Patent ID: 6492502
Filing Date: 2002-12-10
Classification: A61K,A61Q,C07C

Abstract:
An azo compound of formula (I) or the acid addition salt thereof: in which:R1 and R2, independently of each other, represent a hydrogen atom; a C1-C6 alkyl radical; a 5- or 6-membered cycloalkyl radical; a 5- or 6-membered aromatic ring; a 5- or 6-membered aromatic ring substituted with a C1-C6 alkyl radical, a halogen atom, an amino radical, a hydroxyl radical, or a C1-C6 alkoxy radical; or R1 and R2 form, together with the nitrogen atom to which they are attached, a 4- to 8-membered heterocycle, said heterocycle containing one or more hetero atoms chosen from sulfur, nitrogen and oxygen; R3 and R4, independently of each other, represent a hydrogen atom, a C1-C6 alkyl radical, a C1-C6 monohydroxyalkyl radical or a C2-C6 polyhydroxyalkyl radical; and A is a 5- to 6-membered aromatic ring which can be interrupted by one or more hetero atoms chosen from sulfur, nitrogen and oxygen, or fused to another 5- to 6-membered aromatic ring.