[Studies on chemical constituents from stem barks of Fraxinus paxiana].

Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica (2008-12-18)
Zhi-jing Ma, Zhi-juan Zhao
ABSTRACT

To investigate the chemical constituents of Fraxinus paxiana. The chemical constituents were isolated and purified by chromatographic techniques and the structures of the compounds were identified with or by spectroscopic methods. Fifteen compounds were obtained from the methanol extract of F. paxiana and their structures were elucidated as esculin (1), esculetin (2), fraxin (3), fraxetin (4), salidroside (5), osmanthuside H (6), liriodendrin (7), 3-(4-beta-D-glucopyranosyloxy-3-methoxy)-phenyl-2E-propenol (8), threo-syringylglycerol (9), euscaphic acid (10), 3-hydroxy-1-(4-hydroxy-3, 5-dimethoxyphenyl)-1-propanone (11), omega-hydroxypropioguaiacone (12), sinapyladehyde (13), betulinic acid (14) and mannitol (15). All compounds were obtained from this plant for the first time.

MATERIALS
Product Number
Brand
Product Description

Supelco
Eleutheroside E, analytical standard
Sigma-Aldrich
7,8-Dihydroxy-6-methoxycoumarin, 98%
Supelco
Fraxin, analytical standard
Sigma-Aldrich
Liriodendrin, ≥85% (LC/MS-ELSD)
Sigma-Aldrich
Osmanthuside H, ≥95% (LC/MS-ELSD)