Dihydrofuro [2,3-b] quinolinium alkaloids in cultured cells of Ptelea trifoliata L. : Isolation of a new alkaloid, ptelecultinium.

Two dihydrofuroquinoline alkaloids, ptelefolonium and another new alkaloid, ptelecultinium, have been isolated from callus strains of Ptelea trifoliata L.. Ptelecultinium was not known to occur in the mature plants. The structure of these two alkaloids were established by UV, MS and (1)H-NMR spectra.