The aerial parts of Chrysanthemum coronarium L. were extracted with MeOH, and the concentrated extract was partitioned using EtOAc, n-BuOH, and H(2)O, successively. Repeated column chromatography of the EtOAc and n-BuOH fractions gave a new heterocycle, 5,5'-dibuthoxy-2,2'-bifuran (1) along with