| abstract |
(57) [Summary] [Structure] Formula (I) And a salt thereof, a pharmaceutical composition containing them, and a process for producing them (wherein A is an N-containing heterocyclic group, W is an oxygen or carbonyl group, R 1 a hydroxyl group or an ester group or various substituted amide group, X-Y is, CH 2 -CH 2, C H = CH, represents a O-CH 2 or NH-CH 2,. [Effect] This compound has high safety and is useful as an excellent agent for lowering blood glucose and blood lipid. |