| abstract |
The compound of formula (I) where n is 0, 1 or 2, R, R, R, R and R are selected from hydrogen, halogen, alkyl, alkoxy or the group (CH) -NRR, where p, R and R are as defined in the description or two adjacent R, R, R and R groups together form a —O- (CH) -O group, where t is an integer from 1 to 3, R, R, R and R represent a hydrogen atom, a hydroxy group or an alkoxy group, R, R, R and R 1 represents a hydrogen atom or alkyl, or the two groups together form an oxo group. |