| abstract |
Disclosed are compounds of formula (I) or the pharmaceutically acceptable salts thereofnwherein: G represents a group of the formula (a), (b) or (c) where R a and R b representnhydrogen, or organic or inorganic substituents; A is an optionally substituted alkylene; R 1 , R 2 ,nR 3 , R 4 represent organic or inorganic substituents;nR 5 is hydrogen or lower alkyl; R 6 and R 7 nindependently represent hydrogen, lower alkyl; or together form a ring of 5-8 members; Z isnnitrogen or carbon; and W is optionally substituted aryl or heteroaryl. |