Journal of the Brazilian Chemical Society
Journal of the Brazilian Chemical Society
4 years ago

A New Isoflavone and Other Constituents from Roots of Clitoria guianensis

A New Isoflavone and Other Constituents from Roots of <em>Clitoria guianensis</em>
Camila Cunha, Susana Siebeneichler, Isabele Nascimento, Juliana Holzbach
A new isoflavone named pratensein-7-O-β-D-rutinoside [(-)-7-O-α-L-rhamnopyranosyl-(1→6)-β-D-glucopyranosyl-5,3'-dihydroxy-4'-methoxyisoflavone] and the known compounds biochanin A-7-O-β-D-rutinoside, 6-deoxyclitoriacetal 11-O-β-D-glucopyranoside, 6-deoxyclitoriacetal, (2S)-naringenin-6-C-β-D-glucopyranoside, (2R)-naringenin-6-C-β-D-glucopyranoside, tachioside, and koaburaside were isolated from the roots of Clitoria guianensis (Aubl.) Benth var. guianensis (Fabaceae), a subshrub found in the Brazilian Cerrado biome. The structures of the compounds were identified by physical and spectroscopic data measurements (specific rotation ([α]D), circular dichroism (CD), ultraviolet (UV), infrared (IR), 1D and 2D nuclear magnetic resonance (NMR), and mass spectrometry (MS)). The EtOAc fraction of the roots exhibited high toxicity against Artemia salina with median lethal dose (LD50) value of 8.53 mg L-1.

Publisher URL: http://www.scielo.br/scielo.php

Open URL: https://doi.org/10.21577/0103-5053.20200061

DOI: 10.21577/0103-5053.20200061

Open access
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