Syntheses of the novel polymer-bound platinum-based chemotherapeutic agent poly(HPMA)-GGG-Ama=Pt=(1R,2R)-DACH, AP5346, and its precursors are reported. The method utilized in preclinical development of AP5346 is described herein. Additionally, an improved synthesis, which has shown that ion exchange resins can be removed, significantly less platinum can be used when the reaction mixture is pH-stated, and the synthesis can be performed at a higher concentration, is reported.
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