Benzimidazole derivatives of formula (I): (Formula (I)) wherein: R1 is —；(CH2)m—；R7, (Formula (II)) or (Formula (III))； R2 is H, halo, —；(CH2)m—；NH2, —；(CH2)n—；C(═；NH)—；NH2 or —；(CH2)n—；NH—；(CH2)m—；NHR9； R3 is H, F or Cl； each of R4, R5 and R6 is independently H or F； R7 is C1-C6 alkyl, CF3, —；SO2R11, —；NH—；(CH2)2—；(NH)r—；R8, —；NH—；CH(R8R9) or a group of the following formula (A): (Formula (A)): W is —；(CH2)m, —；CH2—；O—；CH2—；, —；CH2—；S—；CH2—；, —；(CH2)r—；S(O)2—；CH2—； or —；(CH2)r—；NR8—；CH2—；； m is an integer of 1 to 3； n is 1 or 2； p is 1 and V is CH； or p is 0 and V is N； q is 0 or 1； r is 0 or 1； R is H, —；SO2R11, —；SO2CF3, —；COR11, —；C(O)OR11, —；CON(R9)2 or —；(CH2)nSO2R11； R9 is H or C1-C6 alkyl, each R9 being the same or different when two are present； R10 is —；SO2R11, —；SO2CF3, —；COR11, —；CON(R9)2 or —；(CH2)nSO2R11； and R11 is C1-C6 alkyl； and the pharmaceutically acceptable salts thereof are inhibitors of RSV and can therefore be used to treat or prevent an RSV infection.
