A FLAVONOL COMPOUND FROM Chingia sakayensis (Zeiller) Holtt AND ITS ACTIVITY AS DPPH FREE RADICAL SCAVENGER

Suyatno Suyatno(1*), Rukmaningsih Rukmaningsih(2), Noor Cholies Zaini(3), Motoo Tori(4)
(1) Jurusan Kimia FMIlPA, Universitas Negeri Surabaya (UNESA), Surabaya
(2) Fakultas Farmasi Universitas Airlangga, Surabaya
(3) Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho
(4) Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho
(*) Corresponding Author
Abstract
It has been separated a flavonol 3,5,7,4'-tetrahydroxy flavone (kaemferol) from the methanol extract partitioned by ethyl acetate of the leaves of the fern Chingia sakayensis (Zeiller) Holtt. This was obtained as yellow crystals with m.p. 271-273oC. Characterization of its molecular structure was carried out by spectroscopic methods (UV, IR, 1H-NMR, HMQC, HMBC, 13C-NMR and FABMS). Kaemferol indicated the DPPH free radical scavenger activity in TLC autography.
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Indonesian Journal of Chemistry (ISSN 1411-9420 /e-ISSN 2460-1578) - Chemistry Department, Universitas Gadjah Mada, Indonesia.