Browsing by Author "Hormaechea, Valeria"
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Item Studies on Chilean lichens. XI Secondary metabolites from Antarctic lichens(1989) Quilhot, Wanda; Garbarino, Juan; Piovano, Marisa; Chamy, María Cristina; Gambaro, Vicente; Oyarzún, María Luisa; Vinet, Cindy; Hormaechea, Valeria; Fiedler, PeterThe major secondary metabolites of 17 Antarctic lichen species were studied via macroextraction. The most frequently found compounds were usnic acid and atranorin. Two polysubstituted depsides were isolated from Lecania brialmontii, brialmontins 1 and 2; from Catillaria corymbosa a derivative of hiascic acid was isolated, 2' -0-methylhiascic acid. Peroxyergosterol, a sterol infrequent in lichens, was found in four species.