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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
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May 11, 2023
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Paper | Regular issue | Vol 38, No. 2, 1994, pp.383-389
Published online, 1st January, 1970■ Sesquiterpene Pyridine Alkaloids from Maytenus ilicifolia
Published online, 1st January, 1970
DOI: 10.3987/COM-93-6584
■ Sesquiterpene Pyridine Alkaloids from Maytenus ilicifolia
Osamu Shirota, Hiroshi Morita, Koichi Takeya, and Hideji Itokawa*
*Department of Phamacogncsy, Tokyo College of Pharmacy, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
Abstract
Three sesquiterpene pyridine alkaloids with a dihydroagarofuran core, cangorinines W-I (1), W-II (2), and E-I (3) were isolated from the root bark of Maytenus ilicifolia Mart. (Celastraceae). Their structures were elucidated by spectroscopic methods.
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