13C Nuclear magnetic resonance spectroscopy in the elucidation of structures of diterpenoid alkaloids
Keyword(s):
C Nmr
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13C Nuclear magnetic resonance spectroscopy is an exceptionally useful tool for the structure determination of diterpenoid alkaloids. A detailed study of the 1H and 13C nmr spectra of aconitine and 3-deoxyaconitine has permitted definite assignments to all the carbon atoms of the molecule. Chemical shift revisions have been suggested for certain carbon atoms of the C19-diterpenoid alkaloids. Chemical examination of Aconitumcolumbianum Nutt. ssp. columbianum, A. forrestii Stapf, Delphiniumtatsienense Franch., and D. vestitum Wall, resulted in the isolation of several new C19-diterpenoid alkaloids. The structure derivation of those alkaloids was based mainly on 13C nmr spectroscopic evidence.
1976 ◽
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1983 ◽
Vol 130
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pp. 383-389
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2016 ◽
Vol 69
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pp. 3703-3714
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2003 ◽
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pp. 1029-1031
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2001 ◽
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pp. 473-482
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1995 ◽
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pp. 212-215
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1979 ◽
Vol 32
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pp. 559-564
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