Natural Product Sciences

The Korean Society of Pharmacognosy (한국생약학회)
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Flavonol Glycosides of Maesa Lanceolata Leaves

  • Manguro, Lawrence O. Arot (Chemistry Department, Nairobi University) ;
  • Lemmen, Peter (Technische Universitaet Muenchen, Institut fuer Organische Chemie und Biochemie) ;
  • Ugi, Ivar (Technische Universitaet Muenchen, Institut fuer Organische Chemie und Biochemie) ;
  • Kraus, Wolfgang (Hohenheim Universitaet, Institut fuer Organische Chemie)
  • Published : 2002.09.01
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Abstract

An investigation of the methanolic extract of Maesa lanceolata leaves has led to the isolation of four novel flavonol glycosides characterised as myricetin 3-0-2', 3', 4'-triacetylxylopyranoside (1), quercetin $3-O-{\beta}-3'$, $6'-diacetylglucopyranosyl-(1{\longrightarrow}4)-{\alpha}-2'$, 3'-diacetylrhamnopyranoside (2), myricetin $3-O-xylopyranosyl-(1{\to}3)-{\alpha}-rhamnopyranoside$ (3) and quercetin $3-O-{\beta}-ga1actopyranosyl-(1{\to}4)-{\alpha}-rhamnopyranoside-7-O-{\beta}-galactopyranoside$ (4). Also isolated from the same extract were known flavonols; quercetin (5), myricetin (6), quercetin 3-O-xylopyranoside (7), quercetin $3-O-{\alpha}-rhamnopyranoside$ (8), myricetin $3-O-{\alpha}-rhamnopyranoside$ (9), myricetin $3-O-{\beta}-galactopyranoside$ (10) and quercetin 3-O-rutinoside (11).

Keywords

References

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