Patent ID: 7247639

Claim:
A compound of formula (I): wherein; R 1 is C 1-8 straight or branched alkyl optionally substituted with one or more OR 5 , NR 6 R 7 , or halogen groups, wherein; R 5 and R 6 are independently H, or C 1-8 straight or branched alkyl; R 7 is H, C 1-8 straight or branched alkyl, or Alk 1 -OH, wherein; Alk 1 is C 1-8 straight or branched alkylene; R 2 is H, C 1-8 alkyl, Alk 2 COOH, Alk 3 COOR 8 , Alk 4 CONR 9 R 10 , Alk 5 OH, Alk 6 SO 3 H, Alk 7 PO 3 H 2 , Alk 8 OR 11 , Alk 9 OH or Alk 10 NR 12 R 13 , or, when R 3 is (CH 2 ) q (C 6 H 4 )Q, R 2 is as defined above or is Alk 11 N(CH 3 )Alk 12 OH; and when R 3 is other than (CH 2 ) q (C 6 H 4 )Q, R 2 is as defined above or is Alk 13 NR 14 R 15 ; wherein; Alk 2 through Alk 13 are independently C 1-8 straight or branched alkylene or alkenylene; q is an integer ranging from 1 to 8; Q is H, OH, NH 2 , (CH 2 ) t OH, or R 13a COOH, wherein t is an integer ranging from 1 to 8; R 8 through R 13 are independently H, or C 1-8 straight or branched alkyl; R 13a is C 1-8 straight or branched alkylene; R 14 is H, CH 3 , or (CH 2 ) p1 CH 3 ; R 15 is H, CH 3 , (CH 2 ) p2 CH 3 or (CH 2 ) m OH, wherein; p 1 and p 2 are independently integers from 1 to 7, and m is an integer from 1 to 8; R 3 is Alk 14 ArR 16 , wherein; Alk 14 is C 1-8 straight or branched alkylene or alkenylene; Ar is a 5- or 6-member aromatic ring containing 0 to 4 heteroatoms selected from N, O, and S, or is a bicyclic 9- or 11-member aromatic ring containing 0 to 6 heteroatoms selected from N, O, and S; R 16 is H, OH, OR 13b , NO 2 , NH 2 , CN, Alk 15 OH, Alk 16 NH 2 , NR 17 R 18 , NR 19 COR 19a , Alk 17 COOR 19b , SO 2 R 19c , SO 3 H, PO 3 H 2 or halogen; wherein; Alk 15 through Alk 17 are independently C 1-8 straight or branched alkylene or alkenylene; R 13b is H, or C 1-8 straight or branched alkyl; R 17 , through R 19 and R 19a through R 19c are independently H, an aromatic group, or C 1-8 straight or branched alkyl; R 4 is wherein; r is an integer from 1 to 20; R 20 is SO 3 H, PO 3 H 2 , halogen, OR 13c , COOR 13d , NO 2 , NR 21 R 22 , NR 23 COR 23a , Alk 18 COOR 19d , SO 2 R 19e or Alk 18 NR 24 R 25 and when R 3 is other than (CH 2 ) q (C 6 H 4 )Q, R 20 is as defined above or is H, OH, NH 2 Alk 19 OH, Alk 20 NH 2 , or Alk 21 COOH; wherein; Alk 19 through Alk 21 are independently C 1-8 straight or branched alkylene or alkenylene; R 13c and R 13d are independently C 1-8 straight or branched alkyl; R 19d and R 19e are independently H, an aromatic group or C 1-8 straight or branched alkyl; R 21 , through R 25 and R 23a are independently H, an aromatic group or C 1-8 straight or branched alkyl; and salts thereof.