Substituted condensed heterocyclic compounds

摘要

Described is a substituted fused heterocyclic compound which is represented by the following formula: Äwherein R<1> represents a group of the following formula: (in which R<4>: a substituted phenyl or a pyridyl which may have a substituent, R<5>: a hydrogen atom or the like, R<6>: a hydrogen atom, a C1-6 alkyl group or the like, D: an oxygen or sulfur atom, E: a CH group or a nitrogen atom, R<2>: a hydrogen atom or the like, R<3>: a 2,4-dioxothiazolidin-5-ylmethyl group or the like; A: a C1-6 alkylene group, and B: an oxygen or sulfur atomÜ or a pharmacologically acceptable salt thereof; and has excellent insulin-resistance improving action, lipid-peroxide-production inhibitory action, 5-lipoxygenase inhibitory action and the like.