The mass spectral fragmentation of isoxazolyldihydropyridines

Autor:	David A. Quincy, John I. McKenna, Nicholas R. Natale, Gary Knerr
Rok vydání:	1987
Předmět:	chemistry.chemical_compound Crystallography Fragmentation (mass spectrometry) Chemistry Stereochemistry Metastability Organic Chemistry Mass spectrum Dihydropyridine medicine Isoxazole Bond cleavage medicine.drug
Zdroj:	Journal of Heterocyclic Chemistry. 24:1429-1433
ISSN:	1943-5193 0022-152X
DOI:	10.1002/jhet.5570240541
Popis:	The mass spectral fragmentation of 4-isoxazolyl-1,4-dihydropyridines has been examined with the aid of linked metastable scanning. Three prominent pathways involve (i) O-N bond cleavage of the isoxazole followed by the loss of R2CN, (ii) loss of carboalkoxy from the 3- and/or 5- position of the dihydropyridine and, (iii) loss of the 4-isoxazolyl-substituent.
Databáze:	OpenAIRE
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