NOVEL BISOXADIAZOLIDINE DERIVATIVE

摘要

A bisoxadiazolidinedione derivative of general formula (I) useful as an insulin-sensitivity improver, a pharmaceutically acceptable salt thereof, and a medicinal composition thereof, wherein (a) and (b) may be the same or different from each other and each represent an optionally substituted phenylene group, and L represents: (1) an oxygen atom, (2) a group of formula (II) (R<1> being a hydrogen atom or a lower alkyl group), (3) a group of the formula: -S(O)n- (n being 0, 1 or 2), (4) a group of the formula: -CO-, (5) a group of formula (III) or (IV) (R<2> being a hydrogen atom or a lower alkyl group), or (6) an alkylene or alkenylene group which may be substituted and interrupted by an oxygen atom and/or a sulfur atom, and the like.