Synthesis and antibacterial activity of benzo[4,5]isothiazolo[2,3-a]pyrazine-6,6-dioxide derivatives

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Bassin, J.P., Botha, M., Garikipati, R., Goyal, M., Martin, L. ORCID: 0000-0002-5330-5700 and Shah, A., 2017. Synthesis and antibacterial activity of benzo[4,5]isothiazolo[2,3-a]pyrazine-6,6-dioxide derivatives. Molecules, 22 (11), p. 1889. ISSN 1420-3049

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Official URL: http://doi.org/10.3390/molecules22111889

Abstract

Using a routine procedure, a number of derivatives of the benzo[4,5]isothiazolo[2,3-a]pyrazine-6,6-dioxide ring system have been synthesized from readily available starting materials. A series of chalcones were synthesized, which were subsequently reacted with chlorosulfonic acid to generate chalcone sulfonyl chlorides. The chalcone sulfonyl chlorides were then treated with bromine to generate dibromo chalcone sulfonyl chlorides. These were subsequently reacted with 1,2-diaminopropane and 2-methyl-1,2-diaminopropane in boiling ethanol resulting in compounds 2–10 and 11–19 respectively, in 12–80% yields. The products were characterized by spectral analysis and the definitive structure of compound 11 was determined by X-ray crystallography. The synthesized compounds were screened for potential antibacterial properties against Bacillus subtilis, Escherichia coli, Proteus vulgaris and Staphylococcus aureus.

Item Type:

Journal article

Publication Title:

Molecules

Creators:

Bassin, J.P., Botha, M., Garikipati, R., Goyal, M., Martin, L. and Shah, A.

Publisher:

MDPI

Date:

4 November 2017

Volume:

Number: