Structural Optimization and Structure-Activity Relationship of 4-Thiazolidinone Derivatives as Novel Inhibitors of Human Dihydroorotate Dehydrogenase.

Human dihydroorotate dehydrogenase (DHODH), one of the attractive targets for the development of immunosuppressive drugs, is also a potential target of anticancer drugs and anti-leukemic drugs. The development of promising DHODH inhibitors is in high demand. Based on the unique binding mode of our previous reported 4-thiazolidinone derivatives, via molecular docking method, three new series 4-thiazolidinone derivatives were designed and synthesized as DHODH inhibitors. The preliminary structure-activity relationship was investigated. Compound of biphenyl series and compound of amide series displayed IC values of 1.32 μM and 1.45 μM, respectively. This research will provide valuable reference for the research of new structures of DHODH inhibitors.