A composition comprising 2alpha-hydroxy-oleanolic acid isolated from various natural materials is provided to show excellent thrombin inhibition activity for efficiently inhibiting thrombosis, and prevent and treat thrombus such as ischemic stroke and cerebral hemorrhage through blood circulation improvement. ...
The source of raw materials of the natural high-purity (2alpha, 3beta)2,3-dyhydroxy oleanolic-12-alkene-28-acid is rich, cheap and easy to get, the extracting, separating and purifying processes are simple, economic, and environmentally friendly, the yield is high, and all organic solvents...