A FLAVONOL COMPOUND FROM <i>Chingia sakayensis</i> (Zeiller) Holtt AND ITS ACTIVITY AS DPPH FREE RADICAL SCAVENGER
oleh: Suyatno Suyatno, Rukmaningsih Rukmaningsih, Noor Cholies Zaini, Motoo Tori
| Format: | Article |
|---|---|
| Diterbitkan: | Department of Chemistry, Universitas Gadjah Mada 2010-06-01 |
Deskripsi
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. Keywords: Chingia sakayensis (Zeiller) Holtt, flavone, kaemferol, DPPH free radical scavenger activity