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Obituary
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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Paper | Regular issue | Vol 32, No. 7, 1991, pp.1357-1364
Published online, 1st January, 1970■ Components of the Root Bark of Morus insignis Bur. 2. Structures of Four New Isoprenylated Xanthones, Morusignins E, F, G. and H
Published online, 1st January, 1970
DOI: 10.3987/COM-91-5754
■ Components of the Root Bark of Morus insignis Bur. 2. Structures of Four New Isoprenylated Xanthones, Morusignins E, F, G. and H
Yoshio Hano, Tsuyoshi Okamoto, and Taro Nomura*
*Faculty of Pharmaceutical Sciences, Toho University, 2-2-1, Miyama, Funabashi, Chiba 274-8510, Japan
Abstract
Four new isoprenylated xanthones, morusignins E (1), F (2), G (3), and H (4) were isolated from the root bark of Morus insignis Bur. (Moraceae), collected in Paraguay. The structures of morusignins E - H were shown to be 1 - 4, respectively, on the basis of spectroscopic data.
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