β-orcinol metabolites from the lichen Hypotrachyna revoluta

Author:
Papadopoulou P., Tzakou O., Vagias C., Kefalas P. & Roussis V.
Year:
2007
Journal:
Molecules
Pages:
12(5): 997-1005
Url:
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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: Hypotrachyna revoluta; Hypotrachynic acid; Deoxystictic acid; Cryptostictinolide; 8΄-Methylconstictic acid; Radical scavenging activity.
Id:
25360
Submitter:
zdenek
Post_time:
Monday, 20 April 2015 16:24