prov:value
| - a ##STR32## wherein R8 is a hydrogen atom, alkoxy, aminocarbonyl, carboxy, alkoxycarbonyl, alkylcarbonyl, alkyl optionally substituted by from 1 to 3 substituents selected among fluorine, chlorine or bromine atoms, hydroxy, cyano, alkoxy, mercapto, C3 -C6 cycloalkyl optionally substituted by 1 or 2 chlorine atoms, amino, mono or dialkylamino, formylamino, aminocarbonyl, alkylthio, alkylsulfinyl,
|