Abstract
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-17 3-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-diphenyl2-picryl-hydrazyl (DPPH) free radical scavenging assay.
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Da Silva, M. S., Tavares, J. F., Queiroga, K. F., De Fátima Agra, M., Barbosa Filho, J. M., Da Silva Almeida, J. R. G., & Da Silva, S. A. S. (2009). Alkaloids and other constituents from Xylopia langsdorffiana (Annonaceae). Quimica Nova, 32(6), 1566–1570. https://doi.org/10.1590/s0100-40422009000600040
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