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从密花滇紫草(Onosma confertum W.W.Smith)根的石油醚提取物中分离出四种化合物,根据其理化常数、光谱数据(MS、IR、~4H-NMR、CD)及 HPLC 等鉴定为:去氧紫草素(Ⅰ)、β,β-二甲基丙烯酰紫草素(Ⅱ)、乙酰紫草素(Ⅲ)和紫草素(Ⅳ)。并对紫草素衍生物碱水解所得紫草素总含量进行了测定。
Four compounds were isolated from the petroleum ether extract of the root of Onosma confertum WWSmith, and identified according to their physicochemical constants, spectral data (MS, IR, ~4H-NMR, CD) and HPLC. Deoxyshivanin (I), β,β-Dimethylacryloylshikonin (II), Acetylshikonin (III) and Shikonin (IV). The total shikonin content obtained by alkaline hydrolysis of shikonin derivatives was determined.