Patent ID: 8653134

Claim:
A compound of formula (1) : in which: R 1 represents —O—R′ 1 or —NR′ 1 R″ 1 , with R′ 1 and R″ 1 , which may be identical or different, being a hydrogen atom, an alkyl radical, an alkenyl radical, an alkynyl radical, a cycloalkyl radical, an aryl radical or a heteroaryl radical; A represents a linear or branched, saturated or unsaturated divalent hydrocarbon-based radical containing from 1 to 10 carbon atoms; R 2 is: propyl, isopropyl, butyl, isobutyl, tert-butyl, pentyl, isopentyl, neopentyl, 2-methylbutyl, 1-ethylpropyl, hexyl, isohexyl, neohexyl, 1-methylpentyl, 3-methylpentyl, 1,1-dimethylbutyl, 1,3-dimethylbutyl, 1-ethylbutyl, 1-methyl-1-ethylpropyl, heptyl, 1-methylhexyl, 1-propylbutyl, 4,4-dimethylpentyl, octyl, 1-methylheptyl, 2-methylhexyl, 5,5-dimethylhexyl, nonyl, decyl, 1-methylnonyl, 3,7-dimethyloctyl, 7,7-dimethyloctyL alkenyl or alkynyl; an optionally substituted cycloalkylalkyl radical; or an optionally substituted heterocyclylalkyl radical; X is chosen from an oxygen atom and a sulfur atom; Y and Z, which may be identical or different, are independently of each other, a hydrogen atom, a halogen atom, an alkyl radical and a radical —O—R 3 , —C(O)—R 3 , —C(O)—NHR 3 or —C(O)—NR 3 R 4 ; or Y and Z together form, with the carbon atoms that bear them, a 5-membered ring comprising a ketone function; and R 3 and R 4 , which may be identical or different, are independently of each other, a hydrogen atom and an alkyl radical, or R 3 and R 4 together form, with the nitrogen atom that bears them, an optionally substituted heterocycle; or optical isomersor oxides thereof, or pharmaceutically acceptable addition salts thereof with acids or bases.