Patent ID: 8835481

Claim:
A compound of formula (I) wherein: A is —X 1 — or —X 1 —OC(R 9 )(R 10 )—, wherein X 1 is an alkyl group having from 1 to 5 carbon atoms, optionally substituted with one or more alkyl groups having from 1 to 5 carbon atoms or one or more alkoxy groups having from 1 to 3 carbon atoms, and R 9 and R 10 , which are identical or different each other, are hydrogen, an alkyl group having from 1 to 5 carbon atoms or an alkoxy group having from 1 to 3 carbon atoms, Y is OH R 1 and R 2 , which are identical or different each other, are hydrogen, an alkyl group having from 1 to 5 carbon atoms or an alkoxy group having from 1 to 3 carbon atoms, R 3 , R 4 and R 8 , which are identical or different each other, are hydrogen, an alkyl group having from 1 to 5 carbon atoms, an alkoxy group having from 1 to 3 carbon atoms, a halogen atom, —OH, —N(R′)(R″), —N(R′)COR″, —CN, —CONR′R″, —SO 2 NR′R″, —SO 2 R′, or nitro and trifluoromethyl, wherein R′ and R″ are identical or different each other, and are represented by hydrogen and an alkyl group having from 1 to 5 carbon atoms, R 5 is hydrogen, an alkyl group having from 1 to 5 carbon atoms, an alkoxy group having from 1 to 3 carbon atoms, a halogen atom, —OH, —N(R′)(R″), —N(R′)COR″, or nitro and trifluoromethyl, or R 5 together with one of R 6 and R 7 forms a ring having 5 or 6 carbon atoms, wherein R′ and R″ are identical or different each other, and are represented by hydrogen and an alkyl group having from 1 to 5 carbon atoms, R 6 and R 7 , which are identical or different each other, are hydrogen, or an alkyl group having from 1 to 5 carbon atoms, or R 6 and R 7 together form a group C═O, or one of R 6 and R 7 , together with R 5 , forms a ring having 5 or 6 carbon atoms, wherein when A is an unsubstituted methylene group or a methylene group substituted with one or more alkyl groups having 1 to 5 carbon atoms, at least one of R 3 to R 8 is not a hydrogen, or a pharmaceutically acceptable salt thereof, an ester thereof or a prodrug thereof.