Objective To study the chemical constituents in the roots of Indigofera kirilowii.Methods Compounds were isolated and purified by liquid-liquid extraction,repetitive silica gel chromatography,and re-crystallization.Their structures were identified on the basis of various modern spectroscopic analyses.Results From the alcohol extract of the roots of I.kirilowii the following compounds have been isolated and identified:α-β anomers(3:1) of 3,4-di-O-[3-nitropropanoyl]-D-glucopyranoses(Ⅰ and Ⅱ),ononin(7-hydroxy-...