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15N chemical shifts and long-range 1H-15N coupling pathways of selected strychnos alkaloids |
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| Authors: | Gary E Martin Ronald C Crouch C Webster Andrews |
| Abstract: | The Strychnos alkaloids have been the focal point of considerable synthetic and spectroscopic effort. We now report the 15N chemical shifts and long-range 1H-15N coupling pathways of strychnine, brucine, and holstiine at natural abundance. Long-range coupling pathways were established using a gradient-enhanced HMQC sequence optimized for the observation of 1H-15N long-range couplings. |
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