The known alkaloids reticuline, isoboldine, isocorydine, glaucine, armepavine, oxyacanthine, and heliamine and the new alkaloids intebrinine and intebrimine have been isolated from the total alkaloids of the leaves of Berberis integerrima, and structures have been proposed for the latter two on the basis of spectral characteristics and independent synthesis. © 1993 Plenum Publishing Corporation.