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Acylated flavonol glycosides from leaves of Stenochlaena palustris.
Journal article

Acylated flavonol glycosides from leaves of Stenochlaena palustris.

  • 1999-01-23
Published in:
  • Journal of natural products. - 1999
Acylation
Anti-Infective Agents
Carbohydrate Conformation
Flavonoids
Flavonols
Glycosides
Magnetic Resonance Spectroscopy
Microbial Sensitivity Tests
Plant Leaves
Spectrometry, Mass, Fast Atom Bombardment
English From the leaves of Stenochlaena palustris five new O-acylated flavonol glycosides, stenopalustrosides A-E (1-5), have been isolated along with five known compounds, kaempferol 3-O-(3' '-O-E-p-coumaroyl)-(6' '-O-E-feruloyl)-beta-D-glucopyranoside (6), kaempferol 3-O-(3' ',6' '-di-O-E-p-coumaroyl)-beta-D-glucopyranoside (7), kaempferol 3-O-(3' '-O-E-p-coumaroyl)-beta-D-glucopyranoside (8), kaempferol 3-O-(6' '-O-E-p-coumaroyl)-beta-D-glucopyranoside (9); and kaempferol 3-O-beta-D-glucopyranoside (10). The structures of the isolates were elucidated by spectroscopic methods, mainly 1D and 2D NMR. Compounds 1-4 showed significant antibacterial activities against Gram-positive strains. The structural difference between the isolated antibacterial and nonantibacterial compounds is discussed.
Language
  • English
Open access status
closed
Identifiers
Persistent URL
https://sonar.ch/global/documents/284512
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