Laser desorption/Fourier transform mass spectra of glycoalkaloids and steroid glycosides.
Laser desorption/Fourier transform mass spectra of glycoalkaloids and steroid glycosides.
复制标题
配糖生物碱和类固醇糖苷的激光解吸/傅里叶变换质谱。
DOI：
10.1002/bms.1200130409
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
Wilkins,CL
中科院分区：
文献类型：
--
作者：
Coates,ML;Wilkins,CL
使用激光解吸/傅里叶变换质谱法获得5种糖缀合物的正离子和负离子质谱。这些是糖苷生物碱α-龙葵碱和α-番茄碱以及类固醇糖苷gitoxin，毛花苷A和毛地黄皂苷。用KCl掺杂产生钾和氯离子附着离子。除毛地黄皂苷外，在这些物质中观察到很少的碎片离子，尽管负离子光谱显示比正离子光谱相对更多的碎片。所有主要片段似乎都是由于糖苷键处的裂解导致糖基损失而产生的。这与该实验室研究的麦芽低聚糖的行为形成鲜明对比。
Positive‐ and negative‐ion mass spectra of five glycoconjugates were obtained using laser desorption/Fourier transform mass spectrometry. These were the glycoalkaloids α‐solanine and α‐tomatine and the steroid glycosides gitoxin, lanatoside A and digitonin. Doping with KCl yielded both potassium‐ and chloride‐attachment ions. Few fragment ions were observed for these species, with the exception of digitonin, although the negative‐ion spectra showed relatively more fragmentation than the positive‐ion spectra. All major fragments appeared to arise from losses of sugar groups due to cleavages at the glycosidic linkages. This contrasted sharply with the behavior of the malto‐oligosaccharides studied in this laboratory.