6,7-nonsubstituted and 6,7-disubstituted-3,4-dihydroxy benzopyran-2H-one compounds having antiaggregatory properties and processes for their preparation

摘要

The present invention relates to novel benzopyranone aci-reductone compounds of the formula I wherein X and Y are selected from the group comprising H (except that X and Y are not both H, unless otherwise indicated) Cl or other halogen, OH, a straight or branched C114 C6 alkyl or alkoxy group or phenyl or phenyloxy groups, such as, for example a phenyl or a tertiary butyl group. The invention also provides for compounds of the general formula I wherein X, Y=OCH2O. <IMAGE> I