Methyl gallate is a natural constituent of maple (Genus Acer) leaves.
Methyl gallate was found in ethanolic extracts of red maple (Acer rubrum L.), silver maple (A. saccharinum L.) and sugar maple (A. saccharum Marsh) leaves, but more was present in methanolic extracts. The increased amount of methyl gallate in methanolic extracts was accompanied by a disappearance of m-digallate. It is concluded that only some of the methyl gallate detected in methanolic extracts is an artefact as a result of methanolysis of m-digallate. Its presence in ethanolic extracts is evidence that it is also a natural constituent of maple leaves.
Abou-Zaid
Mamdouh M
MM
Natural Resources Canada, Canadian Forest Service, Great Lakes Forestry Centre, Ontario, P6A 2E5, Canada. mabouzai@nrcan.gc.ca
Lombardo
Domenic A
DA
Nozzolillo
Constance
C
D031002:Acer / Q000737:chemistry*; D005707:Gallic Acid / Q000031:analogs & derivatives* / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D000432:Methanol / Q000737:chemistry; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry*
D010936:Plant Extracts; C052082:methyl gallate; D005707:Gallic Acid; D000432:Methanol