ISSN:
0749-1581
Keywords:
13C-enrichment
;
13C NMR
;
spectral assignment
;
Cycloartanol
;
Cycloartanol
;
Skeleton formation mechanism
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Previously proposed 13C NMR spectral assignments of cycloartenol (9,19-cyclolanost-24-en-3β-ol) (1) and cycloartanol (9,19-cyclolanostan-3β-3-ol) (2) were re-examined by means of 13C-enrichment experiments and LIS measurement of 13C chemical shifts. Revised signal assignments are proposed for C-7, C-11, C-16, C-18, C-21 and C-28 of 1 and C-7, C-11, C-12, C-15 and C-16 of 2. Experimental proof for the skeleton formation mechanism of 1 based on 13C NMR spectral findings is presented.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1260250806
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