Pyrroloazepine compound

A pyrroloazepine compound represented by the following formula (I) or (II):

• ##STR70## wherein the dashed line indicates the presence or absence of a bond and when the bond indicated by the dashed line is present, Z.sub.1 represents a hydrogen atom but, when the bond indicated by the dashed line is absent, Z.sub.1 represents a hydrogen atom and Z.sub.2 represents a hydroxyl group or Z.sub.1 and Z.sub.2 are taken together to form an oxygen atom or a group NOR.sub.1, in which R.sub.1 represents a hydrogen atom, an alkyl group, a substituted or unsubstituted aryl group or a substituted or unsubstituted aralkyl group;
• R represents an alkyl group, a cycloalkyl group, a cycloalkyl-alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group;
• A represents an alkylene, alkenylene or alkynylene group;
• and Y represents a substituted or un- substituted heterocyclic group or a group:
• ##STR71## in which R.sub.2 and R.sub.3 may be the same or different and individually represent a hydrogen atom, an alkyl group (which may be substituted by a lower alkoxy group or a substituted or unsubstituted aryloxy group), a substituted or unsubstituted aryl group or a substituted or unsubstituted aralkyl group;
• or a salt thereof.