1,3,7-TRIMETHYLGUANINE FROM THE LICHEN STEREOCAULON RAMULOSUM
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Rev. Bol. Quim
Abstract
Cinco compuestos fueron aislados del extracto acetónico del Stereocaulon ramulosum, 1,3,7-trimetilguanina (1), acido perlatólico (2), βorcinolcarboxilato de metilo (3), atranorina (4) y galactitol (5). Las estructuras moleculares fueron elucidadas por métodos espectroscópicos de RMN y espectrometría de masas.
Chromatographic fractionation of an acetone extract of the lichen Stereocaulon ramulosum afforded 1,3,7trimethylguanine (1), perlatolic acid (2), methyl β-orcinolcarboxylate (3), atranorin (4) and galactitol (5). The structures were elucidated using NMR spectroscopy and mass spectrometry.
Chromatographic fractionation of an acetone extract of the lichen Stereocaulon ramulosum afforded 1,3,7trimethylguanine (1), perlatolic acid (2), methyl β-orcinolcarboxylate (3), atranorin (4) and galactitol (5). The structures were elucidated using NMR spectroscopy and mass spectrometry.
Description
Vol. 25, No. 1