THE (Z)/(E)-CONFIGURATIONAL ANALYSIS OF ISOLATED DOUBLE-BONDS IN PHEROMONES AND UNSATURATED FATTY-ACIDS - THE USE OF 1D AND 2D J-RESOLVED H-1 CW OFF-RESONANCE TECHNIQUES IN C-13 NMR-SPECTROSCOPY

被引:20
|
作者
RADEGLIA, R [1 ]
POLESCHNER, H [1 ]
HEYDENREICH, M [1 ]
机构
[1] BIOL RES CTR BERLIN,O-1532 KLEINMACHNOW,GERMANY
关键词
OFF-RESONANCE; 2ND ORDER EFFECTS; VICINAL H-1; H-1-COUPLING CONSTANTS; CONFIGURATION OF DOUBLE BONDS; SEX PHEROMONES; UNSATURATED FATTY ACIDS;
D O I
10.1002/mrc.1260291010
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The H-1 CW off-resonance decoupled C-13 NMR spectra of pheromones and unsaturated fatty acids were measured for the determination of the configuration of double bonds of the type -CH2-CH = CH-CH2-. The decoupling frequency corresponded to the resonance frequency of the CH2 protons. The 2nd order splittings in the observed multiplets of the olefinic carbon atoms allow an approximate determination of the vicinal coupling constant between the olefinic protons, and the configurational assignment of the double bond.
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页码:1028 / 1035
页数:8
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