The fragmentation mechanisms of prototypical disaccharides have been studied herein by coupling tandem mass spectrometry (MS) with collisional chemical dynamics simulations. These calculations were performed by explicitly considering the collisions between the protonated sugar and the neutral target gas, which led to an ensemble of trajectories for each system, from which it was possible to obtain
本文已通过将串联质谱(MS)与碰撞
化学动力学模拟耦合来研究原型二糖的片段化机理。这些计算是通过明确考虑质子化糖与中性目标气体之间的碰撞而进行的,这导致每个系统的轨迹整体,从中可以获得反应产物和机理而无需预先施加它们。研究了
纤维二糖,
麦芽糖和
龙胆二糖的β-
氨基乙基和
氨基丙基衍
生物,以观察其立体
化学和糖苷键位置的差异。MS / MS和MS / MS / MS的
化学动力学模拟用于为一些实验观察到的产物离子提供一些主要和次要的碎裂机理。