From the n-butanol extract of the crude drug "Bai-Hua Qian-Hu", the root of PEUCEDANUM PRAERUPTORUM Dunn. (Umbelliferae) praeroside I ( 1) and three known linear-type furanocoumarin glycosides, isorutarin ( 2), rutarin ( 3), and marmesinin ( 4), along with two known simple coumarin glycosides,