J Integr Plant Biol. ›› 1994, Vol. 36 ›› Issue (10): -.

• Research Articles •    

Chemical Structure of Macrocalyxin H

Wang Xian-rong, Wang Hong-ping, Shinichi Ueda and Tetsuro Fujita   

Abstract: Three crystalline components, a new kaurane type diterpenoid named macrocalyxin H and two known diterpenoid oridonin and enmenol, were isolated from the leaves of Rabdosia macrocalyx (Dunn) Hara. Based on IR, MS, 1H-1H COSY, 13C-1H COSY and NOE spectroscopy, the structure of macrocalyxin H was determined as ent-7β-20-epoxy-lα, 6α, 7α, 15α, 16α-pentahydroxy kaurene- 17-acetate.

Key words: Rabdosia macrocalyx, Ent-kaurenoids, Macrocalyxin H

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 © 2021 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