“…Recently in 2021, six known compounds including aristolactam AII 43, aristolactam BI 78, velutinam 46 and griffithinam 99 were isolated from the twigs of Uvaria grandiflora Roxb. 68 Three aristolactams, aristolactam AII 43, aristolactam BI 78 and griffithinam 99 were found to be inactive in terms of their antioxidant activity, while the compound velutinam 46 showed remarkable antioxidant properties in the DPPH radical scavenging assay (IC 50 = 240.1 AE 6.5 mg mL À1 ). Furthermore, velutinam 46 and griffithinam 99 were proposed as suitable chemotaxonomic markers for plants in the genus Uvaria (Fig.…”