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Spectroscopy Letters
An International Journal for Rapid Communication
Volume 30, 1997 - Issue 2
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Original Articles

The Application of 2D NMR Techniques in the Structural Assignment of the Diterpenoid Alkaloid, Delphinine

Margie M. Nair Department of Chemistry, University of Cape Town, Rondebosch, 7700, South Africa
,
Graham E. Jackson Department of Chemistry, University of Cape Town, Rondebosch, 7700, South Africa
&
William E. Campbell Department of Chemistry, University of Cape Town, Rondebosch, 7700, South Africa
Pages 213-222 | Received 20 May 1996, Accepted 05 Jul 1996, Published online: 21 Aug 2006
 
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Abstract

The two dimensional inverse detected heteronuclear correlation experiment HMQC and the homonuclear correlation experiments COSY and ROESY were performed on the natural alkaloid, delphinine enabling complete assignments of the 1H and 13C spectra. The stereochemistry of ring A and B have been determined in solution. The results suggest that the application of direct correlation multipulse NMR techniques allows for unambiguous structural assignment of delphinine.

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