Anti-sickling Activity of Ursolic Acid Isolated from the Leaves of Ocimum gratissimum L. (Lamiaceae).

The present study reports in vitro anti-sickling activity and phytochemical analyses of the leaves of Ocimum gratissimum. Biological testing revealed that the plant extracts possess antisickling effects. The combination of spectroscopic techniques: 1D-NMR, 2D-NMR and MS revealed that ursolic acid is the major biologically active compound of O.