Dendrobium phenanthrene composition and application thereof

The invention provides a dendrobium phenanthrene composition and application thereof. The dendrobium phenanthrene composition comprises 4, 7-dihydroxy-2, 3-dimethoxy-9, 10-dihydrophenanthrene, 4, 7-dihydroxy-2, 3, 6-trimethoxy-9, 10-dihydrophenanthrene and 4, 5-dihydroxy-2, 3-dimethoxy-9, 10-dihydrophenanthrene. The dendrobium phenanthrene composition is applied to preparation of a drug of an alpha-glucosidase inhibitor, can effectively inhibit the activity of alpha-glucosidase, has no toxic or side effect on a human body, has drug dependence superior to that of an existing chemical drug, and can be widely applied to preparation of a drug for preventing and treating diabetes. 本发明提供了一种石斛菲类组合物及其应用，石斛菲类组合物包括4,7-二羟基-2,3-二甲氧基-9,10-二氢菲、4,7-二羟基-2,3,6-三甲氧基-9,10-二氢菲和4,5-二羟基-2,3-二甲氧基-9,10-二氢菲。该石斛菲类组合物应用在制备α-葡萄糖苷酶抑制剂的药物中，能够有效地抑制α-葡萄糖苷酶活性；对人体无毒副作用和药物依赖型优于现有的化学药，可以广泛应用于防治糖尿病的药物制备中。