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Communication | Special issue | Vol 5, No. 1, 1976, pp.373-376
Published online, 1st January, 1970■ 2-Methoxydihydrohelenalin from the Rhizoma of Sendai Helenium autumnale L
Published online, 1st January, 1970
DOI: 10.3987/S-1976-01-0373
■ 2-Methoxydihydrohelenalin from the Rhizoma of Sendai Helenium autumnale L
Yoshikazu Kondo,* Fumio Hamada, and Fumihiko Yoshizaki
*Pharmaceutical Institute, Tohoku University, Aobayama, Sendai 980-8578, Japan
Abstract
Helenalin and 2-methoxydihydrohelenalin II, a first naturally occurring pseudoguaianolide, were isolated from the rhizoma of Sendai Helenium autumale (Compositae). The structure and stereochemistry of II were confirmed on the basis of chemical and physical means.
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