Italfarmaco Spa

Roberto Barani

Francesca Benedini

Giorgio Bertolini

Alberto Sala

Gianni Gromo

Silvio Levi

Giancarlo Dona

Compounds of formula I ##STR1## wherein R represents hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.5 -C.sub.7 cycloalkyl, methylene-dioxy or phenyl, which may be substituted by one or two groups independently selected from hydroxy, halogen, nitro, C.sub.1 -C.sub.6 alkyl or C.sub.1 -C.sub.6 alkoxy; R.sub.1 and R.sub.2 independently represent hydrogen, COOR.sub.3, --CONR.sub.4 R.sub.5, ##STR2## --OCONR.sub.4 R.sub.5, --OCOR.sub.3, --NR.sub.4 R.sub.5, --OCOOR.sub.6, --NR.sub.3 COR.sub.7, --NR.sub.CONR.sub.4 R.sub.5, --N.dbd.CH--NR.sub.4 R.sub.5, NO.sub.2, CN, OH, SR.sub.3, wherein R.sub.3 is hydrogen or C.sub.1 -C.sub.6 alkyl, R.sub.4 and R.sub.5 independently are hydrogen or C.sub.1 -C.sub.6 alkyl, R.sub.6 is C.sub.1 -C.sub.6 alkyl, and R.sub.7 is hydrogen, C.sub.1 -C.sub.6 alkyl or C.sub.1 -C.sub.6 alkoxy, with the proviso that R.sub.1 and R.sub.2 cannot be hydrogen at the same time; X is oxygen or sulphur; Y represents a C.sub.2 -C.sub.6 alkylene chain or a C.sub.5 -C.sub.7 cycloalkylene group; and their pharmaceutically acceptable salts are provided and their use in pharmaceutical compositions which may be used in the treatment of cardiovascular diseases.

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Paderno Dugnano, Italy

Roberto Barani