Inhibitory effects of falconensins on 12-O-tetradecanoylphorbol-13-acetate-induced inflammatory ear edema in mice.

Fifteen derivatives of falconensin were examined for their inhibitory activity against the induction of ear edema in mouse ear by application of 12-O-tetradecanoylphorbol-13-acetate (TPA). It was demonstrated that azaphilonoid falconensins exert inhibitory effects against TPA-induced inflammation in the ears of mice to a comparable degree as moascorubrin and indomethacin, which are known to have antitumor-promoting and anti-inflammatory effects. All compounds tested, except monomethylmitorubrin, inhibited the inflammatory activity induced by TPA.