Chemical and Pharmaceutical Bulletin
Online ISSN : 1347-5223
Print ISSN : 0009-2363
ISSN-L : 0009-2363
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Medicinal Flowers. XXVII. New Flavanone and Chalcone Glycosides, Arenariumosides I, II, III, and IV, and Tumor Necrosis Factor-α Inhibitors from Everlasting, Flowers of Helichrysum arenarium
Toshio MorikawaLi-Bo WangSeikou NakamuraKiyofumi NinomiyaEri YokoyamaHisashi MatsudaOsamu MuraokaLi-Jun WuMasayuki Yoshikawa
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2009 Volume 57 Issue 4 Pages 361-367

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Abstract

The methanolic extract from the flowers of Helichrysum arenarium L. MOENCH was found to show inhibitory effect on tumor necrosis factor-α (TNF-α, 1 ng/ml)-induced cytotoxicity in L929 cells. From the methanolic extract, 50 constituents including four new flavanone and chalcone glycosides named arenariumosides I (1), II (2), III (3), and IV (4) were isolated. The stereostructures of 1—4 were elucidated on the basis of chemical and physicochemical evidence. Among the constituents, naringenin 7-O-β-D-glucopyranoside (7), apigenin 7-O-β-D-glucopyranoside (14), apigenin 7-O-gentiobioside (16), and apigenin 7,4′-di-O-β-D-glucopyranoside (17) significantly inhibited TNF-α-induced cytotoxicity in L929 cells at 30 μM.

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© 2009 The Pharmaceutical Society of Japan
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