A series of 4β-triazole-linked glucose podophyllotoxin conjugates have been designed and synthesized by employing a click chemistry approach. All the compounds were evaluated for their anticancer activity against a panel of five human cancer cell lines (HL-60, SMMC-7721, A-549, MCF-7, SW480) using MTT assays. Most of these triazole derivatives have good anticancer activity. Among them, compound 35 showed the highest potency against all five cancer cell lines tested, with IC50 values ranging from 0.59 to 2.90 μM, which is significantly more active than the drug etoposide currently in clinical use. Structure-activity relationship analysis reveals that the acyl substitution on the glucose residue, the length of oligoethylene glycol linker, and the 4'-demethylation of podophyllotoxin scaffold can significantly affect the potency of the anticancer activity. Most notably, derivatives with a perbutyrylated glucose residue show much higher activity than their counterparts with either a free glucose or a peracetylated glucose residue.
通过点击
化学方法,设计并合成了系列4β-
三氮唑连接的
葡萄糖鬼臼毒素缀合物。所有化合物均通过M
TT法对其在五种人癌
细胞系(HL-60,
SMMC-7721,A-549,MCF-7,SW480)中的抗癌活性进行了评估。这些
三氮唑衍
生物大多具有良好的抗癌活性。其中,化合物35对所有五种癌
细胞系的活性最高,IC50值在0.59至2.90 μM之间,其活性显著高于临床使用的药物
依托泊苷。结构-活性关系分析显示,
葡萄糖残基上的酰基取代、聚
乙烯 glycol 链的长度以及
鬼臼毒素骨架的4'-脱甲基化对抗癌活性的强度有显著影响。特别值得注意的是,具有完全丁酰化的
葡萄糖残基的衍
生物比具有游离
葡萄糖或完全乙酰化
葡萄糖残基的对照组活性高得多。