Synthesis and biological assessment of simplified analogues of the potent microtubule stabilizer (+)-Discodermolide
作者:José M. Mı́nguez、Sun-Young Kim、Kenneth A. Giuliano、Raghavan Balachandran、Charitha Madiraju、Billy W. Day、Dennis P. Curran
DOI:10.1016/s0968-0896(03)00186-x
日期:2003.7
convergent and stereocontrolled synthesis of simplified analogues of the potent antimitotic agent (+)-discodermolide has been achieved and several small libraries have been prepared. In all the libraries, the discodermolide methyl groups at C14 and C16 and the C7 hydroxy group were removed and the lactone was replaced by simple esters. Other modifications introduced in each series of analogues were related
有效,收敛和立体控制的有效抗有丝分裂剂(+)-discodermolide的简化类似物的合成已实现,并已准备了几个小库。在所有文库中,除去了C14和C16上的二脱甲基亚甲基和C7羟基,并用简单的酯代替了内酯。每个系列类似物中引入的其他修饰与天然产物的C11,C17和C19有关。合成策略的关键要素包括(a)从一个常见的中间体中精制主要亚基,以及(b)使用Wittig反应安装(Z)-烯烃的片段偶联。分析了文库组件的体外微管稳定作用,[3H]紫杉醇从其在微管蛋白上的结合位点的置换,通过基于多参数荧光细胞的筛选技术,它具有针对人类癌细胞的抗增殖活性,以及用于细胞信号传导和有丝分裂纺锤体改变。结果表明,即使明显的结构简化也可以导致类似物具有与微管靶向相关的作用。