17β-Hydroxywortmannin
17β-Hydroxywortmannin (Wortmannin-17β-ol) is an orally active inhibitor for phosphatidylinositol-3-kinase (PI-3-kinase) with an IC50 of 0.5 nM, suppresses the osteoclast resorption with an IC50 of 10 nM. 17β-Hydroxywortmannin exhibits antitumor activity.