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Published on: October 27, 2023
[Studies on the chemical constituents from Rhododendron delavayi]
He-jiao Song1, Yu-yin Pan, Wei-guang Wang
1The college of Life Science and Technology, Kunming University of Science and Technology, Kunming 650224, China.
Objective:
To study the chemical constituents of the leaves from Rhododendron delavayi.
Methods:
The compounds were isolated and purified using column chromatography with silical gel and Sephadex LH-20, and their structures wer identified by their physical and spectral data.
Results:
Eight compounds were isolated and elucidated as 3',4',7-trihydroxy-3,5-dimethoxyflavone (1), 3',4',5,7-tetrahydroxy-3-methoxyflavone(2), quercetin-3-O-beta-D-arabinopyranoxide(3), catechin(4), epicatechin (5), epicatechin-(2beta-->O-->7,4beta-->8)-ent-epicatechin(6), (2S)-4-(3,4-dihydroxyphenyl) -2-butanol(7), (3,4-dihydroxyphenyl)-2-ethanol(8).
Conclusion:
Compounds 2,3,6,7,8 are isolated from this plant for the first time.
