AUTHOR=Yin Meng , Fang Yongsheng , Sun Xiaotong , Xue Minggao , Zhang Caimei , Zhu Zhiyun , Meng Yamiao , Kong Lingmei , Myint Yi Yi , Li Yan , Zhao Jingfeng , Yang Xiaodong TITLE=Synthesis and anticancer activity of podophyllotoxin derivatives with nitrogen-containing heterocycles JOURNAL=Frontiers in Chemistry VOLUME=Volume 11 - 2023 YEAR=2023 URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2023.1191498 DOI=10.3389/fchem.2023.1191498 ISSN=2296-2646 ABSTRACT=Three series of podophyllotoxin derivatives with various nitrogen-containing heterocycles were designed and synthesized. The antitumor activity of these podophyllotoxin derivatives was evaluated in vitro against a panel of human tumor cell lines. The results showed that podophyllotoxin-imidazolium salts and podophyllotoxin-1,2,4-triazolium salts a1-a20 exhibited excellent cytotoxic activity. Among them, a6 was the most potent cytotoxic compound with IC50 values of 0.04-0.29 μM. Podophyllotoxin-1,2,3-triazole derivatives b1-b5 displayed medium cytotoxic activity, and podophyllotoxin-amine compounds c1-c3 has good cytotoxic activity with IC50 value of 0.04-0.58 μM. Furthermore, cell cycle and apoptosis experiments of compound a6 were carried out and the results exhibited that a6 could induce G2/M cell cycle arrest and apoptosis in HCT-116 cells.