Components were visualized either by irradiation with ultraviolet light (254 nm or 366 nm) or by appropriate staining. Column Chromatography was carried out on silica gel (60 Å, 40-60 μm, Acros Organics). If no solvent is stated an aqueous solution was prepared with demineralized water. Mixtures of two or more solvents are specified as "solvent A"/"solvent B", 3/1, v/v; meaning that 100 mL of the respective mixture consists of 75 mL of "solvent A" and 25 mL of "solvent B".