Estudio de líquenes chilenos. XIX. Investigaciones de metabolitos secundarios en líquenes antárticos
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Date
1993
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Abstract
Se presentan los resultados de las macro extracciones de los metabolitos secundarios de 28 especies liquénicas recolectadas en las islas Shetland del Sur. Se analiza la heterogeneidad estructural y los rendimientos de los 33 compuestos aisladas entre ellos 2 nuevos dépsidos y tridépsidas, y sus relaciones fotoquímicas. Se confirma el carácter de producto natural del peroxiergosterol mediante análisis in situ de 29 especies y su alta frecuencia podría ser consecuencia de la radiación ultravioleta.
Results of secondary metabolites macroestraction from 29 lichen species, collected on South Shetland Islands, are presented. Structural heterogeneity and yields of the 33 lichen compounds isolated is analysed, as well as their relations with photochemical aspects. Among them 2 depsides and 1 tripside were obtained for the first time. The natural product character of ergosterol peroxide is confirmed by means of an in situ analysis af 29 species its high frequency might be a consequence of the ultraviolet radiation increase.
Results of secondary metabolites macroestraction from 29 lichen species, collected on South Shetland Islands, are presented. Structural heterogeneity and yields of the 33 lichen compounds isolated is analysed, as well as their relations with photochemical aspects. Among them 2 depsides and 1 tripside were obtained for the first time. The natural product character of ergosterol peroxide is confirmed by means of an in situ analysis af 29 species its high frequency might be a consequence of the ultraviolet radiation increase.
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Keywords
Líquenes, Peroxiergosterol
Citation
Serie Científica, nº 43, pp. 73-79, 1993