Patent ID: 8664384

Claim:
A compound selected from the group consisting of H2, HA2, 2-21, HO2, HO4, and HO24, wherein the compound has the structure of Formula (1), and wherein R 1 , R 2 , and R 3 are as set forth in the table below: Formula (1) No. R 1 H2 NH 2 HA2 NHC(O)CH 3 2 NHCOCH 2 CH 2 COOH 3 NH 2 4 NHCOCH 2 CH 2 COOH 5 NHCOCH 2 CH 2 COONHC(NH)NH 2 6 NH 2 7 NHCOCH 2 CH 2 COONHC(NH)NH 2 8 NHC(O)CH 3 9 NHCOCH 2 CH 2 COOH 10 NH 2 11 NHCOCH 2 CH 2 COOH 12 NHCOCH 2 CH 2 COONHC(NH)NH 2 13 NH 2 14 NHCOCH 2 CH 2 COONHC(NH)NH 2 15 NHC(O)CH 3 16 NHCOCH 2 CH 2 COOH 17 NH 2 18 NHCOCH 2 CH 2 COOH 19 NHCOCH 2 CH 2 COONHC(NH)NH 2 20 NH 2 21 NHCOCH 2 CH 2 COONHC(NH)NH 2 HO2 NH 2 HO4 OH HO24 OH No. R 2 R 3 H2 NH 2 H HA2 NHC(O)CH 3 H 2 NH 2 H 3 NHCOCH 2 CH 2 COOH H 4 NHCOCH 2 CH 2 COOH H 5 NH 2 H 6 NHCOCH 2 CH 2 COONHC(NH)NH 2 H 7 NHCOCH 2 CH 2 COONHC(NH)NH 2 H 8 NHC(O)CH 3 CH 3 9 NH 2 CH 3 10 NHCOCH 2 CH 2 COOH CH 3 11 NHCOCH 2 CH 2 COOH CH 3 12 NH 2 CH 3 13 NHCOCH 2 CH 2 COONHC(NH)NH 2 CH 3 14 NHCOCH 2 CH 2 COONHC(NH)NH 2 CH 3 15 NHC(O)CH 3 CH 3 CH 2 16 NH 2 CH 3 CH 2 17 NHCOCH 2 CH 2 COOH CH 3 CH 2 18 NHCOCH 2 CH 2 COOH CH 3 CH 2 19 NH 2 CH 3 CH 2 20 NHCOCH 2 CH 2 COONHC(NH)NH 2 CH 3 CH 2 21 NHCOCH 2 CH 2 COONHC(NH)NH 2 CH 3 CH 2 HO2 OH H HO4 NH 2 H HO24 OH H.