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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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Communication | Regular issue | Vol 22, No. 6, 1984, pp.1343-1345
Published online, 1st January, 1970■ Biotransformation of a Tetrahydroprotoberberine N-Metho Salt to a Spirobenzyisoquinoline Accompanying N-Methyl Group Transfer to O-Methyl Group by Callus Cultures of Corydalis Species
Published online, 1st January, 1970
DOI: 10.3987/R-1984-06-1343
■ Biotransformation of a Tetrahydroprotoberberine N-Metho Salt to a Spirobenzyisoquinoline Accompanying N-Methyl Group Transfer to O-Methyl Group by Callus Cultures of Corydalis Species
Kinuko Iwasa,* Akiko Tomii, Narao Takao, Toshimasa Ishida, and Masatoshi Inoue
*Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan
Abstract
The Structure and stereochemistry of base C, a 13-hydroxytetrahydroprotoberberine metabolite in cell cultures, have been determined by X-ray analysis. Thereby the biotransformation of a tetrahydroprotoberberine N-metho salt to a spirobenzylisoquinoline , involving a migration of the N-methyl group to the O-methyl group was first demonstrated.
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