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J Asian Nat Prod Res. 2013 Sep;15(9):1050-4. doi: 10.1080/10286020.2012.762911. Epub 2013 Jul 22.

A new cycloartane nortriterpenoid from stem and leaf of Quercus variabilis.

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  • 1a School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University , Shenyang , 110016 , China.

Abstract

A new compound 3-acetyloxy-epicycloeucalenol-24-one (1), with 11 known compounds 3α-acetyloxy-4α,14α-dimethyl-9β,19-cycloergost-24-oic acid (2), 3-epicycloeucalenol (3), 3-epicycloeucalenyl-24-one (4), 3-epicycloeucalenyl acetate (5), 4β,14α-dimethyl-5α-ergosta-9β,19-cyclo-24(31)-en-3β-hydroxy-4α-carboxylic acid (6), cycloeucalenone (7), friedelin (8), epifriedelanol (9), lup-20 (29)-en-3β,30-diol (10), betulin (11), lupeol (12), was isolated from the stems and leaves of Quercus variabilis Blume. Seven compounds (1-7) showed anti-inflammatory activity.

PMID:
23869388
DOI:
10.1080/10286020.2012.762911
[PubMed - indexed for MEDLINE]
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