Substituted 1-aryl-but-3-enylamine and 1-aryl-but-2-enylamine compounds

Substituted 1-aryl-but-3-enylamine and 1-aryl-but-2-enylamine compounds of the formula I,

• in which
• R1 and R2, identical or different, denote a C1-6 alkyl group or together form a ring as (CH2)2-6, which may also be substituted or benzo-fused with at least one optionally at least mono-substituted aryl or heteroaryl group,
• R3 denotes a C3-6 alkyl, a C3-7 cycloalkyl, an optionally at least mono-substituted aryl or heteroaryl group or an optionally at least mono-substituted aryl or heteroaryl group attached via a C1-3 alkylene group,
• R4 and R5, identical or different, denote a C1-6 alkyl, a C3-7 cycloalkyl, a phenyl, a benzyl or a phenethyl group or R4 and R5 together form a ring as (CH2)3-6 or —CH2—CH2—O—CH2—CH2,
• X and Y or Y and Z together denote a bond,
• A denotes an optionally at least mono-substituted aryl or heteroaryl group,
• in the form of the racemates, diastereomers or enantiomers thereof as a free base or a corresponding physiologically acceptable salt.