Pyrazoloquinolinone derivatives, preparation thereof and therapeutic use thereof

A compound corresponding to formula (I):

• in which:
• R1 represents:
• —(C1-C4)alkyl
• (C1-C4) haloalkyl
• R2 represents:
• a group:
• a group:
• a group;
• -A—X
• R3 represents:
• —H
• halogen
• —(C1-C6)alkyl
• a cyano group
• —CO2H
• —CONH2
• A represents:
• an aryl or heteroaryl group
• X is absent or represents:
• halogen
• a cyano group
• an oxo group
• —(CH2)nOH
• —(C1-C6)haloalkyl
• —(C1-C6)alkyl
• —(C1-C6)alkoxy
• —(CH2)n-aryl
• —CHOH-aryl
• heterocycle
• heteroaryl
• —(C1-C6)alkyl-heterocycle
• —(C1-C6)alkyl-heteroaryl
• —(C1-C6)alkyl-COORa
• —(C1-C6)alkyl-NRaRb
• -heteroaryl-(CH2)n-NRaRb
• —(CH2)n-NRa-C(O)—Rb
• —NRaRb
• —NRa-(CH2)n-O—Rb
• —NRa-heterocycle
• —NRa-aryl
• —NRa-C(O)—(CH2)n-NRaRb
• —NRa-C(O)-aryl
• —NRaC(O)—(C1-C6)alkyl
• —NRa-C(O)—(C1-C6)alkyl-aryl
• —NRa-C(O)—(CH2)n-O—Rb
• —NRa-SO2-(CH2)n-aryl
• —NRa-SO2-(CH2)n-NRaRb
• —NRa-SO2-Rb
• —NRa-SO2-aryl-O-aryl
• —NRa-SO2-aryl-(CH2)n-NRb-C(O)—Rb
• —COORa
• —CONRaRb
• —C(O)—NRa-(CH2)n-O—Rb
• —C(O)—NRa-aryl-C(O)—NRaRb
• —C(O)—NRa-(CH2)n-NRaRb
• —C(O)—NRa-(CH2)n-heteroaryl
• —O—(CH2)n-NRaRb
• —O-heterocycle
• —CO-heterocycle
• —CO-heteroaryl
• —SO2NRaRb
• —SO2-heterocycle
• Ra and Rb represent, independently:
• —H
• —(C1-C6)alkyl
• n represents 0, 1, 2 or 3
• in the form of the base or of an acid-addition salt, and also in hydrate form.