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The proposed structure for puerarinoid D [1] need be revised as (+)-puerol B 2"-O-glucoside, on the basis of the earlier reported data [2] and BioBioPha's re-analysis.

References:

[1] Y. Z. Wang, et al. A new chemical component of Pueraria lobata. Acta Pharm. Sin., 2007, 42(9): 964-967.

[2] T. Nohara, et al. But-2-enolides from Pueraria lobata and revised structures of puerosides A, B and sophoraside A. Phytochemistry, 1993, 33(5): 1207-1210.

[3] Y. Shirataki, et al. Sophoraside A, a new aromatic glycoside from the roots of Sophora japonica. Chem. Pharm. Bull., 1987, 35(4): 1637-1640.