β-Orcinol Metabolites from the Lichen Hypotrachyna revoluta
Open Access
- 11 May 2007
- Vol. 12 (5), 997-1005
- https://doi.org/10.3390/12050997
Abstract
Four new β-orcinol metabolites, hypotrachynic acid (1), deoxystictic acid (2), cryptostictinolide (3) and 8 ́-methylconstictic acid (4) along with the metabolites 8 ́-methylstictic acid (5), 8 ́-methylmenegazziaic acid (6), stictic acid (7), 8 ́-ethylstictic acid (8) and atranorin (9), that have been previously described, were isolated for the first time from the tissue extracts of the lichen Hypotrachyna revoluta (Flörke) Hale. The structures of the new metabolites were elucidated on the basis of extensive spectroscopic analyses. Radical scavenging activity (RSA) of the metabolites isolated in adequate amounts, was evaluated using luminol chemiluminescence and comparison with Trolox®.Keywords
This publication has 16 references indexed in Scilit:
- Radical-scavenging activity of Aegean Sea marine algaeFood Chemistry, 2007
- Antioxidant potential of six pine speciesPhytotherapy Research, 2006
- β-Orcinol depsidones from the lichenUsneasp. from Sri LankaNatural Product Research, 2005
- Antimicrobial, Antiviral and Cytotoxic Activity of New Zealand LichensThe Lichenologist, 1999
- A phytochemical register of New Zealand lichensNew Zealand Journal of Botany, 1997
- Antioxidant activity of depsides and depsidonesPhytochemistry, 1994
- Depsidones from Lobaria pulmonaria and their chemotaxonomic importanceBiochemical Systematics and Ecology, 1994
- ψ-esters of depsidones with a lactole ringPhytochemistry, 1987
- New depsidones from Lobaria oreganaPhytochemistry, 1980
- The ecological role of secondary lichen substancesBiochemical Systematics and Ecology, 1978