Analytical Chemistry and Spectroscopy
Wiley InterScience Backfile Collection 1832-2000
Chemistry and Pharmacology
The mass spectral behaviour of some quinoline-type alkaloids, 3,4-dihydro-2H,5H-pyrano[3,2-c]quinolin-5-ones, isomeric 3,4-dihydro-2H,5H-pyrano[2,3-b]quinolin-5-ones and 2H,5H-pyrano[3,2-c]quinolin-5-ones, was studied in detail with the aid of linked scans, exact mass measurements and collisional spectrometry. The occurrence of a partial isomerization of the differently annulated isomers to a common, open-chain structure is discussed.
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