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Abstract
Five flavonol glycosides characterised as kaempferide 3-O-(2″,3″-diacetylglucoside), kaempferide 3-O-(2″-O-galloylrhamnoside), kaempferide 3-O-(2″-O-galloylrutinoside)-7-O-α-rhamnoside, kaempferol 3-O-[β-glucosyl-(1 → 2)]-[α-rhamnosyl-(1 → 6)]-β-glucoside-7-O-α-rhamnoside and kaempferol 3-O-[α-rhamnosyl-(1 → 2)]-[α-rhamnosyl-(1 → 4)]-β-glucoside-7-O-α-rhamnoside together with benzoic acid 4-O-β-glucoside, benzoic acid 4-O-α-rhamnosyl-(1 → 2)-β-glucoside and benzaldehyde 4-O-β-glucoside have been isolated from methanolic extract of Moringa oleifera leaves. Also obtained from the same extract were known compounds, kaempferol 3-O-α-rhamnoside, kaempferol, syringic acid, gallic acid, rutin and quercetin 3-O-β-glucoside. Their structures were determined using spectroscopic methods as well as comparison with data from known compounds.
Acknowledgements
The authors are grateful to Alexander von Humboldt Stiftung and DAAD for awarding L. Manguro a fellowship.