[Chemical constituents of ethyl acetate fraction of Tetrastigma planicaule].

OBJECTIVE

To investigate the chemical constituents of ethyl acetate of Tetrastigma planicaule.

METHODS

The ethyl acetate fraction was isolated and purified by repeated silica gel chromatography and recrystallization. The structures of compounds were identified by physical-chemical methods and spectral data such as MS, 1H-NMR, 13C-NMR, etc.

RESULTS

Six compounds were identified as gheddic acid (I), tricosanol (II), beta-sitosterol (III), palmitic acid (IV), ethyl gallate (V) and vanillin (VI), respectively.

CONCLUSION

Compounds I, II, V and VI are isolated from this plant for the first time.