1-hydrazino-3-thioxo-5,6,7,8-tetrahydroisoquinoline-4-carbonitrile (3) was subjected to react with bifunctional compounds namely: acetylacetone, ethyl cyanoacetate, ethyl benzoylactate, diethylmalonate and ethyl acetoacetate to produce pyrazololthienotetrahydroisoquinoline derivatives 6-11. Also, heating of compound (3) with formic acid afforded triazolothienotetrahydroisoquinoline compound 5 which reacted with α-halogenated compounds to afford compounds 13a-e. Compound 13c when heated with triethylorthoformate afforded triazolo derivative 14. Also, compound 6 was used for synthesizing compounds 18-20. Representative compounds of the synthesized triazolo and pyrazolothienotetrahydroisoquinoline products were tested and evaluated as antimicrobial agents.
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| http://dx.doi.org/10.1016/j.ejmech.2010.11.036 | DOI Listing |
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