Antioxidant and Lipophilic Constituents ofTinospora crispa
- 1 June 1998
- journal article
- research article
- Published by Georg Thieme Verlag KG in Planta Medica
- Vol. 64 (05) , 393-396
- https://doi.org/10.1055/s-2006-957466
Abstract
TLC autographic assays revealed in the CH2Cl2 extract of Tinospora crispa Miers (Menispermaceae) the presence of three compounds exhibiting antioxidant and radical scavenging properties towards β-carotene and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical. They were isolated and identified as N-cis-feruloyltyramine (4), (N-trans-feruloyltyramine (6) and secoisolariciresinol (5). When tested in dilution assays on the reduction of the DPPH radical, these 3 compounds proved to be more active than the synthetic antioxidant butylhydroxytoluene (BHT). Further investigation of the CH2Cl2 extract led to the isolation of vanillin, syringin, the alkaloid N-formylnornuciferin and the diterpene derivatives borapetosides B and C. In addition, a LC/UV/MS analysis enabled the on-line identification of borapetoside F and N-formylannonain.Keywords
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