Chemical constituents of Lomatogonium carinthiacum and Halenia corniculata

To study the chemical constituents from traditional Chinese (Mongolian) medicine, Lomatogonium carinthiacum and Halenia corniculate.The chemical constituents were isolated and purified by silicagel column, Sephadex LH-20, ODS and high performance liquid chromategramphy. The structures were identified by NMR and MS analysis technics.Twelve compounds were isolated and identified as isovitexin (1), Luteolin-5-O-β-D-glucoside (2), Isosaponarin (3), Luteolin-7-O-β-D-glucoside (4,7), 1,4,8-Trimethoxy-xanthone-6-O-β-D-glucoronyl-(1 → 6)O-β-Dglucoside (5), friginosideD (6), 1-hydroxy-2,3,5-trimethoxyxanthone (8), 1-hydroxy-2,3,4,5-tetramethoxyxanthone (9), 1-hydroxy-2,3,4,7-tetramethoxyxanthone(10), 1-hydroxy-2,3,4,5,7-pentamethoxyxanthone (11) and usnic acid (12).Compounds 6 and 12 are obtained from L. carinthiacum and H. corniculate for the first time.