Saponin compound as well as preparation method and application thereof

The invention discloses a saponin compound as well as a preparation method and application thereof. The saponin compound is hirsutuside A. The extraction method of the compound comprises the followingsteps: putting rubus hirsutus in an organic solvent for leaching to obtain a leaching solution, concentrating the leaching solution, adding water to prepare a water suspension; extracting the water suspension, concentrating the extract to obtain an extract; and separating and purifying the extract to obtain the saponin compound. The saponin compound with a novel structure is separated and identified from rubus hirsutus, has wide pharmacological activity, and can be used for preparing antitumor drugs, tumor prevention health-care foods, anti-tyrosinase drugs or whitening cosmetics. 本发明公开了一种皂苷化合物及其制备方法与应用；所述皂苷化合物为hirsutuside A。该化合物的提取方法为：将蓬蘽置于有机溶剂中浸提，得到浸提液，将浸提液浓缩后加水制备水混悬液；对水混悬液进行萃取，将萃取液浓缩，获得浸膏；从浸膏中分离纯化得到所述皂苷化合物；本发明从蓬蘽中分离鉴定了一种具有新颖结构的皂苷化合物，具有广泛的药理活性，能用于制备抗肿瘤药物或肿瘤预防保健食品、抗酪氨酸酶药物或美白化妆品。