β-tubulin, zampanolide exhibits cytotoxic potency towards multi-drug resistant cancer cells that is superior to paclitaxel. However, the limited availability of zampanolide impedes its further in vivo evaluation as a viable drug candidate. Zampanolide is envisioned to become more drug-like if its chemically fragile side chain can be stabilized; hence, this project aims to develop mimics of zampanolide with
(-)-Zampanolide是一种海洋微管稳定化大环内酯,已通过体外实验显示为有前途的抗癌先导化合物。通过与β-微管蛋白的独特共价结合,扎曼醇化物对多药耐药性癌细胞显示出优于
紫杉醇的细胞毒性。但是,扎曼醇化物的有限可用性阻碍了其作为可行药物候选者的进一步体内评估。如果能稳定其
化学上脆弱的侧链,则可认为赞帕罗尼将变得更像药物。因此,该项目旨在使用简单的合成方法开发具有稳定侧链的赞帕诺胺模拟物。为此,对于每种模拟物,已经通过市售的2-butyn-1-ol作为起始原料,通过24步序列合成了十二种具有共轭和平面侧链的新颖的扎曼醇化物模拟物(51-62)。Horner-Wadsworth-Emmons反应结合了α,β-不饱和酮侧链,并关闭了核心大环。在三种对
多西他赛敏感的和两种对
多西他赛耐药的人类前列腺癌细胞模型中进行的WST-1细胞增殖测定证实,经过适当设计的侧链可以充当zampanolide中