Flavonóides O-glicosilados de Croton campestris St. Hill. (Euphorbiaceae)

  • Santos P
  • Schripsema J
  • Kuster R
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Abstract

RESUMO: Do extrato butanólico de Croton campestris St. Hill. (Euphorbiaceae) foram isolados quatro fl avonóides, todos O-glicosídeos da quercetina. Estas substâncias foram identifi cadas como 3-O-β-D-apiofuranosil-(1→2)-galactopiranosil quercetina (1), 3-O-β-D-galactopiranosil quercetina (hiperina) (2), 3-O-α-L-arabinopiranosil quercetina (guaijaverina) (3) e 3-O-α-L-ramnopiranosil quercetina (quercitrina) (4).O presente trabalho relata a presença destas substâncias pela primeira vez para esta espécie de Croton, cuja elucidação estrutural deu-se por espectroscopia em UV, EM e RMN, incluindo as técnicas bidimensionais: 1 H-1 H (2D NOESY, 2D COSY), 1 H-13 C (2D HETCOR) e 13 C (APT), além de comparações com os dados da literatura. ABSTRACT: " Glycosyl fl avonoids from Croton campestris St. Hill. (Euphorbiaceae) " . Four fl avonoids were isolated from the butanolic extract of the aerial parts of Croton campestris St. Hill. (Euphorbiaceae). These compounds were identifi ed as 3-O-β-D-apiofuranosyl-(1→2)-galactopyranoside quercetin (1), 3-O-β-D-galactopyranoside quercetin (hyperin) (2), 3-O-α-L-arabinopyranoside quercetin (guaijaverin) (3) and 3-O-α-L-ramnopyranoside quercetin (quercitrin) (4). They have been isolated for the fi rst time from Croton campestris. Their structures were elucidated by UV, MS and NMR experiments including 1

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Santos, P. M. L. dos, Schripsema, J., & Kuster, R. M. (2005). Flavonóides O-glicosilados de Croton campestris St. Hill. (Euphorbiaceae). Revista Brasileira de Farmacognosia, 15(4). https://doi.org/10.1590/s0102-695x2005000400011

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