Chemical constituents of Corydalis decumbens

Objective To study the alkaloids chemical composition from stem of Corydalis decumbens. Methods The compounds from the ethyl acetate part were separated and purified through various kinds of chromatographic methods and their structures were identified by physico-chemical properties of spectroscopic methods. Results Eleven alkaloids compounds were isolated and identified. They were protopine(1), muramine(2), β-allocryptopine(3), cryptopine(4),(6S, 6a S, M)-isocorydine(5), bulbocapine(6),(+)-egenine(7),(-)-corypalmine(8), bicuculline(9),(-)-7′-O-methylegenine(10), and epi-coryximine(11). Conclusion Compounds 5 and 10 are isolated from this genus for the first time. Compound 3, 8, and 10 are isolated from this plant for the first time