Urea derivatives of the formula: <IMAGE> wherein R1, R2 and R3, which are the same or different, each represent a straight- or branched-chain alkyl, alkenyl or alkynyl radical having from 1 to 5 carbon atoms, R4 and R5, which are the same or different, each represent a hydrogen atom or a straight- or branched-chain alkyl, alkenyl or alkynyl radical having from 1 to 5 carbon atoms, R1, R2 and R3 being such that: (a) only one of these radicals can represent an alkenyl or alkynyl group having an unsaturated bond in the alpha , beta -position with respect to the methylurea radical, in this case, each of the other two substituents represents an alkyl radical, (b) the sum of their carbon atoms is never inferior to 4. They are useful as anxiolytic and antiagressive agents.
Urea derivatives to treat anxiety and aggressivity