Bioactive triterpenoids from Atriplex lasiantha.

Chromatographic purification of the ethyl acetate soluble fraction from the methanolic extract ofAtriplex lasianthayielded a new triterpenoid, 7β,15α,16β-trihydroxyolean-12-ene-28,30-dioic acid-3-O-β-d-xylopyranoside (1), along with two known triterpenoids, rotundifolioside I (2) and corchorusin B (3). Structures of the compounds1–3were elucidated through sophisticated NMR studies and high resolution mass spectrometry. The three isolates (1–3) were evaluated for antibacterial, antioxidant, and antiurease activities. Compound2exhibited the best antibacterial activity againstEscherichiacoliwith IC50value of 66.25 μg/ml, whereas, all the tested compounds exhibited antioxidant (IC50values of 68.7–75.4 μg/ml) and antiurease (IC50values of 25.5–49.3 μg/ml) activities, respectively. [ABSTRACT FROM PUBLISHER]