Abstract
Twenty-six known compounds and two new compounds, including a new lignan, (7S*,8R*,7'R*,8'S*)-icariol A2-9-O-ß- xylopyranoside (1), and a new indole alkaloid, hygarine (2), were isolated from the extracts of Hygroryza aristata (Gramineae). The structures of all compounds were elucidated on the basis of NMR spectral analysis. The compounds (-)-epigallocatechin-3-O-gallate (4) and (-)-epicatechin-3-O-gallate (5) possess free radical scavenging activities and compound 1 could inhibit superoxide anion generation and elastase release by fMLP/CB-induced human neutrophils with IC50 values of 19.33 ± 0.86 and 24.14 ± 1.59 μM, respectively.
Original language | English |
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Pages (from-to) | 1917-1927 |
Number of pages | 11 |
Journal | Molecules |
Volume | 16 |
Issue number | 3 |
DOIs | |
State | Published - 03 2011 |
Keywords
- Anti-inflammatory
- Antioxidant
- Gramineae
- Hygarine
- Hygroryza aristata