Patent ID: 7008955

Claim:
A compound of formula in which the broken line represents a double bond which is optionally present, X is NH, NR 4 , O or S, R 1 is hydrogen, a linear or branched, substituted or unsubstituted C 1 –C 10 -alkyl group, substituted or unsubstituted C 5 –C 10 -aryl group, substituted or unsubstituted C 4 –C 10 -heteroaryl group, acyl group, thioacyl group, carbonylcarboxy group, N-organyl-substituted carbamoyl group or organosulfonyl group, R 2 , R 3 and R 4 are, independently of one another, a C 1 –C 10 -alkyl group, C 5 –C 12 -aryl group or C 4 –C 12 -heteroaryl group, these groups being unsubstituted or having one or more substituents which are, independently of one another, a halogen, alkoxy group, aryloxy group, nitro group, C 1 –C 5 -alkoxycarbonyl group, optionally fluorine-substituted alkyl or acyl group or cyano group, or a physiologically acceptable salt thereof.