Synthesis and properties of thiocarbamoylmethylpyridinium (isoquinolinium) ylids
β Scribed by V. S. Berseneva; V. A. Bakulev; V. S. Mokrushin; A. T. Lebedev
- Book ID
- 104781634
- Publisher
- Springer US
- Year
- 1989
- Tongue
- English
- Weight
- 381 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0009-3122
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## Abstract New type pyrazolβ3βylβisoquinolinium hydrochloride (**8a**) and tetrazolβ5βylβisoquinolinium (**8b**) zwitterions were synthesised. Their structures were proved by ir, pmr, cmr, ms spectra as well as Xβray diffraction analysis of model compounds.
Papaverine is a drug that can be easily oxidized to papaverinol, papaveraldine and to recently discovered 2,3,9,10-tetramethoxy-12-oxo-12H-indolo[2,1-a]isoquinolinium chloride. In a strong alkaline medium the spectroscopic properties of this latter compound are modified indicating formation of a new