Prenylated xanthones from Hypericum ascyron

  title={Prenylated xanthones from Hypericum ascyron},
  author={Waka Hashida and Naonobu Tanaka and Yoshihisa Takaishi},
  journal={Journal of Natural Medicines},
Three new prenylated xanthones, 1,3,5-trihydroxy-6,7-[2′-(1-methylethenyl)-dihydrofurano]-xanthone (1), 1,3,5-trihydroxy-6,7-[2′-(1-hydroxy-1-methylethyl)-dihydrofurano]-xanthone (2), and 1,3,5-trihydroxy-6-O-prenyl-xanthone (3), together with eight known compounds were isolated from the leaves of Hypericum ascyron. Compound 3 has an O-prenyl moiety, and therefore represents the first reported xanthone to have an O-prenyl moiety from genus Hypericum. The structures of the isolated compounds… CONTINUE READING