ISSN:
0018-019X
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The crystal structure of axillarine hydrobromide ethanol solvate has been determined from analysis of photographic X-ray data. The crystal system is orthorhombic, space group P212121, with unit cell dimensions a = 9.89, b = 11.23, c = 20.83 Å. The structure was determined by means of Patterson and Fourier syntheses, and refined by the method of least-squares to an R index of 9.4%.The structural features of axillarine are noted and compared with those of several other pyrrolizidine alkaloids. The NMR. chemical shift difference between the signals due to the non-equivalent C(9) protons in alkaloids derived from retronecine is also discussed.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/hlca.19760590627
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