Design, synthesis, biological evaluation and cocrystal structures with tubulin of chiral β -lactam bridged combretastatin A-4 analogues as potent antitumor agents
作者:Pengfei Zhou、Yuru Liang、Hao Zhang、Hao Jiang、Kechang Feng、Pan Xu、Jie Wang、Xiaoming Wang、Kuiling Ding、Cheng Luo、Mingming Liu、Yang Wang
DOI:10.1016/j.ejmech.2017.12.004
日期:2018.1
A diverse of chiral β-lactam bridged analogues of combretastatin A-4 (CA-4), 3-substituted 1,4-diaryl-2-azetidinones, were asymmetrically synthesized and biologically evaluated, leading to identify a number of potent anti-proliferative compounds represented by 14b and 14c with IC50 values of 0.001–0.021 μM, against four human cancer cell lines (A2780, Hela, SKOV-3 and MDA-MB-231). Structure-activity
对称合成了康布雷他汀A-4(CA-4),3-取代的1,4-二芳基-2-氮杂环丁烷酮的各种手性β-内酰胺桥连类似物,并对其进行了生物学评估,从而鉴定出许多有效的抗增殖剂以14b和14c代表的化合物对四种人类癌细胞系(A2780,Hela,SKOV-3和MDA-MB-231)的IC 50值为0.001–0.021μM。对所有14b和14c立体异构体的结构活性关系(SAR)研究表明,在3位和4位的手性中心的绝对构型对于活性至关重要,并且通常是反式“ A”和“ B”环之间的配置最佳。另外,与恶性细胞相比,14b和14c对正常人输卵管上皮细胞的细胞毒性较小,表明其在体外具有良好的选择性。进一步的生物化学评估和微管蛋白的共晶结构表明,这两种化合物都通过在秋水仙碱结合位点相互作用破坏了微管蛋白的聚合,在体内外抑制了血管生成,在有丝分裂期阻止了细胞周期进程并诱导了细胞凋亡。体内试验证实,这两种化合物均能以