• 제목/요약/키워드: flavone

검색결과 199건 처리시간 0.02초

Phytochemical Investigation of the Leaves of Flaveria trinervia

  • Umadevi, S.;Mohanta, G.P.;Balakrishna, K.;Manavalan, R.
    • Natural Product Sciences
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    • 제11권1호
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    • pp.13-15
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    • 2005
  • Phytochemical study of the methanolic extract of Flaveria trinervia (Asteraceae) leaves has led to the isolation of three constituents characterised as 3,5,7,4' tetrahydroxy-6-methoxy flavone (6-methoxy kaempferol), oleanolic acid and ${\beta}-sitosterol-{\beta}-D-glucoside$. The identities of the compounds were confirmed by the physical and spectroscopic data and by comparison with authentic samples.

물봉선의 성분에 관한 연구 (III) (Studies on the Constituents of Impatiens textori (III))

  • 이향이;김종원
    • 생약학회지
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    • 제31권1호
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    • pp.105-108
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    • 2000
  • Impatiens textori Miquel (Balsaminaceae) is an annual plant growing in most parts of Korea. The herb of this plant has been used for the external application of snake poison and the bruise. Previous investigations conducted with the herbs have demonstrated it to contain three flavones and three flavone glycosides. Continuing to previous reports, quercetin, kaempferol and acacetin $7-O-{\beta}-D-glucoside$ were isolated from the herbs of this plant.

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Anti-inflammatory Flavonoids: Modulators of Proinflammatory Gene Expression

  • Kim, Hyun-Pyo;Son, Kun-Ho;Chang, Hyeun-Wook;Kang, Sam-Sik
    • Natural Product Sciences
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    • 제10권1호
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    • pp.1-10
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    • 2004
  • Plant flavonoids possess anti-inflammatory activity in vitro and in vivo. Although the action mechanisms are not fully understood, recent studies have clearly shown that certain flavonoids, especially flavone derivatives, express their anti-inflammatory activity at least in part by modulation of proinflammatory gene expression such as cyclooxygenase-2, inducible nitric oxide synthase and various cytokines. This review summarizes the recent findings of flavonoids modulating expression of proinflammatory molecules.

권백의 Flavonoid 성분 (Flavonoid Constituents of Selaginella tamariscina)

  • 신동인;김진웅
    • 생약학회지
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    • 제22권4호
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    • pp.207-210
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    • 1991
  • From the chloroform and n-butanol extracts of Selaginella tamariscina, three biflavonoids were isolated by chromatographic separation. Structures of these compounds were determined as cryptomerin B, amentoflavone and isocryptomerin by spectroscopic analysis, and amentoflavone was further identified by comparison with the authentic sample. This is the first report of isolation of cryptomerin B from Selaginellaceae.

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Flavonoids from Cirsium rhinoceros

  • Lee, Hwan-Bae;Kwak, Jong-Hwan;Zee, Ok-Pyo;Yoo, Seung-Jo
    • Archives of Pharmacal Research
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    • 제17권4호
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    • pp.273-277
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    • 1994
  • Six flavonoids were isolated from the aerial parts of Cirsium flavonoids were identified as apigenin, luteolin, $pectolinarigenin-7-O-{\betha}-D-glucopyranoside$, linarin, pectolinarin and $hispidulin-7-O-{\alpha}-L-rhamonopyranosyl-(1{\rightarrow}2)-{\betha}-D-glucopyranoside$ on the basis of chemical and spctral evidence.

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가을강아지풀의 C-Glycosylflavone 성분 (C-Glycosylflavonoids from the Whole Plants of Setaria faberi Herrmann)

  • 김대근
    • 생약학회지
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    • 제47권3호
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    • pp.222-225
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    • 2016
  • Four flavone compounds were isolated from the whole plants of Setaria faberi Herrmann (Gramineae) through repeated column chromatography. Their chemical structures were elucidated as tricin (1), and three C-glycosylflavone, 2"-O-rhamnosylvitexin (2), 2"-O-rhamnosylscoparin (3), and 2"-O-rhamnosylorientin (4), respectively, by spectroscopic analysis. These compounds were isolated for the first time from this plant.