Cancentrine. V. The 13C magnetic resonance spectra of cancentrine and some derivatives; the structure of 10-oxocancentrine
Keyword(s):
H Nmr
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The 13C magnetic resonance spectrum of cancentrine is reported. Assignments of chemical shifts have been made by comparison of the cancentrine spectrum with the published spectra of codeine, codeinone, and cularine and with the spectra reported here for the first time of 9,10-dihydrocancentrine methine-O-methyl ether and 10-oxocodeinone. The spectral data so obtained have been used to interpret the 13C spectrum of 10-oxocancentrine, a new alkaloid of the cancentrine family, and to verify the structure deduced for it from 1H nmr, ir, uv, and mass spectral data.
2015 ◽
Vol 49
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pp. 99-103
1979 ◽
Vol 44
(2)
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pp. 420-423
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2012 ◽
Vol 2012
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pp. 1-13
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