SPIROHETEROCYCLIC SYSTEMS .2. NEW BIOLOGICALLY-ACTIVE SPIRO-SULFAMOYLNAPHTHENES

Some new spirosulphonamoyl naphthenes have been prepared and bilogical ly evaluated. Thus, condensation of 1-oxa-4-thiaspiro[4,4]nonan-2-one, [4,5]-decan-2-one and 5-methyl-1--oxa-4-thiaspiro[4,5]decan-2-one wit h substituted sulphonamide giving the title systems (Ia-1 - IIIa-1), r espectively. All the prepared compounds have been screened in vitro fo r studying the antibacterial and antifungal activities. The structure of the prepared compounds was illustrated by means of spectroscopic an alysis and the application of the reactions on chromatoplates.