From the roots of Haplophyllum dauricum (L) G. Don., collected on the territory of the Uvur-Khangai aimak, Mongolian People's Republic, in the fruit-bearing stage have been isolated robustine, dictamnine, γ-fagarine, haplopine, skimmianine, 4-methoxy-N-methyl-2-quinolone, folimine, robustinine, and the new alkaloid daurine the structure of which has been established as 8-(γ,γ-dimethylallyloxy)-4-methoxy-N-methyl-2-quinolone. © 1984 Plenum Publishing Corporation.