Alcaloides e outros constituintes de Xylopia langsdorffiana (Annonaceae)

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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Bibliographic Details
Main Authors: Silva,Marcelo Sobral da, Tavares,Josean Fechine, Queiroga,Karine Formiga, Agra,Maria de Fátima, Barbosa Filho,José Maria, Almeida,Jackson Roberto Guedes da Silva, Silva,Sâmia Andrícia Souza da
Format: Digital revista
Language:Portuguese
Published: Sociedade Brasileira de Química 2009
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422009000600040
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422009000600040

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