Planta Medica 1992-Apr
Chemical Constituents of the Lichen Ramalina hierrensis.
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The following compounds have been isolated from the lichen RAMALINA HIERRENSIS, collected on savin, and endemic to the Canary Islands: ursolic acid, iso-arborinol acetate, beta-sitosterol, ergosterol peroxide, cerevisterol, (-)-sandaracopimaric acid, parietin, (+)-usnic acid, (+)-iso-usnic acid, divaricatic acid, atranorin, stictic acid, gangaleodin, variolaric acid, montagnetol, and hierridin. The structures of all compounds were elucidated by physical, spectral, and chemical methods.