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KMID : 0620720020080030077
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Natural Product Sciences
2002 Volume.8 No. 3 p.77 ~ p.82
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Flavonol Glycosides of Maesa Lanceolata Leaves
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Manguro, Lawrence O. Arot
Lemmen, Peter/Ugi, Ivar/Kaus, Wolfgang
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Abstract
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An investigation of the methanolic extract of Maesa lanceolata leaves has led to the isolation of four novel flavonol glycosides characterised as myricetin 3-O-2", 3", 4"-triacetylxylopyranoside (1) quercetin 3-O-β-3??, 6??-diacetylglucopyranosyl-(1→4)-α-2", 3"-diacetylrhamnopyranoside (2), myricetin 3-O-xylopyranosyl-(1→3)-α-rhamnopyranoside (3) and quercetin 3-O-β-galactopyranosyl-(1→4)-α-rhamnopyranoside-7-O-β-galactopyranoside (4). Also isolated from the same extract were known flavonols; quercetin (5), myricetin (6) quercetin 3-O-xylopyranoside (7), quercetin 3-O-α-rhamnopyranoside (8), myricetin 3-O-α-rhamnopyranoside (9), myricetin 3-O-β-galactopyranoside (10) and quercetin 3-O-rutinoside (11).
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