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High-performance liquid chromatography chromatogram of standardised ethanolic extract stems (upper panel) and of DcM fraction stems (lower panel) of Kielmeyera coriacea; xanthones (1) kielcorin; (2) swertinin; (3) 1,3,7-trihydroxy-2-(3- methylbut-2-enyl)-xanthone; (4) 1,3,5-trihydroxy-2-(3-methylbut-2- enyl)-xanthone and mixture of complex triterpenes (5) and (6). Conditions: Metasil ODS column (5 m, 150 x 4.6 mm); step gradient of acetonitrile-water (containing 0.05% TFA): 10% 100% CH3CN over 40 min; flow rate 1 ml/min; detection UV 254 nm.

High-performance liquid chromatography
chromatogram of standardised ethanolic extract stems (upper panel) and of DcM fraction stems (lower panel) of Kielmeyera coriacea; xanthones (1) kielcorin; (2) swertinin; (3) 1,3,7-trihydroxy-2-(3- methylbut-2-enyl)-xanthone; (4) 1,3,5-trihydroxy-2-(3-methylbut-2- enyl)-xanthone and mixture of complex triterpenes (5) and (6). Conditions: Metasil ODS column (5 m, 150 x 4.6 mm); step gradient of acetonitrile-water (containing 0.05% TFA): 10%  100% CH3CN over 40 min; flow rate 1 ml/min; detection UV 254 nm.