Abstract

AbstractBased on the structure of the HIV integrase core domain, dipeptide derivatives, as a type of HIV integrase inhibitor, were synthesized, and their fragmentation pathways were investigated by electrospray ionization mass spectrometry (ESI‐MSn) in conjunction with tandem mass spectrometry (MS/MS). In order to better understand the fragmentation pathways, the MS2 and MS3 spectra of the title compound were obtained. The main fragmentation pathways occur by the cleavage of the C–CO bonds between N‐(benzothiazol‐2‐yl)aminocarbonyl and methylene, NH–CO bonds between the NH groups and carbonyl groups. Electrospray ionization was proven to be a good method for the structural characterization and identification of this kind of compound.

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