Anti-inflammatory and Membrane-stabilizing Stigmastane Steroids from Alchornea floribunda Leaves - Okoye, Festus B. C.; Osadebe, Patience O.; Proksch, Peter; Edrada-Ebel, Ru Angelie; Nworu, Chukwuemeka S.; Esimone, Charles O. (Planta Medica, 2010)