Study on the chemical constituents from the stems and leaves of Salvia miltiorrhiza Bunge

Nineteen compounds were isolated from the ethyl acetate fraction of the stems and leaves of Salvia miltiorrhiza Bge by using various column chromatographic methods, such as silica gel, Sephadex LH-20 and semi-preparative HPLC. According to their physiochemical properties and spectral data, the structures were further identified as 3′,4′-dihydroxy-4-(3-methoxy-3-oxopropyl)-1,1′-biphenyl-3-carboxylic acid (1), 2-hydroxy-5-(2′-hydroxybenzyl) benzoic acid (2), dehydrozingerone (3), 3,4-dihydroxy benzalacetone (4), benzyl alcohol-β-D-glucopyranoside (5), dehydrololiolide (6), rel-5-(3S,8S-dihydroxy-1R,5S-dimethyl-7-oxa-6-oxobicyclo3,2,1-oct-8-yl)-3-methyl-2Z,4E-pentadienoic acid (7), 6-hydroxy-3-(2-hydroxyethyl)-2,4,4-trimethylcy clohexa-2,5-dien-1-one (8), scopoletin (9), esculetin (10), dihydrotanshinone Ⅰ (11), 2′-deoxythymidine (12), quercetin 3-glucoside (13), sutchuenmedin A (14), 2′′-O-rhamnosylicariside-Ⅱ (15), 2,2′-oxybis(1,4-di-tert-butylbenzene) (16), 1H-indole-3-carbaldehyde (17), 3-(2-oxopropyl)-3-hydroxyind-olin-2-one (18), dysodensiol E (19). Compound 1 was a new biphenyl lignan, named as 3′,4′-dihydroxy-4-(3-methoxy-3-oxopropyl)-1,1′-biphenyl-3-carboxylic acid. Compound 2 was a new natural product and compounds 3-8 and 4-19 were firstly isolated from S. miltiorrhiza. MTT method was used to screen the anti-hepatoma activity of all the compounds, and none of them showed obvious effect.