Heterocyclic compounds, their production and use

Abstract From the Canadian patent

A compound of the formula: I', wherein ring A is an optionally substituted benzene ring; ring B' is an optionally substituted nonaromatic heterocyclic ring having, the same or different, two or more hetero atoms; R1 is a hydrogen atom or an optionally substituted hydrocarbon group which may, be different from one another in the repetition of n; Y is an optionally substituted amino group or an optionally substituted N-containing saturated heterocyclic group; n denotes an integer of 1 to 10 provided that, when the ring B' is a 5- to 7-membered ring the ring, B' contains at least one nitrogen atom as hetero atom and n denotes an integer of 2 to 10, or a salt thereof. The compounds and salts …