Quinoline-2-one derivatives for the treatment of airways diseases

A compound of formula I:

• in free or salt form, where
• R1 is hydroxy and R2 is hydrogen;
• G is a group having the formula Ib:
• C˜C denotes C═C or CH—CH;
• R7 and R8 are both hydrogen;
• R9 and R10 are independently selected from the group consisting of hydrogen and C1-C10 alkyl, or R9 and R10 together form a C3-C10 cycloalkyl or C3-C10 cycloalkenyl, and in either case wherein R9 and R10 are optionally substituted by C1-C10 alkyl;
• and
• R11 is a C3-C15 carbocyclic group or C1-C10 alkyl substituted by a C3-C15 carbocyclic group.