Isoflavones Reduce Copper with Minimal Impact on Iron In Vitro

Figure 6

Scheme showing the dependence of structural modification of ring A of isoflavones on copper reduction at all tested pH. Arrows show the direction of the more potent compound in the sense of copper reduction. Two-way arrows mean no difference. The exceptions are shown in parenthesis. (A) Daidzein, (B) puerarin, (C) glycitein, and (D) glycitin.