Patent ID: 7160908

Claim:
A platinum compound comprising a structure: wherein each of R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , and R 7 , independently, is hydrogen, —OH, —CH 2 —OH, —CH 2 —CH 2 —OH, —CH 2 —OH—CH 3 , —CH 2 —CH 2 —CH 2 —OH, —CH 2 —CH(CH 3 )OH, —O—CH 3 , —O—CH 2 —CH 3 , —O—CH 2 —CH 2 —CH 3 , —CH 2 —C 6 H 6 , —CH 2 ——C 6 H 5 —OH, —CH 2 —COOH, —CH 2 —CH 2 —COOH, or lower alkyl, or R 1 , R 2 , R 3 together with the attached N is pyridine; with a proviso that when each of R 1 , R 2 , R 4 , R 5 , and R 7 is hydrogen and R 3 is t-butyl, then R 6 is not hydrogen, methyl, —CH 2 —C 6 H 6 , —CH 2 —OH, i-butyl or i-propyl; and with a further proviso that when each of R 1 , R 2 , R 4 , R 5 , R 6 , and R 7 is hydrogen, then R 3 is not —CH 2 —COOH.