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Influence of fluoro atoms on the spontaneous and collisionindued fragmentation of the ions [M – OCH3]+ [M + NH4]+ of per-O-acetylated methly x- deoxy-x-fluoro-α-d-glucopyranosides

✍ Scribed by V. Kováčik; P. Kováč; H.-Fr. Grützmacher

Publisher
John Wiley and Sons
Year
1991
Tongue
English
Weight
171 KB
Volume
26
Category
Article
ISSN
1076-5174

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✦ Synopsis

Influence of Fluoro Atoms on the Spontaneous and Collisioninduced Fragmentation of the Ions [ M -OCHJ]+ and [M + NH, 1 + of per-0-acetylated Methyl x-Deoxy-x-fluoroa-Dglucopyranosides

Deoxyfluoroglycosides are important model substances for studies of hydrogen bonding between ligands and biologically active proteins such as, for example, immunoglobulins. To assist the mass spectral characterization of these monosaccharides, the electron impact ionization (EI) mass spectra and the ammonia chemical ionization (CI(NH,)) mass spectra of the acetates of synthetic' methyl x-deoxy-x-fluoro-a-D-glucopyranosides (1-4) (Scheme 1) were obtained.

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Influence of fluorine atoms on the electron impact and chemical ionization mass spectrometric fragmentation of methyl x-deoxy-x-fluoro-per-O-methyl-β-D-galactopyranosides
✍ V. Kováčik; P. Kováč 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 English ⚖ 347 KB

Fully methylated methyl x-deoxy-x-fluoro-PD-galactopyranosides were studied using electron impact (EI) and chemical ionization (CI) mass spectrometry and by gas chromatography (GC)/mass spectrometry. Metastable daughter-and parent-ion measurements and high-resolution measurements were used to evalua