Journal of the Chemical Society. Perkin transactions I p. 3017 - 3026 (1991)
Update date:2022-08-05
Topics:
Carroll, F. Ivy
Abraham, Philip
Gaetano, Kevan
Mascarella, S. Wayne
Wohl, Ronald A.
et al.
(3S)-3-Hydroxyquinidine, the major metabolite of the Cinchona alkaloid quinidine, was prepared by synthetic chemical modification or microbial oxidation of quinidine.The structure of this metabolite has been demonstrated to be (3S)-3-hydroxyquinidine by 1H and 13C NMR, IR, UV and mass spectral analysis.Previously published comparisons of the 13C NMR spectra of 3-hydroxyquinidine and model compounds were used to establish the absolute stereochemistry of the metabolite (see ref. 8).This assignment has been verified by single-crystal X-ray analysis of (3S)-3-hydroxyquinidine methanesulphonate.The gas- and solution-phase conformational preference of the metabolite derived from molecular modelling and NOE studies are compared with the conformation observed by X-ray crystallography.
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