| abstract |
Compounds of formula (i) wherein: ak1 represents an alkyl chain, x represents - (ch2) m-, -ch (r) -, -n (r) -, - ch2-n (r) -, -n ( r) -ch2-or -ch2-n (r) -ch2-, m and r are as defined in the description, r1 and r2 each represent h when x is - (ch2) m-, -ch (r) - , -n (r) -, -ch2-n (r) - or -n (r) -ch2-, or together form a bond when x is -ch2-n (r) -ch2-, r3 is nh2, cy-nh2, cy-ak3-nh2 or piperidin-4-yl, cy and ak3 are as defined in the description, r4 and r5, which are identical or different, each represent h or f, their optical isomers, and also their salts; addition to a pharmaceutically acceptable acid. Drugs. |