Additional Antiprotozoal Constituents from Cuphea pinetorum, a Plant Used in Mayan Traditional Medicine to Treat Diarrhoea

Tipo de material: Texto

TextoSeries ; Phytotherapy Research, 19(8), p.725-727, 2005Trabajos contenidos:

Calzada, F

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Resumen: In addition to kaempferol and quercetin already found in the roots from Cuphea pinetorum, bioassay-guided fractionation of the crude extract of the aerial part of this species gave four flavonoid glycosides, quercetin-3- O-á-rhamnopyranoside, luteolin-7-O-â -D-glucopyranoside, apigenin-7-O-á-L-rhamnopyranoside and apigenin- 7-O-â -D-glucopyranoside, as well as squalen and â -sitosterol. In vitro antiamoebic and antigiardial activities of isolated compounds indicated that kaempferol is the principal antiprotozoal agent in C. pinetorum. Based on finding this antiprotozoal inhibitor, flavonoids were studied in order to elucidate structure-activity relationships. These data suggest that kaempferol may play an important role in antidiarrhoeal activity of C. pinetorum.

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In addition to kaempferol and quercetin already found in the roots from Cuphea pinetorum, bioassay-guided fractionation of the crude extract of the aerial part of this species gave four flavonoid glycosides, quercetin-3- O-á-rhamnopyranoside, luteolin-7-O-â -D-glucopyranoside, apigenin-7-O-á-L-rhamnopyranoside and apigenin- 7-O-â -D-glucopyranoside, as well as squalen and â -sitosterol. In vitro antiamoebic and antigiardial activities of isolated compounds indicated that kaempferol is the principal antiprotozoal agent in C. pinetorum. Based on finding this antiprotozoal inhibitor, flavonoids were studied in order to elucidate structure-activity relationships. These data suggest that kaempferol may play an important role in antidiarrhoeal activity of C. pinetorum.

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