Mass Spectrometric Fragmentation of 2a,4-Disubstituted 2,2a,3,4-Tetrahydro-2-phenyl-1H-azeto[2,1-d]- [1,5]benzothiazepin-1-ones Under Electron Impact Ionization Conditions and Comparison with their 2-Heteroatom Substituted Analogues |
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| Authors: | Jiaxi Xu Chao Wang |
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| Institution: | Department of Chemical Biology , Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University , Beijing, China |
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| Abstract: | The mass spectrometric behavior of seven 2a,4-disubstituted 2,2a,3,4-tetrahydro-2-phenyl-1H-azeto2,1-d]1,5]benzothiazepin-1-ones has been studied with the aid of mass-analyzed ion kinetic energy spectrometry and accurate mass measurements under electron impact ionization. All compounds show a tendency to eliminate a phenylketene molecule, an ethyl or benzyl radical, or a phenylketene molecule plus an SH radical. The mass spectrometric behavior of the title compounds was compared to those of 2-heteroatom-substituted analogues. |
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| Keywords: | 1H-azeto[2 1-d][1 5]benzothiazepin-1-one electron impact ionization mass spectrometry |
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