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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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Note | Regular issue | Vol 48, No. 2, 1998, pp.311-317
Published online, 1st January, 1970■ New Alkaloids from the Root of Stephania tetrandra (Fen-Fang-Ji)
Published online, 1st January, 1970
DOI: 10.3987/COM-97-8028
■ New Alkaloids from the Root of Stephania tetrandra (Fen-Fang-Ji)
Tatsunori Ogino,* Takao Katsuhara, Toshitsugu Sato, Hiroshi Sasaki, Minoru Okada, and Masao Maruno
*Central Research Laboratory, Tsumura & Co., 3586 Yoshiwara, Ami-machi, Inashiki-gun, Ibaraki, 300-11, Japan
Abstract
Four new alkaloids named fenfangjines F, G, H, and I were isolated from the root of Stephania tetrandra S. Moore, the Chinise traditional medicine "Fen-Fang-Ji". The chemical structures of fenfangjines F, G, H, and I were determined to be 1, 2, 3, and 4 by spectral analyses and chemical methods, respectively.
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