Patent ID: 7781458

Claim:
A compound having formula I: where Q − represents the conjugate base of a pharmaceutically suitable organic or inorganic acid; R 1 and R′ 1 represent, independently of each other, a radical selected from the group formed by H and C 1-6 alkyl optionally substituted by trifluoromethyl, hydroxyl or alkoxyl; R 2 and R′ 2 represent, independently of each other, an aryl radical substituted by halogen, trifluoromethyl, hydroxyl, C 1-6 alkyl, amino or alkoxyl; R 3 and R′ 3 represent, independently of each other, either a radical selected from the group formed by H, halogen, trifluoromethyl, hydroxyl, amino, alkoxyl and C 1-6 alkyl optionally substituted by trifluoromethyl, hydroxyl, amino or alkoxyl, or together with R 4 and R′ 4 respectively, and independently of each other, a —CH═CH—CH═CH— radical optionally substituted by halogen, trifluoromethyl, hydroxyl, C 1-6 alkyl, amino or alkoxyl; R 4 and R′ 4 represent, independently of each other, either a radical selected from the group formed by H and C 1-6 alkyl optionally substituted by halogen, trifluoromethyl, hydroxyl, amino or alkoxyl, or together with R 3 and R′ 3 respectively, and independently of each other, a —CH═CH—CH═CH— radical optionally substituted by halogen, trifluoromethyl, hydroxyl, C 1-6 alkyl, amino or alkoxyl; and A represents a spacer group having the following formula: wherein m, n and p represent integers which can have the following values: m=1; n=0, 1-10; p=0, 1; with the condition that m, n and p do not take the value of zero at the same time.