Six unprecedented 2-(2-phenethyl)chromone dimers from agarwood of Aquilaria filaria.
Fitoterapia
; 175: 105905, 2024 Jun.
Article
em En
| MEDLINE
| ID: mdl-38479616
ABSTRACT
Six new dimeric 2-(2-phenylethyl)chromones (1-6) were successfully isolated from the ethanol extract of agarwood of Aquilaria filaria from Philippines under HPLC-MS guidance. Compounds 1-6 are all dimers formed by linking 5,6,7,8-tetrahydro-2-(2-phenylethyl)chromone and flindersia 2-(2-phenylethyl)chromone via a single ether bond, and the linkage site (C5-O-C8'') of compound 2 is extremely rare. A variety of spectroscopic methods were used to ascertain their structures, including extensive 1D and 2D NMR spectroscopic analysis, HRESIMS, and comparison with literature. The in vitro tyrosinase inhibitory and anti-inflammatory activities of each isolate were assessed. Among these compounds, compound 2 had a tyrosinase inhibition effect with an IC50 value of 27.71 ± 2.60 µM, and compound 4 exhibited moderate inhibition of nitric oxide production in lipopolysaccharide-stimulated RAW264.7 cells with an IC50 value of 35.40 ± 1.04 µM.
Palavras-chave
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Madeira
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Monofenol Mono-Oxigenase
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Thymelaeaceae
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Anti-Inflamatórios
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Óxido Nítrico
Limite:
Animals
País/Região como assunto:
Asia
Idioma:
En
Revista:
Fitoterapia
Ano de publicação:
2024
Tipo de documento:
Article