| 摘要 |
A novel condensed ring compound having the activity of regulating GPR40- receptor function and being useful as an insulin secretion promoter or as a preventive/therapeutic agent for diabetes mellitus, etc. More specifically, a condensed ring compound of the formula: (I) [wherein: Ar is a substituted or unsubstituted cyclic group; ring A is a further substituted or unsubstituted ring (provided that the ring is none of thiazole, oxazole, imidazole and pyrazole); each of Xa and Xb independently is a bond or a spacer of 1 to 5 main chain atoms; Xc is O, S, SO or SO2; is or ; ring B is a 5 to 7-membered ring; Xd is a bond, CH or CH2; ...... is a single bond when Xd is a bond or CH2, and a double bond when Xd is CH; and R1 is a substituted or unsubstitut ed hydroxyl] or a salt thereof.
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