Patent ID: 7098247

Claim:
A compound of the general formula I wherein A represents phenylene; R 1 represents alkyl, alkenyl, alkynyl which are all optionally substituted; or —CH 2 —(O—CH 2 CH 2 —) m O-alkyl; or —(CH 2 ) n —O-alkyl; or —(CH 2 ) n —C(O)—NH-alkyl; or —(CH 2 ) n —NH—C(O)-alkyl; or —(CH 2 ) n —C(O)alkyl; or —(CH 2 ) n —C(O)—O-alkyl; or —(CH 2 ) n —O—C(O)-alkyl; or a group —NR 3 R 4 , wherein R 3 and R 4 independenfly represent hydrogen; or alkyl, alkenyl or alkynyl which are all optionally substituted; or —CH 2 —(O—CH 2 CH 2 ) m O-alkyl; or —(CH 2 ) n —(O)-alkyl; or —(CH 2 ) n —C(O)—NH-alkyl; or —(CH 2 ) n —NH—C(O)-alkyl; or —(CH 2 ) n —C(O)-alkyl; or —(CH 2 ) n —C(O)alkyl; or —(CH 2 ) n —C(O)—O-alkyl; or —(CH 2 ) n —O—C(O)-alkyl; n is 1–6; m is 1–4; or pharmaceutically acceptable salts thereof.