[Chemical constituents from Ajuga nipponensis].

OBJECTIVE

To study the chemical constituents of Ajuga nipponensis.

METHODS

The chemical constituents were isolated by repeated silica gel column chromatography and their structures were elucidated by phyisochemical properties and spectral analysis.

RESULTS

Ten compounds were isolated and identified as:hexadecanoic acid(1), ajuforrestin A(2), beta-sitosterol(3), acacetin(4), apigenin(5), ajugamacrin B(6), ursolic acid(7), beta-ecdysone(8), 8-acetylharpagide(9) and daucosterol(10).

CONCLUSIONS

Compounds 1-7 and 10 are isolated from this plant for the first time.