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[Phenylpropanoids constituents of Eucommia ulmoides leaves]
Objective:
To investigate phenylpropanoids constituents from Eucommia ulmoides leaves.
Methods:
Various column chromatographic methods were used in isolation and purification. Physiochemical constant determination and spectral analysis were adopted to determine the chemical structures of phenylpropanoids.
Results:
Nine phenylpropanoids were isolated and identified as caffeic acid (1), chlorogenic acid methylester (2), syringin (3), guaiacylglycerol (4), 5-methoxy-guaiacylglycerol (5), 5,9-dimethoxy-guaiacylglycerol (6), 9-n-butyl-guaiacylglycerol (7), 9-n-butyl-isoguaiacylglycerol (8), 8'-methoxy-olivil (9).
Conclusion:
Compounds 5 - 9 are isolated from this plant for the first time.
