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

Revista Brasileira de Farmacognosia

Braz-Filho, Raimundo¹  Facundo, Valdir A.¹  Silva, Gil V. J. da¹  Militão, Júlio S. L. T.¹  Rodrigues, Rosely V.¹  UFRRJ¹  Universidade Federal de Rondônia, Brazil¹  Azevedo, Mariangela S.¹  Nascimento, Leandro F. do¹  Universidade de São Paulo, Brazil¹ 

关键词: Piper renitens;    Siparuna guianensis;    Alternanthera brasiliana;    ent-kaunare diterpene;    kaempferol-methylether;    flavonoids;   

DOI  :  10.1590/S0102-695X2012005000040

来源: Sociedade Brasileira de Farmacognosia

【 摘 要 】

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 kaempferol-methylether, 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 1H NMR and 13C spectral data, mass and IR spectra, comparing with literature data.

【 授权许可】

Unknown