Patent ID: 7598293

Claim:
A compound of the formula (I) wherein R 1 represents hydrogen, hydroxy, halogen, linear or branched (C 1 -C 12 ) alkyl, linear or branched (C 1 -C 12 ) alkoxy, or arylalkyl; R 2 represents hydrogen, halogen, linear or branched (C 1 -C 12 ) alkyl, linear or branched (C 1 -C 12 ) alkoxy, (C 1 -C 12 ) alkanoyl, aryl, arylalkanoyl, or arylalkyl; R 3 represents hydrogen, linear or branched, (C 1 -C 12 )alkyl, cycloalkyl, cycloalkylalkyl, cycloalkenyl, aryl, (C 1 -C 12 )alkanoyl, aroyl, arylalkyl, arylalkanoyl, alkoxyalkyl, alkoxycarbonyl, aryloxycarbonyl, alkylaminocarbonyl, or arylaminocarbonyl; R 4 represents hydrogen or linear or branched (C 1 -C 12 ) alkyl; Y represents oxygen; R 5 represents hydrogen or alkyl, alkenyl, cycloalkyl, cycloalkylalkyl, aryl or arylalkyl; Ar represents divalent phenylene or diva lent naphthylene; X represents a bond; R 6 represents hydrogen or group of the structure —OSO 2 R 8 or —NR 8 SO 2 R 9 , R 13 represents hydrogen or group of the structure —OSO 2 R 8 or —NR 8 SO 2 R 9 , wherein R 8 and R 9 , which are the same or different, independently represent hydrogen, alkyl, aryl, arylalkyl, alkoxycarbonyl or arylalkoxycarbonyl, with the proviso that R 6 is hydrogen only when R 13 is not hydrogen and is in the third position of the phenyl ring; and n is 1 to 6, and m is 0 to 6; and pharmaceutically acceptable salts of the compound of the formula (I).