从云南地不容(Stephania yunnanensis H.S.Lo)的块根中分得10种生物碱,根据其理化性质,波谱分析及化学方法鉴定为:青风藤碱(sinoacutine,Ⅰ),1-四氢巴马汀(1-tetrahy-dropalmatine,Ⅱ),d-斯蒂酚灵(d-stepharine,Ⅲ),1-千金藤定碱(1-stepholidine, Ⅳ) 1-紫堇单酚碱(1-corydalmine,Ⅴ),千金藤碱(stephanine,Ⅵ),巴马汀碱(palmatine,Ⅶ),去氢紫堇单酚碱(dehydrocorydalmine, Ⅷ),千金藤宁碱(stepharanine,Ⅸ),及罗默碱(roe-merine,Ⅹ)。其主要生物碱为青风藤碱,得率0.84％,其次为1-四氢巴马汀,含量为0.51％。 Ten alkaloids were isolated from the roots of Stephania yunnanensis HSLo. According to their physicochemical properties, spectral analysis and chemical methods identified as: sinoacutine (I), 1-tetrahydropalmatine (1-tetrahy-dropalmatine, II), d-stepharine (III), 1-stepholidine (IV) 1- 1-pyrydalmine, V ), stephanine (VI), palmatine (VII), dehydrocorydalmine (VIII), stepharanine (IX), and roem base (roe) -merine,X). The main alkaloid was Caulis Sinomenine with a yield of 0.84%, followed by 1-tetrahydropalmatine, with a content of 0.51%.