RESUMO
In this study, we isolated and purified the extracts of the whole plant of Crotalaria sessiliflora L. by column chromatographic. Twelve compounds were isolated and identified as followings: sessiliflorin B (1), quercetin (2), kaempferol (3), soyasapogenol B (4), fernenol (5), neoechinulin A (6), ethyl 4-hydroxybenzoate (7), ethyl caffeate (8), 5,7-dihydroxychromone (9), crotadihydrofuran A (10), butesuperin B (11) and aurantiamide acetate (12). Compound 1 is a new compound, compound 3-12 were isolated from the plant for the first time.
RESUMO
To study the chemical constituents of Cirsium setosum (Willd.) MB., 70% ethanol extract of the aerial parts was subjected to column chromatography. One new phenylpropanoid glycoside, sinapyl alcohol 9-O-(E)-p-coumaroyl-4-O-beta-D-glucopyanoside (1) was isolated, along with three known compounds: lycoperodine-1 (2), apigenin-7-O-(6"-(E)-p-coumaroyl)-beta-D-galactopyranoside (3) and quercetin (4). The structures were elucidated on the basis of spectral and chemical evidence. Compound 2 was obtained from Cirsium genus for the first time, compounds 3 and 4 were obtained from this plant for the first time.
Assuntos
Cirsium , Química , Flavonoides , Química , Glicosídeos , Química , Conformação Molecular , Estrutura Molecular , Componentes Aéreos da Planta , Química , Plantas Medicinais , Química , Quercetina , QuímicaRESUMO
<p><b>OBJECTIVE</b>To study on HPLC fingerprint of Propolis and to control it's quality.</p><p><b>METHOD</b>The chromatographic fingerprints of seven samples from different producing areas were determined by RP-HPLC.</p><p><b>RESULT</b>The chromatograms of Propolis from different producing areas were very similar.</p><p><b>CONCLUSION</b>The quality of Propolis can be controlled by determination the HPLC fingerprint.</p>