Alcaloides e outros constituintes de Xylopia langsdorffiana (Annonaceae)
The phytochemical investigation of Xylopia langsdorffiana led to the isolation of corytenchine, xylopinine, discretamine, xylopine, ent-atisan-16α-hydroxy-18-oic acid, 13² (S) hydroxy-17³-ethoxyphaephorbide and quercetin-3-α-rhamnoside. Their structures were assigned based on spectroscopic analyses, including two-dimensional NMR techniques. Antioxidant activities of discretamine were measured using the 1,2-diphenyl- 2-picryl-hydrazyl (DPPH) free radical scavenging assay.
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Main Authors: | , , , , , , |
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Format: | Digital revista |
Language: | Portuguese |
Published: |
Sociedade Brasileira de Química
2009
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Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422009000600040 |
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