A New Lanostane-Type Triterpene from the Branches of Thai Uvaria siamensis
摘要
A new lanostane-type triterpene, uvariaol (1), was isolated from the branches of Thai Uvaria siamensis, along with three known compounds, polycarpol (2), fisetinidol (3), and stigmast-4-en-3-one (4). Their structures were elucidated through extensive spectroscopic analyses and comparison with existing literature. The α-glucosidase inhibitory potential of compounds 1–4 was evaluated. Compound 1 exhibited significant inhibitory activity against α-glucosidase, surpassing the potency of the positive control, with an IC50 value of 30.8 ± 1.5 μM.