A new view on the codonocarpine type alkaloids of Capparis decidua

The four spermidine alkaloids cadabicine (1), isocodonocarpine (3), codonocarpine (9), and capparidisinine (10) were identified as constituents of the root bark of Capparis decidua. Compounds 1 and 9 were found for the first time in this plant, and compound 10 is a new alkaloid that has not been described before.