Pouzití komplexu medi v oxidacním stupni +II a jejich krystalosolvátu obecného vzorce [Cu(qui)(R.sub.n.n.phen)]X, vyjádrených strukturním vzorcem (I), kde symbol qui predstavuje 2-fenyl-3-hydroxychinolin-4(1H)-onátový aniont, symbol R.sub.n.n., kde n = 1-4, predstavuje substituent nebo substituenty na 1,10-fenanthrolinu (phen), kde R1 je substituent vybraný ze skupiny: vodík, 4-methyl, 5-methyl, 5-nitro, 5-chloro, a/nebo je-li R1 5-methyl, pak je R2 6-methyl, je-li R1 4-fenyl, pak je R2 7-fenyl, je-li R1 3-methyl, pak je R2 4-methyl, R3 je 7-methyl a R4 je 8-methyl, vyjádrené konkrétními vzorci [Cu(qui)(4-methylphen)]X, [Cu(qui)(5-methylphen)]X, [Cu(qui)(5-nitrophen)]X, [Cu(qui)(5-chlorophen)]X, [Cu(qui)(5,6-dimethylphen)]X, [Cu(qui)(4,7-difenylphen)]X, [Cu(qui)(3,4,7,8-tetramethylphen)]X, a kde symbol X je monoaniont kyseliny vybrané ze skupiny: F.sup.-.n., Cl.sup.-.n., Br.sup.-.n., I.sup.-.n., NO.sub.3.n..sup.-.n., BF.sub.4.n..sup.-.n., BPh.sub.4.n..sup.-.n., HCOO.sup.-.n., CH.sub.3.n.COO.sup.-.n., ClO.sub.4.n..sup.-.n., HSO.sub.4.n..sup.-.n., pro prípravu léciv pro lécbu karcinomu plic a/nebo pro lécbu maligního melanomu a/nebo pro lécbu karcinomu delozního cípku a/nebo karcinomu vajecníku a/nebo cisplatin-rezistentní lidské nádorové linie karcinomu vajecníku a/nebo pro lécbu karcinomu prostaty.In the present invention, there is disclosed the use of copper complexes in oxidation stage +II and crystalline solvates thereof of the general formula [Cu(qui)(Rinphen)]X as expressed by a structural formula (I), in which the symbol qui represents 2-phenyl-3-hydroxyquinolin-4(1H)-onate anion, the symbol Rin, wherein n = 1to 4, represents a substituent or substituents on 1,10-phenanthroline(phen), in which R1 denotes a substituent being selected from the group consisting of: hydrogen, 4-methyl, 5-methyl, 5-nitro, 5-chloro, and/or if R1 is 5-methyl, then R2 is 6-methyl, if R1 is 4-phenyl, then R2 is 7-phenyl, if R1 is 3-methyl, then R2 is 4-methyl, R3 is 7-methyl and R4 is