestruction of bilirubin IX alpha.