Design, synthesis, and biological evaluation of benzo[b]thiophene 1,1-dioxide derivatives as potent STAT3 inhibitors was written by Li, Wen-Zhen;Xi, Hui-Zhi;Wang, Yi-Jie;Ma, Hong-Bo;Cheng, Zhi-Qiang;Yang, Yu;Wu, Meng-Ling;Liu, Ting-Mei;Yang, Wen;Wang, Qin;Liao, Meng-Ya;Xia, Yong;Zhang, Yi-Wen. And the article was included in Chemical Biology & Drug Design in 2021.Formula: C10H7BrO2S This article mentions the following:
As a member of the signal transducer and activator of transcription (STAT) family, STAT3 plays a critical role in several biol. pathways such as cell proliferation, migration, survival, and differentiation. Due to abnormal continuous activation in tumors, inhibition of STAT3 has emerged as an attractive approach for the treatment of various cancer cells. Herein, we report a series of novel STAT3 inhibitors based on benzo[b]thiophene 1,1-dioxide scaffold and evaluated their anticancer potency. Among them, compound I exhibited the best activity against cancer cells. Compound I induced apoptosis and blocked the cell cycle. Meanwhile, I reduced intracellular ROS content and caused the loss of mitochondrial membrane potential. Further research revealed that I significantly blocked STAT3 phosphorylation and STAT3-dependent dual-luciferase reporter gene experiments showed that compound I has a marked inhibition of STAT3-mediated Firefly luciferase activity. Mol. modeling studies revealed compound I occupied the pocket well with the SH2 domain in a favorable conformation. In the experiment, the researchers used many compounds, for example, Methyl 5-bromobenzo[b]thiophene-2-carboxylate (cas: 7312-11-0Formula: C10H7BrO2S).
Methyl 5-bromobenzo[b]thiophene-2-carboxylate (cas: 7312-11-0) belongs to benzothiophene derivatives. Benzothiophene is relatively a stable molecule. The core structure is a part of various pharmaceutical substances and natural products. The different substitution patterns in these heterocycles offer new opportunities for drug discovery and other applications in materials science.Formula: C10H7BrO2S
Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem