Four flavonoids, 1-4, are isolated from the chloroform extract of the areal part of Ononis angustissima Lam. Var., belonging to Fabaceae family, by various chromatographic techniques. Their structures are elucidated on the basis of spectroscopic analysis, including HRESI-MS, UV and 2D NMR experiments (COSY, NOESY, HSQC and HMBC) and compared with literature data. Compounds 1 and 2 are new in the genus, thus they are isolated for the first time in this species.
