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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Stereospecific fragmentations in the mass spectra of stereoisomeric isoindoloquinazolines.

The mass spectrometric behavior of stereo- and regioisomeric, partially saturated isoindoloquinazolines was studied by positive-ion electron ionization (EI) and fast-atom bombardment ( FAB/LSIMS) mass spectrometry combined with collision-induced dissociation (CID). A highly stereospecific retro-Diels-Alder process was observed in the cyclohexene-fused isomers under the EI conditions, and a corresponding (although less specific) fragmentation was observed in their FAB spectra. In the absence of RDA fragmentations, regio- and stereoisomers of the cyclohexane-fused heterocycles could be distinguished based on their FAB/CID spectra.[1]

References

  1. Stereospecific fragmentations in the mass spectra of stereoisomeric isoindoloquinazolines. Ovcharenko, V.V., Pihlaja, K., Stájer, G. J. Am. Soc. Mass Spectrom. (2003) [Pubmed]
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