[Studies on chemical constituents of Gaultheria leucocarpa var. Yunnanensis (Franch.) T. Z. Hsu & R. C. Fang]

OBJECTIVE

To separate and identify the chemical constituents of the aerial part of Gaultheria leucocarpa var. yunnanensis.

METHOD

The compounds were extracted with solvents, isolated by column chromatography and identified by spectral analysis.

RESULT

Four compounds were identified as n-dotriacontane and its homologous compound(1), ursolic acid(2), vanillic acid(3), and quercitrin(4).

CONCLUSION

The compounds 1, 4 were obtained from the plant for the first time, and 2 and 3 were from above-ground part of the plant for the first time.

[Screening of anti-bacteria activity of extracts of Gaultheria leucocarpa var. yunnanensis]

OBJECTIVE

To further develop Gaultheria leucocarpa var. yunnanensis, anti-bacteria constituents in it were screened.

METHOD

The constituents were extracted by chromatographic process. The anti-bacteria test was made with regulatory method of analysis.

RESULT AND CONCLUSION

Anti-bacteria test with extracts of water, acetic ester and n-butanol showed that 3 extracts from 22 samples had anti-Staphylococcus aureus action, and the extracts from root and stem showed the same result. 2 extracts could kill Escherichia coli and Pseudomonas aeruginosa. The lower the concentrate, the less the anti-bacteria action was. These results suggested that not only essential oil but other ingredients from G. leucocarpa var.yunnanensis have anti-bacteria activity. Anti-fungi test of the same extracts didn't indicate remarkable action.