[Study on chemical constituents of Eucommia ulmoides leaves].
Mo kle
Abstrè
OBJECTIVE
To investigate the chemical constituents of Eucommia ulmoides leaves.
METHODS
Various column chromatography were used in the isolation and purification, physiochemical constant determination and spectral analysis were adopted to determine the chemical structures.
RESULTS
Ten compounds were isolated and identified as borreriagenin (1), n-butyl-O-β-D-fructopyranoside (2), α-D-glucopyranosyl-(1-->1')-3'-amino-3'-deoxy-β-D-glucopyranoside (3), β-D-fructofuranosyl-α-D-galactopyranoside (4), β-D-fructose (5), diisobutyl phthalate (6), 5-hydroxy-9-isopropylether-guaiacylglycerol (7), 4-hydroxyphenylethanol-8-O-β-D-apiofuranosyl(1-->6)-β-D-glucopyranoside (8), lariciresinol (9), and (3S,5R,6R,9S)-tetrahydroxy-7-ene-megastigmane (10).
CONCLUSIONS
All compounds are isolated from this genus for the first time.
