New phenylpropanoid esters of sucrose from Polygonum lapathifolium.

@article{Takasaki2001NewPE,
  title={New phenylpropanoid esters of sucrose from Polygonum lapathifolium.},
  author={M. Takasaki and S. Kuroki and M. Kozuka and T. Konoshima},
  journal={Journal of natural products},
  year={2001},
  volume={64 10},
  pages={
          1305-8
        }
}
Four new phenylpropanoid esters of sucrose, lapathosides A (1), B (2), C (3), and D (4), were isolated from the aerial parts of Polygonum lapathifolium together with known esters, vanicoside B (5) and hydropiperoside (6). The structures of 1-4 were determined by spectral (1D and 2D NMR and MS) analysis. Lapathoside A (1) and vanicoside B (2) showed significant inhibitory effects on the Epstein-Barr virus early antigen activation by tumor-promoters. 
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