Five New Furostanol Glycosides from the Fruits of Tribulus terrestris with NO Production Inhibitory Activity.
Phan Van KiemNguyen Van QuocBui Huu TaiPham Hai YenNguyen Huy HoangDan Thi Thuy HangPhan Thi Thanh HuongNgo Anh BangDuong Thi DungDo Thi TrangLe Duc GiangPublished in: Chemistry & biodiversity (2024)
Eight furostanol glycosides including five undescribed compounds, named tribufurostanosides A-E (1-5), and three known ones (6-8) were isolated from the fruits of Tribulus terrestris L. Their chemical structures were determined by the IR, HR-ESI-MS, 1D-, and 2D-NMR spectra. Furostanols 1-8 significantly inhibited nitric oxide production in LPS activated RAW 264.7 cells with IC 50 values ranging from 14.2 to 64.7 μM, compared to that of the positive control compound, dexamethazone (IC 50 13.6 μM).