| abstract |
2,3-dihydro-4H-1,3-benzoxazin-4-ones and 2,3-dihydro-4H-1,3-benzothiaxin-4-ones of formula I <CHEM> wherein R represents hydrogen, (C1-6)alkyl, (C5-7)cycloalkyl, phenyl, phenyl substituted by hydroxy, halogen, nitro, (C1-6)alkyl, (C1-6)alkoxy, methylenedioxy; R1 and R2 independently represent hydrogen, amide, amino, carboxy, hydroxy, nitro, ciano, mercapto; X is an oxygen or sulphur atom; Y is a (C2-6)alkylene chain or (C2-6)cycloalkylene group; and the pharmaceutically acceptable acid or basic salts thereof. |