A newalkaloid, chaerophylline (1), together with known alkaloids (−)-corypalmine, berberine chloride, (−)-isocorypalmine, (−)-corydalmine and (+)-bicuculline have been isolated from the crude base fraction of Corydalis chaerophylla. The crude base fractions of Corydalis longipes gave a newalkaloid, longicine (4), together with known alkaloids (±)-α-hydrastine, (±)-β-hydrastine, N-methylhydrasteine