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  • Title: Initiatives with platinum- and quinazoline-based antitumor molecules--Fourteenth Bruce F. Cain Memorial Award Lecture.
    Author: Harrap KR.
    Journal: Cancer Res; 1995 Jul 01; 55(13):2761-8. PubMed ID: 7796401.
    Abstract:
    Carboplatin is a better-tolerated alternative to cisplatin. JM216, the first p.o.-administrable platinum complex possesses toxicities comparable to carboplatin in Phase I studies. Together with the trans-platinum complex JM335, it provides new chemical guidelines for the development of compounds that may circumvent cisplatin resistance in tumors. Systematic structure-activity investigations have led to the discovery and development of ZD1694 (Tomudex), an inhibitor of thymidylate synthase that exploits both the reduced folate carrier and folylpolyglutamate synthetase as major determinants of its growth-inhibitory activity. Phase II studies have revealed encouraging activity against colon cancer, and Phase III studies are nearing completion. An associated structure-activity investigation has led to the development of ZD9331, a potent thymidylate synthase inhibitor which exploits the reduced folate carrier for cell entry, but which is independent of polyglutamation for its thymidylate synthase-inhibitory activity. This compound possesses antitumor activity in vivo and has been selected for full development.
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