1. Triterpenoids
2. J. D. Connolly and K. H.Overton , The Triterpenoids , in Chemistry of Terpenes and Terpenoids , ed. A. A. Newman , Academic Press , New York , 1972 , pp. 207–287
3. K. Nakanishi and S.Ito , Biosynthesis of oleanane and ursane triterpenes in tissue culture of Isodon japonicas , in Natural Products Chemistry , ed. K. Nakanishi , T. Goto , S. Ito , S. Natori and S. Nozoe , Kodansha , Tokyo , 1983 , vol. 3 , pp. 185–187
4. New enone derivatives of oleanolic acid and ursolic acid as inhibitors of nitric oxide production in mouse macrophages
5. New Synthetic Triterpenoids: Potent Agents for Prevention and Treatment of Tissue Injury Caused by Inflammatory and Oxidative Stress