4,9-Dihydroxy-alpha-lapachone has antitumor-promoting effects, it exhibits significant inhibitory activity against 12-O-tetradecanoylphorbol 13-acetate (TPA)-induced Epstein-Barr virus early antigen (EBV-EA) activation in Raji cells. 4,9-Dihydroxy-alpha-l
16beta,17-Dihydroxy-ent-kaurane-19-oic acid as an anti-HIV principle, it showed significant activity against HIV replication in H9 lymphocyte cells with an EC50 value of 0.8 microgram/mL. It also possesses the activities of decompression and blood viscosi
ent-16-Kaurene-3beta,15beta,18-triol, ent-16-kaurene-3beta,15beta-diol,abbeokutone,and helioscopinolide A possess appreciable anti-allergic activities in RBL-2H3 cells model with IC50 values ranging from 22.5 to 42.2 microM.
Ent-11alpha-Hydroxy-15-oxokaur-16-en-19-oic acid has anti-cancer activity, it induces apoptosis of human malignant cancer cells, it also inhibits hepatocellular carcinoma in vitro and in vivo via stabilizing IkBα.