[Studies on diterpenes in needles of Pinus sylvestris].

OBJECTIVE

To research the constituents in needles of Pinus sylvestris.

METHODS

Repeated column chromatography and preparation HPLC are used for compound isolation, and their structures were elucidated on the basis of spectral data analysis.

RESULTS

Six compounds, pinifolic acid (1), 15-oxo-8 (17) -labden-18-oic acid (2) , 15-acetoxy-labd-8 ( 17)-en-18-oic acid (3), dehydroabietic acid (4), 7alpha-hydroxydehydroabietic acid (5), 7beta-hydroxydehydroabietic acid (6) were isolated from the needles of P. sylvestris.

CONCLUSIONS

Compound 3-6 were isolated from the needles of P. sylvestris for the first time, and compound 3 is a new natural product. The petroleum ether and EtOAc extracts showed significant cytotoxic effects to Hela and A549. Compounds 2, 4-6 revealed a positive distinction compared to the control group.