Neolignan and monoterpene glycoside from the seeds of Pharbitis nil
- Source:
- Phytochemistry letters 2017 v.20 pp. 98-101
- ISSN:
- 1874-3900
- Subject:
- Ipomoea nil, anti-inflammatory activity, chemical structure, cytotoxicity, ethanol, glycosides, inhibitory concentration 50, lignans, lipopolysaccharides, mice, monoterpenoids, nitric oxide, nuclear magnetic resonance spectroscopy, seeds, spectral analysis
- Abstract:
- Phytochemical investigation of an EtOH extract of Pharbitis nil seeds (Convolvulaceae) resulted in the isolation and identification of a new neolignan, 7R,8S-threo-dihydroxydehydrodiconiferyl alcohol (1), and a new monoterpene glycoside, (3Z,7S)-7-hydroxy-3,7-dimethyl-3,8-octadienyl-β-d-glucopyranoside (2), together with a known compound, ethyl α-l-arabinofuranoside (3). The chemical structures of these compounds were unambiguously determined using physical data, HR-ESI–MS and spectroscopic evidence, including 1D and 2D NMR experiments. The anti-inflammatory activities of the isolates were evaluated by estimating the inhibition of nitric oxide (NO) production. Compounds 1 and 2 reduced NO levels in lipopolysaccharide (LPS)-stimulated murine microglial BV-2 cells. In addition, compound 2 showed weak cytotoxicity against the HCT-15 cell line with an IC50 value of 28.6μM.
- Agid:
- 5674748
- https://doi.org/10.1016/j.phytol.2017.04.019