A new quinoline alkaloid named sonminine (1) along with nine known quinoline alkaloids dictamnine (2), isodictamnine (3), skimmianine (4), robustine (5), γ-fagarine (6), isopteleine (7), 5-methoxydictamnine (8), haplopine (9), 5-hydroxy-4,8-dimethoxy-furoquinoline (10) and two sesquiterpenes dictamnol (11), radicol (12) were obtained. Among them, compound 8 and 10 were isolated from the genus Dictamnus L. for the first time. Compounds 9, 11 and 12 were obtained from this species for the first time. © 2013 Elsevier Ltd.