Coordination (Ag<sup>+</sup>) Ion Spray−Mass Spectrometry of Peroxidation Products of Cholesterol Linoleate and Cholesterol Arachidonate: High-Performance Liquid Chromatography−Mass Spectrometry Analysis of Peroxide Products from Polyunsaturated Lipid Autoxidation
作者:Christine M. Havrilla、David L. Hachey、Ned A. Porter
DOI:10.1021/ja001180f
日期:2000.8.23
Lipid peroxidation of polyunsaturated fatty acids and esters leads to a complex mixture of hydroperoxides and cyclic peroxides, some of which possess potent biological activity. These product mixtures contain dozens of diastereomers and regioisomers. The technique of coordination ion spray−mass spectrometry (CIS−MS), recently reported by Bayer and collaborators, proves to be a powerful tool for the
多不饱和脂肪酸和酯的脂质过氧化导致氢过氧化物和环状过氧化物的复杂混合物,其中一些具有有效的生物活性。这些产品混合物包含数十种非对映异构体和区域异构体。最近由拜耳及其合作者报道的配位离子喷雾质谱 (CIS-MS) 技术被证明是分析复杂过氧化物混合物的强大工具。银离子形成容易检测到的过氧化物和氢过氧化物的 Ag+ 加合物。在 [M+107] 和 [M+109] 处观察到的这些离子会发生典型的氢过氧化物和环状过氧化物的碎裂。因此,从氢过氧化物和环状过氧化物的许多银离子加合物中观察到霍克碎裂,发生碎裂以产生醛和环氧化物。