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[Study on chemical constituents of petroleum ether portion from seed of Picria felterrae].

OBJECTIVE
To study the chemical constituents of petroleum ether portion from Seed of Picria felterrae.


METHODS
The chemical constituents were extracted and isolated with solvent and chromatography, and the chemical structures were determined on the basis of physicochemical properties and spectral data (UV, IR, 1H-NMR, 13C-NMR, MS).


RESULTS
Six chemical constituents were identified as follows: chrysophanol (I), 1-hydroxy-6-methyl-anthraquinone (II), beta-sitosterol (III), betulin (IV), N-benzoyl-phenylalanyl-L-phenylalaninol acetate (V) and picfeltarraenone I (VI).


CONCLUSION
Compounds I, II and IV are isolated from this plant for the first time.