Patent ID: 7256211

Claim:
A compound represented by formula (I) wherein is a single bond or a double bond, is α-configuration, β-configuration or a voluntary mixture of α-configuration and β-configuration, D is —COOR 1 , R 1 is hydrogen or C1–4 alkyl, G is ringA, ringA is Y is —S—, T is oxygen or sulfur, X is —CH 2 —, ringB is, wherein R 3 is (1) a halogen atom, (2) C1–4 alkyl optionally substituted with 1–5 of halogen atom(s), (3) C1–4 alkoxy optionally substituted with 1–5 of halogen atom(s), (4) C1–4 alkyl substituted with C1–4 alkoxy, (5) phenyl or (6) 3- to 15-membered mono-, bi- or tri-heterocyclic aryl containing 1 to 4 hetero atom(s) selected from the group consisting of oxygen, nitrogen and sulfur atom(s) which may be partially or fully saturated, and (5) phenyl or (6) heterocyclic aryl in R 3 is optionally substituted with 1–3 of (a) halogen atom(s), (b) C1–4 alkyl, (c) C1–4 alkoxy and/or (d) nitro, q is 0 or an integer of 1–5, when q is 2 or more, plural R 3 's are the same or different, and n is an integer of 1–4, a salt thereof, a solvate thereof, a cyclodextrin clathrate thereof, or a prodrug thereof.