Synthesis and Biological Evaluation of Novel Benzimidazole Derivatives and Analogs Targeting the NLRP3 Inflammasome
Liangkun Pan,
Nan Hang,
Chao Zhang,
Yu Chen,
Shuchun Li,
Yang Sun,
Zhongjun Li,
Xiangbao Meng
Affiliations
Liangkun Pan
State Key Laboratory of Natural and Biomimetic Drugs, Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
Nan Hang
State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210093, China
Chao Zhang
State Key Laboratory of Natural and Biomimetic Drugs, Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
Yu Chen
State Key Laboratory of Natural and Biomimetic Drugs, Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
Shuchun Li
State Key Laboratory of Natural and Biomimetic Drugs, Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
Yang Sun
State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210093, China
Zhongjun Li
State Key Laboratory of Natural and Biomimetic Drugs, Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
Xiangbao Meng
State Key Laboratory of Natural and Biomimetic Drugs, Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
A series of benzo[d]imidazole analogues of thiabenzole were synthesized and their antiinflammatory activities toward NLRP3 (nucleotide‐binding domain leucine‐rich repeat containing protein family，pyrin domain‐containing 3，also known as cryopyrin or NALP3) inflammasome were evaluated in vitro. Two lead compounds, TBZ‐09 and TBZ‐21, were identified by antiproduction of IL‐1β. In the second round of biological evaluation, based on the lead, 34 more compounds were synthesized and their in vitro anti‐inflammatory activities were investigated. Several compounds were identified as anti‐inflammatory agents that can reduce IL‐1β expression in a dosedependent manner. A preliminary structure–activity relationship is also summarized here.
