שליחת רשומה: Structures and Bioactivities of Quadrangularisosides A, A₁, B, B₁, B₂, C, C₁, D, D₁–D₄, and E from the Sea Cucumber <i>Colochirus quadrangularis</i>: The First Discovery of the Glycosides, Sulfated by C-4 of the Terminal 3-<i>O</i>-Methylglucose Residue. Synergetic Effect on Colony Formation of Tumor HT-29 Cells of these Glycosides with Radioactive Irradiation