| abstract |
Compounds of ** formula ** in which R1 represents hydrogen or a C1-6-aminocarbonyl dialkyl moiety, R2 represents a moiety of formula ¿O-CX-NR3R4, in which X represents O or S, R3 and R4 can be same or different from each other and represent a group moiety consisting of H, C1-6 alkyl, which if necessary carries a CN substituent or a halogen substituent, C1-6 alkoxy-C1-6 alkyl, hydroxy C1-6 alkyl, alkenyl C2-6, C1-6 alkylcarbonyloxyalkyl C1-6, C1-6 alkoxycarbonylalkyl C1-6, hydroxycarbonylalkyl C1-6, phenyl, p-tolyl, a saturated five to seven membered heterocycle linked by a C1-alkane moiety 6-diyl to the nitrogen atom with up to 2 oxygen atoms or C3-8 cycloalkyl, and R3 and R4 cannot simultaneously be H, or R3 and R4 together with the nitrogen atom to which they are attached, form a saturated heterocycle of five or six members, which if necessary contain another heteroatom from the group of N, O, S and / or, if necessary, may contain a substituent alkylcarbonyloxy alkoxycarbonyl; as well as salts, isomers and hydrates thereof. |