As part of an ICBG (International Cooperative Biodiversity Groups) project that aims to identify anti-HIV agents from the plants of Vietnam and Laos,13 Vitex leptobotrys H. Hallier (Lamiaceae) was selected for further bioassay-directed fractionation based on positive results in preliminary screening.
Although steroids, chalcones, and an amine were isolated from this plant species,14−16 no prior antiviral pharmacological report on this plant was recorded.