GLUCOSIDES FROM PLEUROSPERMUM RIVULORUM

AIM To study the chemical constituents of Pleurospermum rivulorum. METHODS To separate the constituents of P.rivulorum by using various kinds of chromatography and identify their structures on the basis of spectral analysis. RESULTS Four glucosides were isolated from P.rivulorum. Their structures were established as marmesinin (I), tert-O-β-D-glucopyranosyl-heraclenol (II), 1′-O-β-D-glucopyranosyl (2R,3S)-3-hydroxynodakenetin (III) and 8-hydroxy-5-O-β-D-glucopyranosyl-psoralen (IV) based on the analysis of spectral data of IR, UV, MS, 1D and 2D-NMR. CONCLUSION Compounds III and IV are new compounds. All of the four compounds were isolated from this plant for the first time.