[Study on triterpenes from of Ligularia xanthotricha].

OBJECTIVE

To investigate the chemical constituents of Ligularia xanthotricha.

METHODS

Silica gel column chromatography and preparative TLC were employed for the isolation and purification. The structures were identified on the basis of spectral data (IR, EI-MS, 1H-NMR, 13C-NMR, DEPT) and chemical evidence.

RESULTS

Seven compounds were isolated and identified as follows: lupeol (1), lupeol palmitate (2), 3, 28-dihydroxyl-lupeol (3), betulinic acid (4), taraxasterol (5), taraxasteryl palmitat (6) and taraxasteryl acetate(7).

CONCLUSIONS

All the compounds were isolated from this plant for the first time.