| abstract |
Compounds of formula (Ia) were found to be active in inhibiting the replication of Flaviviridae viruses: {Wherein R 1 and R 2 are the same or different and each represents hydrogen, halogen, -LOR 3 , -LOLA or -LO-L'-A '; Wherein L is the same or different and each represents a direct bond or a C 1 -C 4 alkylene group; L ′ represents a direct bond or a C 2 -C 4 alkylene group; R 3 represents hydrogen, C 1 -C 4 alkyl or C 1 -C 4 haloalkyl; A represents a 5- to 10-membered heterocyclyl group; and A ′ represents a C 6 -C 10 aryl group; Wherein at least one of R 1 and R 2 is -LOR 3 , -LOLA or -L-L'-A '}. |