Anti-hepatitis B virus constituents from the stem bark of Streblus asper.
Phytochemistry
; 82: 100-9, 2012 Oct.
Article
en En
| MEDLINE
| ID: mdl-22818524
Seven compounds, (7'S,8'S)-trans-streblusol A, (7'R,8'S)-erythro-streblusol B, (7'S,8'S)-threo-streblusol B, 8'R-streblusol C, streblusquinone, (8R,8'R)-streblusol D, and streblusol E, along with 15 known compounds (8-22) were isolated from the n-butanol-soluble part of the MeOH extract of stem bark of Streblus asper. Their structures were elucidated through application of extensive spectroscopic methods, including ESI-MS and 2D NMR spectroscopy (HMQC and HMBC). The stereochemistry at the chiral centers was determined using CD spectra, as well as analyses of coupling constants and optical rotation data. The isolated lignans and allylbenzene derivatives were evaluated for their anti-HBV activities in vitro using the HBV transfected Hep G2.2.15 cell line. The most active compounds, magnolol and 9-ß-xylopyranosyl-isolariciresinol, exhibited significant anti-HBV activities with IC(50) values of 2.03 and 6.58µM for secretion of HBsAg, with no cytotoxicity, and of 3.76 and 24.86µM for secretion of HBeAg, with no cytotoxicity.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Antivirales
/
Extractos Vegetales
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Virus de la Hepatitis B
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Moraceae
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Corteza de la Planta
Límite:
Humans
Idioma:
En
Revista:
Phytochemistry
Año:
2012
Tipo del documento:
Article
Pais de publicación:
Reino Unido