Mass-spectrometric study of the structure of the alkaloids of lolium

Conclusions 1. The results of a study of the fragmentation of substances (I)-(IX) under the conditions of mass spectroscopy have confirmed the positions of the side-chain nitrogen atom and the ethereal oxygen.2. When the functional groups in position C₁ in the molecules of substances (I)-(IX) change, the main fragments remain the same for all the compounds studied and specific fragments appear for each compound.3. A possible scheme of fragmentation is given for substances (I)-(IX).Khimiya Prirodynkh Soedinenii, Vol. 4, No. 5, pp. 298–304, 1968