Abstract:
A compound of formula I-0, and its pharmaceutically acceptable salt or salts and physiologically hydrolysable derivatives in free form or salt form: wherein Z 1 is C 1 -C 4 linear or branched alkyl or alkenyl; R 4 is selected from unsubstituted and substituted C 3 -C 8 cycloalkyl, C 1 -C 8 linear or branched alkyl, C 2-5 alkenyl, C 6 -C 10 heteroaryl or aryl, or C 3 -C 8 heterocyclyl which may be part unsaturated, and combinations thereof; is linear C 2-3 alkylene,; X 1 is selected from NH and O; X 2 is selected from unsaturated C and unsaturated S; and X 3 is selected from NH and CH 2 ; or one of X 1 and X 3 is a single bond; or X 1 is O and X 2 and X 3 together are a single bond; and R 7 is selected from oxo, F, Cl, Br, CN, NH 2 , NR 9 2 , NO 2 , CF 3 , OR 9 , COR 9 , OCOR 9 , COOR 9, NR 9 COR 9 , CONR 9 2 SO 2 NR 9 2 , NR 9 SO 2 R 9 ; and R 8 is selected from C 1-5 alkyl, C 1-5 alkoxyl, C 2-5 alkenyl or alkynyl, C 6-10 ) aryl and C 3-8 cycloalkyl and combinations thereof, which may be unsubstituted or f urther substituted by one or more F, Cl, Br, CN, NH 2 , NR 3 2 , NO 2 , CF 3 ; and R 9 is selected from H and a group R 8 as hereinbefore defined; n7 and n8 and the sum thereof are independently selected from zero and the whole number integer 1 to 4; processes for the preparation thereof, compositions and uses.