abstract |
A 4-hydroxquinoline compound has the formula (I) n n n n n n n n n n n n wherein A is selected from diradicals of the formulae (A.1), (A.2), (A.3), (A.4), (A.5), and (A.6) wherein R 1 , R 2a , R 2b , R 3 , if present R 4a , R 4b , R 5a , R 5b , R 6a , R 6b , R 6c , R 6d , R n1 , R n2 , R n3 , R n4 , R m5 , R m6 , R m7 , R m8 , R 7 , R 8a , R 9 are as defined in the description. |