Characteristic ortho-methoxycarboxylate fragmentation of yerrinquinone and its derivatives on electron impact
β Scribed by M. Vairamani; B. Nageswara Rao; M. Pardhasaradhi
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 269 KB
- Volume
- 26
- Category
- Article
- ISSN
- 1076-5174
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β¦ Synopsis
Mass spectrometry of a natural product, yerrinquinone, isolated from fungal-infested Diospyros montunu, and isomeric 1-tetralonecarboxylates has revealed fragmentation pathways characteristic of a methoxy group flanked by a carboalkoxy and a carbonyl group.
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## Abstract A study has been made of the fragmentation upon electron impact of thieno(2,3β__b__)quinoline and sixteen of its derivatives containing methoxy, methylenedioxy, chloro, bromo, iodo, nitro and methyl substituents. Besides these, the fragmentation patterns of some __S__βoxides, and __S,S_