abstract |
Disclosed are compounds of formula (I) or the pharmaceutically acceptable salts thereof wherein: G represents a group of the formula (a), (b) or (c) where Ra and Rb represent hydrogen, or organic or inorganic substituents; A is an optionally substituted alkylene; R1, R2, R3, R4 represent organic or inorganic substituents; R5 is hydrogen or lower alkyl; R6 and R7 independently represent hydrogen, lower alkyl; or together form a ring of 5-8 members; Z is nitrogen or carbon; and W is optionally substituted aryl or heteroaryl. |