Kaurane-3,16,17-triol,ent-kaurane-3-oxo-16α,17-diol,and ent-16α,17-dihydroxyatisan- 3-one are three kinds of toxic diterpenoids isolated from the roots of genus Euphorbia.
Koaburaside exhibits antioxidant activity with an IC50 value of 9.0μM, it shows weak inhibitory activity against influenza A neuraminidase. Koaburaside may have anti-allergic inflammatory activity, it can suppress histamine release from mast cells.
Quercetin 3-O-methyl ether is a potent phosphodiesterase (PDE)3 4 inhibitor, it has potential for treating asthma against ovalbumin-induced airway hyperresponsiveness.
AKaurane-3,16,17-triol,ent-kaurane-3-oxo-16α,17-diol,and ent-16α,17-dihydroxyatisan-3-one are three kinds of toxic diterpenoids isolated from the roots of genus Euphorbia.