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252Cf Plasma desorption mass spectrometric study of interactions of steroid glycosides with amino acids

✍ Scribed by V. V. Pilipenko; L. F. Sukhodub; S. A. Aksyonov; A. N. Kalinkevich; P. K. Kintia

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
76 KB
Volume
14
Category
Article
ISSN
0951-4198

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✦ Synopsis

252Cf Plasma desorption with time-of-flight mass spectrometry (TOF-PDMS) has been applied to comparative studies of the interactions of steroid glycosides (SGs) of the spirostan series with amino acids. SGs can interact with amino acids to form heteroclusters of the type SG + aminoacid + H and SG + aminoacid + K. It is shown how the affinity of SGs for amino acids depends on the structures of both the SG carbohydrate chain and the SG aglycone, and on the nature of the amino acid side chain. Copyright 2000 John Wiley & Sons, Ltd.

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252 Cf plasma desorption mass spectrometry was used to investigate the formation of complexes of 7-amino-4-methylcoumarins with Ξ²and Ξ³-cyclodextrins. The individual substances and their co-ground mixtures were analyzed by plasma desorption ionization. In the negative-ion mass spectra of cyclodextrin