9-Aminomethyl derivatives of 7-ethyl-10-hydroxycamptothecin were synthesized. Interaction with a natural DNA octamer was checked using 1H NMR, PFGSE NMR and MALDI-TOF experiments, which proved covalent binding. Compounds were tested against human cancer cell lines in vitro. All compounds show high activity comparable to SN38. The obtained products are well soluble in water.
合成了7-乙基-10-羟基喜树碱的9-氨基甲基衍生物。使用1 H NMR,PFGSE NMR和MALDI-TOF实验检查与天然DNA八聚体的相互作用,这证明了共价结合。化合物在体外针对人癌细胞系进行了测试。所有化合物均具有与SN38相当的高活性。所得产物很好地溶于水。