The molecule is a hexacyclic triterpenoid that is D:A-friedooleanan-29-oic acid substituted by a hydroxy group at position 3 and an epoxy group across positions 3 and 24 (the (3beta,20alpha stereoisomer). Isolated from Salacia macrosperma and Tripterygium wilfordii, it exhibits anti-HIV activity. It has a role as a metabolite and a HIV-1 reverse transcriptase inhibitor. It is a hexacyclic triterpenoid, a hydroxy monocarboxylic acid and a cyclic hemiketal. It derives from a hydride of a friedelane.
(1R,4S,5R,8S,11R,13R,14S,17R,18S,21S,24R)-21-hydroxy-5,8,11,14,17,24-hexamethyl-22-oxahexacyclo[19.2.1.01,18.04,17.05,14.08,13]tetracosane-11-carboxylic acid