Studies on the alkaloids from roots of Corydalis impatiens

Objective To study the alkaloids from Corydalis impatiens. Methods The alkaloids were isolated and purified by chromatography and their structures were identified by spectral data and others methods. Results Seven alkaloids were isolated and identified as bicuculline(1), ochotensine(2), ochotensimine(3), ochrobirine(4), tetrahydrothalifendine(5), norochotensimine(6), N-methylactinodaphnine(7). Conclusion All these compounds are isolated from this plant for the first time.