Fig. 1.
Structure of the flavonoids tested with respect to their effects on the 3a-mediated current. The flavonol kaempferol (1) and the kaempferol glycosides afzelin (2), juglanine (3), and tiliroside (4), as well as two tiliroside derivatives (5–6), the kaempferol triglycoside (7), the flavonol quercetin (8), the flavanone naringenin (9), and the isoflavone genistein (10). Rha stands for rhamnose and Araf for arabinofuranose. For their respective effects, compare Table 1.