On alkaloids. XXI. Optical rotatory dispersion of (+)-eburnamenine and related compounds

1969 ◽  
Vol 34 (2) ◽  
pp. 690-694 ◽  
Author(s):  
K. Bláha ◽  
Z. Koblicová ◽  
J. Trojánek
1969 ◽  
Vol 47 (3) ◽  
pp. 449-455 ◽  
Author(s):  
W. A. Ayer ◽  
B. Altenkirk ◽  
R. H. Burnell ◽  
M. Moinas

The minor alkaloids present among the strong bases of Lycopodiumlucidulum have been reinvestigated. Manske and Marion's alkaloid L.23 has been shown to be epimeric with lycodoline at C-12 and the nitrogen. A correlation between the two alkaloids has been achieved. The presence of a σ-coupled p interaction in the ultraviolet spectrum of lycopodine, lycodoline, and related compounds is described. A Cotton effect due to this chromophore has been detected by means of circular dichroism. The optical rotatory dispersion and circular dichroic properties of lycopodine, 12-epilycopodine, lycodoline, and alkaloid L.23 are discussed in terms of the absolute configuration assigned to these alkaloids.


Author(s):  
C. G. De Grazia ◽  
W. Klyne ◽  
P. M. Scopes ◽  
D. R. Sparrow ◽  
W. B. Whalley

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