Alcaloides e outros constituintes de Xylopia langsdorffiana (Annonaceae) Alkaloids and other constituents from Xylopia langsdorffiana (Annonaceae)

Alcaloides e outros constituintes de Xylopia langsdorffiana (Annonaceae) Alkaloids and other constituents from 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,...

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Veröffentlicht in:Química nova 2009-01, Vol.32 (6), p.1566-1570
Hauptverfasser: Marcelo Sobral da Silva, Josean Fechine Tavares, Karine Formiga Queiroga, Maria de Fátima Agra, José Maria Barbosa Filho, Jackson Roberto Guedes da Silva Almeida, Sâmia Andrícia Souza da Silva
Format: Artikel
Sprache:eng
Schlagworte:
alkaloids
atisane diterpene
Xylopia langsdorffiana
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Zusammenfassung: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.
ISSN:0100-4042
1678-7064
DOI:10.1590/S0100-40422009000600040