Abstract
The mass spectral fragmentation patterns of akuammicine, dihydroakuammicine, tetra- hydroakuammicine and many of their relatives are summarized in the terms of the most characteristic mass spectral peaks. Plausible mechanism can be postulate in most instances for these ions and attention is called to the use of this information in the structure elucidation of alkaloids with a 2-methyleneindoline (I) chromophore.
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