By means of chromatographic and crystallization techniques, two novel flavonoids were isolated from the roots of Sophora exigua Craib. The physical, chemical properties and spectroscopic data of those flavonoids have shown that they are 8-1avanduly 1-5, 7, 2’, 6’- tetrahydroxyflavanone 8-1avanduly 1-5, 7, 2’, 4’, 6’- pentahydroxyflavanone. Both have not previously been reported elsewhere neither naturally nor synthetically.
