The component composition of the chloroform fraction of the ethanol extract of the Dictamnus angustifolius plant of the Rutaceae family, collected in the Tashkent Region of the Republic of Uzbekistan, is investigated. Alkaloids skimmianine, gamma-fagarine, haplamine, and the new base angucine were isolated using column chroma tography as separation method. The obtained compounds were identified by means of H-1, C-13 NMR, Fourier trans form IR spectroscopy, and X-ray diffraction analysis.