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Note | Regular issue | Vol 51, No. 3, 1999, pp.605-609
Published online, 1st January, 1970
DOI: 10.3987/COM-98-8408
A New trans-Clerodane Diterpene Lactone from Conyza blinii

Liping Xu, Dean Guo,* Jianshen Liu, Junhua Zheng, Kazuo Koike, Zhonghua Jia, and Tamotsu Nikaido*

*Department of Pharmacognosy, School of Pharmaceutical Sciences, Toho University, 2-2-1, Miyama, Funabashi, Chiba 274-8510, Japan

Abstract

A new trans-clerodane lactone, conyzalactone, together with six known compounds, was isolated from the aerial parts of composite Conyza blinii. Its structure was elucidated on the basis of extensive NMR analysis and X Ray crystallographic data.