Two series of heterocyclic colchicinoids bearing β-methylenedihydrofuran or 2H-pyran-2-one fragments were synthesized by the intramolecular Heck reaction. Methylenedihydrofuran compounds 9a and 9h were found to be the most cytotoxic among currently known colchicinoids, exhibiting outstanding antiproliferative activity on tumor cell lines in picomolar (0.01–2.1 nM) range of concentrations. Compound
通过分子内Heck反应合成了两个系列的带有β-亚甲基二氢
呋喃或
2H-吡喃-2-酮片段的杂环类
秋水仙碱。发现亚甲基二氢
呋喃化合物9a和9h在目前已知的类
秋水仙碱中具有最大的细胞毒性,在浓度为皮摩尔(0.01–2.1 nM)的肿瘤
细胞系中表现出杰出的抗增殖活性。化合物9a在体外有效和亚
化学计量地抑制微管形成,在该测定中比
秋水仙碱更具活性一个数量级。衍
生物9a和9h对小鼠的急性毒性较低(LD 50 ≥10 mg / kg iv)。与微管蛋白结合的类秋
水仙素9a的X射线结构证实了该化合物与微管蛋白的
秋水仙碱结合位点相互作用。