The fragmentation pattern of 30 compounds belonging to different classes of the lignan family was studied by liquid chromatography-electrospray ionization ion-trap mass spectrometry. On the basis of the observed fragmentation patterns, identification of different types of lignans was achieved. For example, dibenzylbutyrolactone lignans showed a characteristic fragmentation pathway by the loss of 44 Da (CO2) from the lactone moiety, whereas dibenzylbutanediols showed a loss of 48 Da by a combined loss of formaldehyde and water from the 1,4-butanediol moiety. Lignan glycosides readily lost the sugar residue to give the parent lignan as their primary product ion. In addition, several compound-specific fragmentations were observed and used for identification of individual compounds. A versatile method for analyses of lignans was developed using LC separation on a C8 column followed by fragmentation and detection of ions produced in the ion trap. Copyright © 2007 John Wiley & Sons, Ltd.
液相色谱-电喷雾离子阱质谱法研究了属于
木质素家族不同类别的 30 种化合物的碎片模式。根据观察到的碎片模式,对不同类型的
木质素进行了鉴定。例如,二苄基丁内酯
木质素的特征碎片途径是从内酯分子中损失 44 Da(
CO2),而二苄基
丁二醇的特征碎片途径是从 1,4
丁二醇分子中损失 48 Da(
甲醛和
水)。
木质素苷很容易失去糖残基,从而得到作为主要产物离子的母体
木质素。此外,还观察到了几种化合物的特异性片段,并可用于单个化合物的鉴定。 通过在 C8 色谱柱上进行
液相色谱分离,然后对离子阱中产生的离子进行破碎和检测,开发出了一种分析
木质素的多功能方法。Copyright © 2007 John Wiley & Sons, Ltd. All Rights Reserved.