Christie W W, Brechany E Y, Holman R T
Lipids. 1987 Apr;22(4):224-8. doi: 10.1007/BF02533983.
The picolinyl ester derivatives of the complete series of isomeric octadecenoates, methylene-interrupted octadecadienoates, and of octadec-9-ynoate have been subjected to gas chromatography-mass spectrometry. A fused-silica capillary column, coated with a cross-linked methyl silicone, was used for the separation. Electron impact spectra were determined at 70 eV. Earlier observations with a limited series of model compounds were confirmed, and it was shown that the picolinyl ester derivatives were of almost universal value in the location of double bonds in such isomers. Difficulties of interpretation arose mainly when the double bonds were close to the carboxyl group.
完整系列的异构十八碳烯酸酯、亚甲基间断的十八碳二烯酸酯以及十八碳-9-炔酸酯的吡啶甲酯衍生物已进行气相色谱-质谱分析。使用涂有交联甲基硅氧烷的熔融石英毛细管柱进行分离。在70电子伏特下测定电子轰击光谱。早期对有限系列模型化合物的观察结果得到了证实，结果表明吡啶甲酯衍生物在确定此类异构体中双键的位置方面几乎具有普遍价值。主要在双键靠近羧基时出现解释困难。
