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Communication | Special issue | Vol 10, No. 1, 1978, pp.117-121
Published online, 1st January, 1970
DOI: 10.3987/S-1978-01-0117
Euponin: A New Epoxy Sesquiterpene Lactone Inhibiting Insect Development from Eupatorium japonicum

Shuhei Nakajima and Kazuyoshi Kawazu*

*Department of Chemistry, Depatment of Agricultural, Okayama University, 3-1-1 Tsushima-naka, Okayama 700-8530, Japan

Abstract

Euponin, a new naturally occurring guaianolide inhibiting insect development, was isolated from the leaves of Eupatorium japonicum Thunb. (Compositae). Its structure was elucidated on the basis of chemical transformations and full spectral analysis.