| abstract |
Products of formula (ID), in which R1 is hydrogen, carboxy, formyl, alkyl, hydroxyalkyl, alkoxyalkyl, carbamoyl, N-alkyl-carbamoyl, NNdialkylcarbamoyl, alkoxycarbothioate or alkylcarbonyl, V1 is oxygen or -NH-, V2 is -V1H or hydrogen and A is optionally substituted alkyl or aryl, the products of formula (ID) being in all the possible isomeric forms. The invention also concerns the acid addition salts and bases of the products of formula (ID). |