发明授权
US6130227A 7-Substituted camptothecin derivatives and methods for inhibiting the growth of tumor cells therewith 失效
7-取代喜树碱衍生物及其抑制肿瘤细胞生长的方法

7-Substituted camptothecin derivatives and methods for inhibiting the
growth of tumor cells therewith
摘要:
20S-Camptothecin derivatives in which the 7-position bears as a substituent --CN, --CH(CN)R.sub.4, --CH.dbd.C(CN)R.sub.4, --C(.dbd.NOH)NH.sub.2, --C(.dbd.NH)NH.sub.2, --CH.dbd.C(NO.sub.2)R.sub.4, --CH(CN)R.sub.5, --CH(CH.sub.2 NO.sub.2)R.sub.5, tetrazol-5-yl, 4,5-dihydrooxazol-2-yl, or 1,2,4-oxadiazolin-3-yl-5-one. These compounds are active as topoisomerase I inhibitors, and can be used as antitumor drugs.
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