CHEMICAL STUDIES OF CHINESE LICORICE-ROOTS - II - 5 NEW FLAVONOID CONSTITUENTS FROM THE ROOTS OF GLYCYRRHIZA-ASPERA PALL. COLLECTED IN XINJIANG

From the air-dried roots of Glycyrrhiza aspera PALL. (Leguminosae) col lected in Xinjiang province, China (known as a kind of ''Shinkyo-Kanzo ''), five new flavonoid compounds named glucoisoliquiritin apioside (1 ) (a chalcone bisdesmosidic triglycoside), 7-O-apioglucosyl-7,4'-dihyd roxyflavone (5) (a flavone diglycoside), dehydroglyasperin C (7) (a pr enylated isoflav-3-ene derivative), asperopterocarpin (9) and 1-methox yphaseollidin (12) tan O-prenylpterocarpan and a C-prenylpterocarpan, respectively), were isolated together with four known saponins, one kn own flavonoid O-glycoside, two known flavonoid C-glycosides, and seven flavonoids, The structures of the new compounds have been elucidated on the basis of their chemical and physicochemical properties, Some pt erocarpan compounds showed moderate cytotoxic activity against KB and L1210 cells.