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Yoshito Kishi (1937-2023)
Yoshito Kishi (1937-2023)
Professor. Yoshito Kishi,
a member of the Honorary Editorial Associates of HETEROCYCLES,
has passed away on January 9, 2023 at the age of 85.
I deeply express my regret over his death.
Kunio Ogasawara
Editor
January 13, 2023
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Communication | Regular issue | Vol 45, No. 5, 1997, pp.867-874
Published online, 1st January, 1970■ Revised Structure of Sanggenon A
Published online, 1st January, 1970
DOI: 10.3987/COM-97-7794
■ Revised Structure of Sanggenon A
Yoshio Hano, Ryuichi Kanzaki, Toshio Fukai, and Taro Nomura*
*Faculty of Pharmaceutical Sciences, Toho University, 2-2-1, Miyama, Funabashi, Chiba 274-8510, Japan
Abstract
The structure of sanggenon A, which has been isolated from the Chinese crude drug "Sang-Bai-Pi", was revised on the basis of two-dimentional NMR spectroscopic and chemical evidence. Sanggenon A is a unique 3-hydroxyflavanone derivative bearing an isoprenyl group at the C-2 position of the skeleton. The other flavanones having sanggenon A-type structure, including sanggenons M and C, also required the revision of the structure.
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