Cyclopent[<i>a</i>]anthraquinones as DNA-Intercalating Agents with Covalent Bond Formation Potential: Synthesis and Biological Activity
作者:Joong Young Kim、Tsann-Long Su、Ting-Chao Chou、Bernd Koehler、Alex Scarborough、Ouathek Ouerfelli、Kyoichi A. Watanabe
DOI:10.1021/jm950881y
日期:1996.1.1
A series of mitomycin C (MMC) analogues, namely cyclopentanthraquinone derivatives, were synthesized via Diels-Alder cyclization of naphthoquinone with 1-vinylcyclopent-1-enes. These new compounds are planar structures, like MMC, and bear an aziridine ring and a methyl carbamate side chain. After bioreduction, they are anticipated to be capable of intercalating into double-stranded DNA and bind covalently. Structure-activity relationships were studied. Of these compounds, 2,3-aziridino-4-[[(methylamino)carbonyl]methyl]cyclopent[a]anthracene-6,11-dione (4) was shown to have inhibitory activity against several leukemic and solid tumor cell lines. Mice (BDF1) bearing Lewis lung adenocarcinoma were treated with 4 and MMC (ip, QD x 5). At a dose of 30.0 mg/kg, compound 4 was as effective as MMC (0.8 mg/kg). Compound 4 appears to be less toxic than MMC. DNA unwinding assay indicated that 4 is able to intercalate into DNA double strands and is also a topoisomerase II inhibitor.