reduced the studies of these derivatives to a few standard modifications. We report herein a novel semisynthetic route based on the Tscherniac–Einhorn reaction to synthesize new lipophilic camptothecin derivatives with amidomethyl and imidomethyl substitutions in position 9. Compounds were evaluated for their antiproliferative activity, topoisomerase I inhibition, and oral availability. Preliminary data
尽管 9 取代的喜树碱在癌症治疗中是有希望的候选者,但该位置的有限可及性已将这些衍生物的研究减少到一些标准修改。我们在此报告了一种基于 Tscherniac-Einhorn 反应的新型半合成路线,以合成在第 9 位具有酰胺甲基和酰亚胺甲基取代的新的亲脂性喜树碱衍生物。评估了化合物的抗增殖活性、拓扑异构酶 I 抑制和口服可用性。初步数据表明,相对于拓扑替康,大体积的亚氨基甲基修饰是有效口服给药的合适亲脂性替代物。此外,该通用程序为获得新的喜树碱衍生物铺平了道路。