Patent ID: 6846843

Claim:
A compound of formula I, wherein R 1 and R 2 is phenyl, thiophenyl, or C 3-8 -cycloalkyl, in each case unsubstituted or singly or multiply substituted; or one of R 1 and R 2 is branched or unbranched C 1-6 -alkyl, saturated or unsaturated, unsubstituted or singly or multiply substituted, and the other one of R 1 and R 2 is branched or unbranched C 3-10 -alkyl, unsubstituted or singly or multiply substituted and R 1 is H; C 1-10 -alkyl that is saturated or unsaturated, branched or unbranched, singly or multiply substituted or unsubstituted; C 3-8 -cycloalkyl that is saturated or unsaturated, unsubstituted or singly or multiply substituted; aryl or heteroaryl, in each case unsubstituted or singly or multiply substituted; or aryl, C 3-8 -cycloalkyl or heteroaryl bound by saturated or unsaturated C 1-3 -alkyl and in each case unsubstituted or singly or multiply substituted; in the form of a racemate, enantiomer, diastereomer, a mixture of the enantiomers or diastereomers thereof, physiologically compatible acidic and basic salt, a salt with a cation or a base or with anions and/or acids or in the form of a free acid or base.