Anti-inflammatory activity and QSAR studies of compounds isolated from Hyacinthaceae species and Tachiadenus longiflorus Griseb. (Gentianaceae) - du Toit, K; Elgorashi, E E; Malan, S F; Drewes, S E; van Staden, J; Crouch, N R; Mulholland, D A (Bioorg Med Chem, 2005)