The cytochrome bc1 complex (EC 1.10.2.2, bc1) is one of the most promising targets for new drugs and agricultural fungicides. Among the existing bc1 complex inhibitors specifically binding to the Qo site, oxazolidinedione derivatives have attracted great attention. With the aim to understand the substituent effects of oxazolidinedione derivatives on the inhibition activity against the bc1 complex, a series of new oxazolidinedione derivatives were designed, synthesized, and biologically evaluated. The further inhibitory kinetics studies against ...