Abstract: The invention concerns benzodiazepine derivatives of Formula I: wherein W, X, L1, L2, L3, R1, R2, R3, R4, R5, R6 and R7 are as defined in the description. The present invention also relates to processes for the preparation of such compounds, pharmaceutical compositions containing them and their use in the treatment or prophylaxis of hepatitis C virus infection.

Abstract: A quinazoline derivative of formula (I), or a pharmaceutically acceptable salt thereof: formula (I) for use in treatment of prevention of a flaviviridae infection.

Abstract: Compounds of formula (Ia) are found to be active in inhibiting replication of flaviviridae viruses, wherein R1, R2, R3 and R4 are as defined in the claims.

Abstract: Compounds of formula (Ia) are found to be active in inhibiting replication of flaviviridae viruses (Ia), wherein R1 and R2 are the same or different and represent hydrogen, halogen, -L-O—R3, -L-O-L-A or -L-O-L?-A?, wherein each L is the same or different and represents a direct bond or a C1-C4 alkylene group; L? represents a direct bond or a C2-C4 alkylene group; R3 represents hydrogen, C1-C4 alkyl or C1-C4 haloalkyl; A represents a 5- to 10-membered heterocyclyl group; and A? represents a C6-C1 aryl group; wherein at least one of R1 and R2 is -L-O—R3, -L-O-L-A or -L-O-L?-A?.