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Report | Regular issue | Vol 23, No. 12, 1985, pp.3009-3014
Published online, 1st January, 1970
DOI: 10.3987/R-1985-12-3009
Idenfication of Isomeric 2-Dialkylaminoethylthio-thieno[2,3-c] and [3,2-d]Isothiazoles with Antifungine Activity by Electron Impact Mass Spectrometry

Pasquale Agozzino,* Ennio Bousquet, Leopoldo Ceraulo, and Giuseppe Romeo

*Instituto di Chimica Farmaceutica e Tossicologica, Università digli Studi di Palermo, Via Archirafi 32, 90123 Palermo, Italy


The EI mass spectra of sixteen title compounds were studied. The 5-acyl and the 2-dialkylaminoethylthio substituents are responsible of the main fragmentation processes of thieno[2,3-c] and thieno[3,2-d]isothiazoles. An easy criterion of distinction between the two types of heterocyclic compounds results from the comparison of the relative abundances of some ionic species.