Design,synthesis and biological evaluation of isoxazole-naphthalene derivatives as anti-tubulin agents |
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| Institution: | 1. State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, China;2. College of Chemistry and Chemical Engineering, Jishou University, Jishou, China;3. Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University, Guiyang, China;4. College of Food Science and Technology, Shanghai Ocean University, Shanghai, China;5. School of Pharmacy, Guizhou Medical University, Guiyang, China |
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| Abstract: | In this study, a novel series of isoxazole-naphthalene derivatives as tubulin polymerization inhibitors were designed, synthesized and evaluated for their anti-proliferative activities against human breast cancer cell line MCF-7. Most of the synthesized compounds exhibited moderate to potent antiproliferative activity (IC50 < 10.0 μM), as compared to cisplatin (15.24 ± 1.27 μM). Among them, compound 5j containing 4-ethoxy substitution at phenyl ring was found to be the most active compound with IC50 value of 1.23 ± 0.16 μM. Mechanistic studies revealed that compound 5j arrested cell cycle at G2/M phase and induces apoptosis. Furthermore, in vitro tubulin polymerization assay showed that compound 5j displayed better inhibition activity on tubulin polymerization (IC50 = 3.4 μM) than colchicine (IC50 = 7.5 μM). Molecular docking study also revealed that compound 5j binds to the colchicine binding site of tubulin. |
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| Keywords: | Isoxazole Naphthalene Anti-tubulin agents Tubulin polymerization Antitumor |
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