Chemical constituents from three medicinal plants: Piper renitens, Siparuna guianensis and Alternanthera brasiliana

Abstract

Chemical study of three medicinal plants: from leaves of Piper renitens (Miq.) Yunck, Piperaceae, and Siparuna guianensis Aubl., Siparunaceae, and from flowers of Alternanthera brasiliana (L.) Kuntze, Amaranthaceae, resulted in isolation of nine compounds: three steroids, β-sitosterol, stigmasterol from P. renitens and sitosterol-3-O-β-D-glucopyranoside from A. brasiliana, the diterpene kaurane ent-kauran-16α,17-diol from P. renitens, two derivatives kaempferolmethylether, kumatakenine (kaempferol-3,7-dimethylether) and kaempferol-3,7,3'-trimethylether from S. guianensis and three flavones, crysoeriol (5,7,4'-trihydroxy-3'-methoxyflavone), tricin (5,7,4'-trihydroxy-3',5'-dimethoxyflavone) and 7-O-β-D-glucopyranoside-5,4'-dihydroxy-3'-methoxyflavone from A. brasiliana. Compounds structures were determinate using 1D and 2D 1 H NMR and 13 C spectral data, mass and IR spectra, comparing with literature data.

Ethnobotanical study of medicinal plants by population of Valley of Juruena Region, Legal Amazon, Mato Grosso, Brazil

“…In a study of the essential oil of its leaves, twenty-five compounds were identified (Facundo et al, 2012;Wakabayashi et al, 2010). More recently, identified three flavones (Wakabayashi et al, 2010).…”

Light quality and plant growth regulators influence pigment production in Alternanthera brasiliana calli

“…Moreover, its activity as an antiproliferative, anti-inflammatory, antiedematous and antioxidant, has been reported. It also shows activity against the herpes simplex virus and, recently, anticonvulsant effect (Lagrota et al,1994;Macedo et al, 1999Macedo et al, , 2011Facundo et al, 2012;Andreazza et al, 2013;Schallenberger et al, 2017).…”

Development and validation of an analytical method for quantification of total flavonoids in Alternanthera brasiliana by ultraviolet-visible absorption spectrophotometry

“…Alternanthera brasiliana is used in folk medicine to treat infections and is popularly known as "terramycin", "penicillin" or "benzetacil" (Facundo et al, 2012;Caetano et al, 2002). In relation to its phytochemistry, several constituents have already been isolated or identified.…”