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Obituary
Zenichi Yoshida (1925-2023)
Zenichi Yoshida (1925-2023)
Professor. Zenichi Yoshida,
a member of the Honorary Advisors of HETEROCYCLES (1975-1998),
has passed away on May 4, 2023 at the age of 97.
I deeply express my regret over his death.
Kunio Ogasawara
Editor
May 11, 2023
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Communication | Regular issue | Vol 41, No. 9, 1995, pp.1923-1926
Published online, 1st January, 1970■ Inulavosin, a New Thymol Dimer with Piscicidal Activity from Inula nervosa
Published online, 1st January, 1970
DOI: 10.3987/COM-95-7148
■ Inulavosin, a New Thymol Dimer with Piscicidal Activity from Inula nervosa
Takashi Yoshida, Kazuko Mori, and Guangxin He
*Faculty of Pharmaceutical Sciences, Okayama University, Tsushima, Okayama 700, Japan
Abstract
Upon the fractionation guided by piscicidal activity using the Medaka (Oryzias latipes), three piscicidal substances were isolated from the root of Inula nervosa, and were characterized as thymol and its derivatives based on the spectral analyses including 2D nmr techniques. A new piscicide, named inulavosin, was a thymol dimer with a new heterocyclic skeleton.
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