ISSN:
0941-1216
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Colchicum decaisnei of Jordanian origin has yielded the dextrorotatory (6S) homoaporphine alkaloids (+)-kreysigine (1), (+)-multifloramine (2), (+)-decaisnine (3) and (+)-szovitsamine (4). Unambiguous 1H and 13C NMR assignments of these alkaloids have been achieved using a combination of 1D- and 2D-NMR spectroscopic techniques. Emphasis was placed on the resolution of the chemical shifts and the coupling constants of the alicyclic protons of rings B and C in order to reinvestigate the molecular conformation of these alkaloids. Also, a mass fragmentation pattern for (+)-multifloramine (2) based on eims, heims, peak matching and linked scan measurements (LSM) was proposed.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/prac.199533701141
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