Patent ID: 7304165

Claim:
A compound comprising formula: X—{A} n —Y wherein n is an integer greater than 1; and each A, independent of every other A, is selected from the group consisting of: wherein R 1 and R 2 are independently selected from the group consisting of hydrogen, hydroxy, linear or branched C 1 -C 16 -alkyl, alkenyl, or alkynyl; mono-or di-C 1 -C 16 alkylamino; mono- or bicyclic aryl; mono- or bicyclic heteroaryl having up to 5 heteroatoms selected from N, O, and S; mono- or bicyclic aryl-C 1 -C 16 -alkyl; mono- or bicyclic heteroaryl-C 1 -C 16 -alkyl; —(CH 2 ) 0-6 —OR 3 , —(CH 2 ) 0-6 —SR 3 , —(CH 2 ) 0-6 —S(═O)—CH 2 —R 3 , —(CH 2 ) 0-6 —S(═O) 2 —CH 2 —R 3 , —(CH 2 ) 0-6 —NR 3 R 3 , —(CH 2 ) 0-6 —NHC(═O)R 3 , —(CH 2 ) 0-6 —NHS(═O) 2 —CH 2 —R 3 , —(CH 2 ) 0-6 —O—(CH 2 ) 2-6 —R 4 , —(CH 2 ) 0-6 —S—(CH 2 ) 2-6 —R 4 , —(CH 2 ) 0-6 —S(═O)—(CH 2 ) 2-6 —R 4 , —(CH 2 ) 0-6 —S(═O) 2 —(CH 2 ) 2-6 —R 4 , —(CH 2 ) 0-6 —NH—(CH 2 ) 2-6 —R 4 , —(CH 2 ) 0-6 —N—{(CH 2 ) 2-6 —R 4 } 2 , —(CH 2 ) 0-6 —NHC(═O)—(CH 2 ) 2-6 —R 4 , and —(CH 2 ) 0-6 —NHS(═O) 2 —(CH 2 ) 2-6 —R 4 ; wherein R 3 is independently selected from the group consisting of hydrogen, C 1 -C 6 -alkyl, alkenyl, or alkynyl; mono- or bicyclic aryl, mono- or bicyclic heteroaryl having up to 5 heteroatoms selected from N, O, and S; mono- or bicyclic aryl-C 1 -C 6 -alkyl, mono- or bicyclic heteroaryl-C 1 -C 6 -alkyl; and R 4 is selected from the group consisting of hydroxy, C 1 -C 6 -alkyloxy, aryloxy, heteroaryloxy, thio, C 1 -C 6 -alkylthio, C 1 -C 6 -alkylsulfinyl, C 1 -C 6 -alkylsulfonyl, arylthio, arylsulfinyl, arylsulfonyl, heteroarylthio, heteroarylsulfinyl, heteroarylsulfonyl, amino, mono- or di-C 1 -C 6 -alkylamino, mono- or diarylamino, mono- or diheteroarylamino, N-alkyl-N-arylamino, N-alkyl-N-heteroarylamino, N-aryl-N-heteroarylamino, aryl-C 1 -C 6 -alkylamino, carboxylic acid, carboxamide, mono- or di-C 1 -C 6 -alkylcarboxamide, mono- or diarylcarboxamide, mono- or diheteroarylcarboxamide, N-alkyl-N-arylcarboxamide, N-alkyl-N-heteroarylcarboxamide, N-aryl-N-heteroarylcarboxamide, sulfonic acid, sulfonamide, mono- or di-C 1 -C 6 -alkylsulfonamide, mono- or diarylsulfonamide, mono- or diheteroarylsulfonamide, N-alkyl-N-arylsulfonamide, N-alkyl-N-heteroarylsulfonamide, N-aryl-N-heteroarylsulfonamide, urea; mono- di- or tri-substituted urea, wherein the substituent(s) is selected from the group consisting of C 1 -C 6 -alkyl, aryl, heteroaryl; O-alkylurethane, O-arylurethane, and O-heteroarylurethane; one of X or Y is hydrogen or an amino-terminal protecting group; the other of X or Y is hydroxy or a carboxy-terminal protecting group; and salts thereof.