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Planta Med 1980; 38(2): 161-164
DOI: 10.1055/s-2008-1074854
Research Articles

© Georg Thieme Verlag Stuttgart · New York

New Sesquiterpenes from the Roots of Cacalia auriculata

Nasr A. El-Emary1 , Tsunematsu Takemoto2 , Genjiro Kusano2
  • 1Faculty of Pharmacy, Assiut University, A. R. Egypt.
  • 2Institute of Pharmacognosy, Tokushima University, Japan.
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Publication History

Publication Date:
29 April 2008 (online)

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Abstract

Three known sesquiterpenes, O-methylcacaldienol, 12-(dehydrocacalohastine-14-yl) cacalohastine and maturinone have been isolated from the roots of Cacalia auriculata dc var. Kamtschatika (Maxim.) Matsumura together with a new norsesquiterpene I. and new compounds V, VI and VII. β-amyrin and sitosterols were detected by gas chromatography and mass spectrometry.

Aerial parts of C. auriculata var. kamtscbatica suggested noticeable differences in their constituents. So a study of the constituents of the tuberous roots was undertaken.

The present paper reports the isolation and structure elucidation of 7 sesquiterpenes (I-VII), isolated by SiO2 column chromatography and further purification on preparative TLC when necessary.

Key Word Index

Cacalia auriculata - Asteraceae - (Compositae) - O-methylcacaldienol - 12-(dehydrocacalohastine-14-yl)cacalohastine - Maturinone - Sesquiterpenes - β-Amyrin - Sitosterol.