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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 27, No. 6, 1988, pp.1395-1399
Published online, 1st January, 1970■ 2D 1H- 13C Heteronuclear NMR Study of 9-Methoxyellipticine and of the Related Indole and Carbazole Derivatives
Published online, 1st January, 1970
DOI: 10.3987/COM-88-4486
■ 2D 1H- 13C Heteronuclear NMR Study of 9-Methoxyellipticine and of the Related Indole and Carbazole Derivatives
Gérard Commenges and Renée C. Rao*
*Laboratoire de Pharmacologie et de Toxicologie Fondamentales, C.N.R.S., 205 Route de Narbonne, 31400 Toulouse Cedex, France
Abstract
Unambiguous assignment based on 2D 1H-1H homonuclear and 1H-13C heteronuclear correlations is given for the 13 C-NMR spectrum of 9-methoxyellipticine (3) in DMSO-d6, settling the discrepancy existing between the earlier data. The 13C-NMR spectra of 5-methoxyindole (1), and 1,4-dimethylcarbazole (2), which have been used as model compounds for the earlier 13C assignments of (3) have also been reinvestigated.
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