J Integr Plant Biol. ›› 1990, Vol. 32 ›› Issue (6): -.

• Research Articles •    

Studies on the Chemical Constituents from the Bud of Cleistocalyx operculatus

Zhang Feng-xian, Liu Mei-fang and Lu Ren-rong   

Abstract: Nine constituents have been isolated from the bud of Cleistocalyx operculatus (Roxb.) Merr. et perry (after the removal of essential oils by steam distillation), eight of them were identified as 2', 4'-dihydroxy-6'-methoxy-3',5'-dimethylchalcone (Ⅲ), 5,7-dihydroxy-6,8-dimethylflavanone (Ⅳ), 7-hydroxy-5-methoxy-6,8-dirnethylflavanone (Ⅴ), ethyl gallate (Ⅰ), gallic acid, (Ⅱ), ursolic acid' (Ⅵ), β-sitosterol (Ⅷ) and cinnamic acid (Ⅶ), based on the evidences from spectroscopic (UV, IR, NMR, MS) analysis and comparison of physico-chemicat constants. The identification of the ninth constituent is under way.

Key words: Cleistocalyx operculatus, Flay onoid, Sterol, Phenolic constituents

Editorial Office, Journal of Integrative Plant Biology, Institute of Botany, CAS
No. 20 Nanxincun, Xiangshan, Beijing 100093, China
Tel: +86 10 6283 6133 Fax: +86 10 8259 2636 E-mail: jipb@ibcas.ac.cn
Copyright © 2022 by the Institute of Botany, the Chinese Academy of Sciences
Online ISSN: 1744-7909 Print ISSN: 1672-9072 CN: 11-5067/Q
备案号:京ICP备16067583号-22