| 摘要 |
A compound represented by the formula (I):
wherein
Ar is an optionally substituted aromatic ring;
Xa, Xc, Ya, Yc, Z 1 and Z 2 are each a bond, O, S, -CO-, -CS-, - CR 3 (OR 4 ) -, -NR 5 -, -SO-, -SO 2 -, -CONR 6 - or -NR 6 CO- (wherein R 3 , R 4 , R 5 and R 6 are as defined in the specification);
Xb and Yb are each a bond or a divalent hydrocarbon group having 1 to 20 carbon atoms;
R 1 is an optionally substituted hydrocarbon group;
ring A is an optionally further substituted aromatic ring, provided that the ring should not be benzimidazole;
n is an integer of 1 to 8;
ring B is an optionally further substituted aromatic ring, provided that the ring should not be oxazole;
W is a divalent saturated hydrocarbon group having 1 to 20 carbon atoms; and
R 2 is -OR 8 or -NR 9 R 10 (wherein R 8 , R 9 and R 10 are as defined in the specification)
or a salt thereof,
is useful as an agent for the prophylaxis or treatment of diabetes and the like.
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