Azabicyclo compound and salt thereof

摘要

Disclosed is a novel azabicyclo compound which has both HSP90 inhibitory activity and cell proliferation inhibitory effect. Specifically disclosed is a compound represented by general formula (I) or a salt thereof. (In the formula, X represents CH or N; one of X, X and X represents N, and the others respectively represent CH; one or two of Y, Y, Y and Y respectively represent C-R, and the others may be the same or different and respectively represent CH or N; R represents an optionally substituted monocyclic or bicyclic unsaturated heterocyclic group that has 1-4 heteroatoms selected from among N, S and O; R represents an alkyl group having 1-6 carbon atoms, or the like; and R and R respectively represent -CO-R or the like.)