Abstract
The phytochemical investigation of Sigmatanthus trifoliatus Huber ex Emmerich (Rutaceae) allowed the isolation and identification of the coumarins seselin, osthol, coumurrayin and braylin, besides the furoquinoline alkaloids evolitrine, dictamnine, γ-fagarine and skimmianine. Their chemical structures were determined based on MS, NMR analyses, and supported by comparison with those reported in the literature. The essential oils composition of leaves, roots, and trunk were also analyzed, showing the compounds b-Caryophyllene (33.2%), germacrene-D (28.1%) and bornyl acetate (14.7%) as main components, respectively. The chemotaxonomic significance of the isolated compounds was discussed.
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