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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 36, No. 1, 1993, pp.107-116
Published online, 1st January, 1970■ Stereochemistry of Berbine and Some Related Compounds
Published online, 1st January, 1970
DOI: 10.3987/COM-92-6186
■ Stereochemistry of Berbine and Some Related Compounds
Georges Memetzidis, Louis Jung, and Jean-Francois Stambach*
*Laboratoire de Chimie Thérapeutique, U.F.R. des Sciences Pharmaceutiques, Université Louis Pasteur, 74, route du Rhin, BP 24, 67401 ILLKIRCH Cedex, France
Abstract
The stereochemistry of berbines (1-15) and their berbane (16) and berbinanes (17 and 18) derivatives was established on the basis of their ir, 1H-nmr, 13C-nmr spectral data and the rates of methiodide formation. All the compounds in this study were found to have a trans-B/C conformation whereas berbinane (18) had a cis-A/B configuration.
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