OBJECTIVE

To investigate the chemical constituents from the branches and leaves of Cupressus duolouxiana native to China in order to obtain a more comprehensive understanding of its effective components.

METHODS

Compounds were isolated and purified by silica gel column chromatography. They were identified and structurally elucidated by spectral analysis.

RESULTS

Six compounds were isolated from the ethanolic extracts of Cupressus duolouxiana, which were identified as (7S,8S)-3-methoxy-3',7-epoxy-8,4'-oxy-neoligna-4,9,9'-triol (I), kaempferol (II), quercetin (III), juglanin (IV), quercetin-3'-methoxy-3-O-alpha-L-arabinofuranoside (V) and avicularin (VI).

CONCLUSION

All compounds are obtained from this plant for the first time.