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Paper | Regular issue | Vol 27, No. 6, 1988, pp.1395-1399
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


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.