Oleanonic acid (3-Oxooleanolic acid) is a triterpenoid, inhibits infection by HIV-1 in in vitro infected PBMC, naturally infected PBMC and monocyte/macrophages with EC50 of 22.7 mM, 24.6 mM and 57.4 mM, respectively.
[1]. Giner-Larza EM et al.Oleanonic acid, a 3-oxotriterpene from Pistacia, inhibits leukotriene synthesis and has anti-inflammatory activity.Eur J Pharmacol.Sep 28;428(1):137-43.doi:10.1016/S0014-2999(01)01290-0(2001) [2]. Fabio Mengoni.Anti-HIV Activity of Oleanolic Acid on Infected Human Mononuclear Cells.Planta Med 68(2): 111-114.DOI: 10.1055/s-2002-20256(2002)