[Study on Chemical Constituents from Roots of Lonicera macranthoides]

To study chemical constituents of the roots of Lonicera macranthoides.

The chemical constituents were isolated and purified by means of several chromatographic techniques and their structures were elucidated by spectroscopic methods.

Seven compounds were isolated and identified as ribenol (1), excoecarin C (2), 18-hydroxy-13-epi-manoyloxide (3), asiatic acid (4), oleanolic acid (5), β-sitosterol (6) and β-daucosterol (7).

Compounds 1-4 are obtained from this genus for the first time. Compound 5 is obtained from this plant for the first time. All the compounds are found from the roots of Lonicera mac- ranthoides for the first time.