Six dihydroflavonols, longeracemosonesA–F (1–6), together with two known flavonoids, mundulinol (7) and sericetin (8), have been isolated fromDunbarialongeracemosa. The structures of the isolated compounds were elucidated by spectroscopic analysis and the absolute configurations were determined by analysis of the CD spectra and by the modified Mosher's method. A novel conversion of the linear chromene