摘要:
A process for the preparation of cis-platinum(II) complexes of 1,2-cyclohexanediamine isomers, represented by formula I, containing substantially no dihydroxoplatinum(IV) complex as an impurity. ##STR1## Deoxygenated water is used in all steps of the process, from charging of the starting materials; i.e., potassium tetrachloroplatinate and trans-(-)-1,2-cyclohexanediamine, to the acquisition of target complexes. In addition, a low-oxygen content atmosphere is applied as an operational environment to prevent deoxygenated water from degradation through oxygen absorption and to eliminate the possibility of direct oxidation of a platinum compound due to atmospheric oxygen.
摘要:
Disclosed herein is cis-oxalato (trans-1-1,2-cyclohexanediamine) Pt(II) optically high purity. Because of its complete optical purity, the compound is effective as raw material of such a medicine as a carcinostatic agent. The complete optical purity of the above compound may be proved by comparing the respective melting points of the cis-oxalato (trans-1-1,2-cyclohexanediamine).