Synthesis and antitumor activity of Pt(II) complexes containing 2,3-diaminopropanol isomers.

Abstract
Halogeno, sulfato and nitrato Pt(II) complexes of 2,3-diaminopropanol (pnOH) isomers were synthesized and their antitumor activities against leukemia L1210 [mouse cells] were tested. The conformations of the chelate rings were determined to be .lambda.- and .delta.-gauche forms for R- and S-pnOH, respectively, by 13C-NMR and circular dichroism spectral analyses. Among the pnOH isomers, Pt(II) complexes containing R-pnOH showed higher antitumor activity than those containing S- or racemic pnOH. There may be a relationship between the conformations of the chelate rings and antitumor activity in the case of 5-membered chelate rings.