F. R. Melek

Publications65
h-index16
Citations707
Highly Influential Citations26
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Triterpenoid saponins with N-acetyl sugar from the bark of Albizia procera.
Three (1,2,4) and one known (3) triterpenoid saponins were isolated from the bark of Albizia procera. The saponins were characterized as… Expand
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Triterpenoid saponins from Schefflera arboricola.
Nine triterpenoid saponins were isolated from the leaves and stems of Schefflera arboricola. The saponins were characterised, on the basis of chemical and spectral evidence, as… Expand
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Echinocystic acid 3,16-O-bisglycosides from Albizia procera.
Three triterpene glycosides and two known ones were isolated from the bark of Albizia procera by using chromatographic techniques. The structures of the compounds were determined to be… Expand
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Flavonoids from Albizia chinensis of Egypt
The flavonoids kaempferol-3-O-α-L-rhamnopyranoside, quercetin-3-O-α-L-rham nopyranoside together with luteolin, kaempferol and quercetin, were isolated from the methanolic extract of the leaves of… Expand
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Triterpenoid saponins from Oreopanax guatemalensis.
Seven oleanane-type saponins were isolated from the leaves and stems of Oreopanax guatemalensis, together with ten known saponins of lupane and oleanane types. The new saponins were respectively… Expand
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Triterpenoid saponins from Fagonia cretica.
Four new triterpenoid saponins were isolated and identified from the aerial parts of Fagonia cretica. They were characterized as 3-O-[beta-D-glucopyranosyl (1-->2)-alpha-L-arabinopyranosyl]… Expand
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Saponins and acylated saponins from Dizygotheca kerchoveana.
Four new triterpenoid saponins were isolated from the leaves and stem of branches of Dizygotheca kerchoveana along with seven known ones. The new saponins were respectively characterized as… Expand
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Cytotoxic triterpenoid saponins acylated with monoterpenic acids from fruits of Gleditsia caspica Desf.
Four bisdesmosidic triterpenoid saponins named caspicaosides A-D, were isolated from the fruits of Gleditsia caspica Desf. Their structures were determined by NMR spectroscopy including HOHAHA, ¹H-¹H… Expand
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Further saponins from Meryta lanceolata.
Five new oleanane-type saponins along with 11 known ones were isolated from the leaves and stems of Meryta lanceolata. The new saponins were characterised by spectroscopic analysis including FAMS, 1… Expand
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Three further triterpenoid saponins from Gleditsia caspica fruits and protective effect of the total saponin fraction on cyclophosphamide-induced genotoxicity in mice
Abstract Three triterpenoidal saponins were isolated from the saponin fraction derived from a Gleditsia caspica Desf. methanolic fruit extract. The isolated saponins were identified as gleditsiosides… Expand
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