Aqua[1,1-bis(4-hydroxyphenyl)-1,2-diamino-2-phenylethane]- sulfatoplatinum(II), a new compound for the treatment of the mammary carcinoma.
The highly estrogen receptor(ER)-affinic compound 1,1-bis(4-hydroxyphenyl)-2-phenylethane (BHPE) was used as carrier ligand for a new cisplatin derivative, aqua[1,1-bis(4-hydroxyphenyl)-1,2-diamino-2-phenylethane]sulfatoplati num (II) (3-PtSO4) for the therapy of the ER-positive (i.e. hormone sensitive) breast cancer. The diamine ligand 1,1-bis(4-hydroxyphenyl)-1,2-diamino-2-phenylethane (3) was synthesized by transformation of the O-methyl ether derivative of BHPE into the 1,2-bisazido compound 3b with IN3/NaN3, reduction of both N3 residues into NH2 groups [3a] and subsequent ether cleavage with BBr3. From the diamine ligand 3 and K2PtI4 a five-membered chelate 3-PtI2 was obtained which was transformed into 3-PtSO4 with Ag2SO4. In comparison to BHPE the ER-affinity of 3-PtSO4 is markedly reduced. 3-PtSO4 possesses, however, weak cytotoxic activity (P388) and antiestrogenic, but no estrogenic properties. 3-PtSO4 is comparable with BHPE in terms of its activity on the hormone sensitive MXT-M 3.2 breast cancer of the mouse.
Gust
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Institut für Pharmazie, Universität Regensburg, Germany.
D000818:Animals; D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000494:pharmacology; D004965:Estrogen Antagonists / Q000494:pharmacology; D005260:Female; D007941:Leukemia P388 / Q000188:drug therapy; D008325:Mammary Neoplasms, Experimental / Q000188:drug therapy*; D051379:Mice; D008815:Mice, Inbred Strains; D009944:Organoplatinum Compounds / Q000138:chemical synthesis* / Q000494:pharmacology; D011960:Receptors, Estrogen / Q000187:drug effects
D000970:Antineoplastic Agents; D004965:Estrogen Antagonists; D009944:Organoplatinum Compounds; D011960:Receptors, Estrogen; C086031:aqua(1,1-bis(4-hydroxyphenyl)-1,2-diamino-2-phenylethane)platinum(II) sulfate