Platinum(IV) Complex with Adamantylamine as Nonleaving Amine Group:  Synthesis, Characterization, and in Vitro Antitumor Activity against a Panel of Cisplatin-Resistant Cancer Cell Lines

Procedure of the synthesis is described for new platinum(IV) drug LA-12 [(OC-6−43)-bis(acetato)(1-adamantylamine)amminedichloroplatinum(IV)]. The X-ray diffraction analysis shows that the structure is created by molecules with octahedral arrangement of ligands around a platinum atom and contains one H<INF>2</INF>O molecule that is not a part of the coordination sphere of platinum. This new drug is more reactive with glutathione than cisplatin and is lacking cross-resistance with cisplatin as proven on the panel of cancer cell lines.