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DOI: 10.1055/a-0953-5984
Phytochemistry and Antioxidant Activity of Aerial Parts of Phagnalon sordidum L.[1]
Publication History
received 15 February 2019
revised 06 June 2019
accepted 07 June 2019
Publication Date:
02 July 2019 (online)


Abstract
One new natural monoterpene, 5-O-β-d-glucopyranosyl-2-hydroxy-p-cymene (1), and 11 known compounds were isolated through a biologically oriented approach from the aerial parts of Phagnalon sordidum L. The most active extract and fractions were selected using 3 complementary antioxidant activity assays. Results and the different methods were compared by relative antioxidant capacity index. In addition, the most active extract of P. sordidum was subjected to liquid chromatography coupled with electrospray ionization hybrid linear ion trap quadrupole Orbitrap mass spectrometry to quantify secondary metabolites. Antioxidant activities of ethyl acetate extract, and purified 3,4-dihydroxyacetophenone (3) and nebrodenside A (7) were demonstrated by in vitro cell free model assays, and their protective effect against H2O2-induced oxidative stress in a HepG2 (human hepatocellular carcinoma) cell line was established.
Key words
Phagnalon sordidum - Asteraceae - phenolic derivatives - antioxidant activity - mass spectrometry1 Dedicated to Professor Dr. Cosimo Pizza on his 70th birthday in recognition of his outstanding contribution to natural product research.
Supporting Information
- Supporting Information
1H NMR, HSQC, HMBC, 1D-TOCSY, and HRESIMS spectra of compound 1, the LC–MS profile of the EtOAc extract, and antioxidant activities of P. sordidum extracts, fractions, and pure compounds are available as Supporting Information.