Figure 1.
Structures of ortho-hydroxydaidzein (OHD) and ortho-hydroxygenistein (OHG). Daidzein, R1 = R2 = R3 = R4 = H; 6-Hydroxydaidzein (6-OHD), R1 = R3 = R4 = H, R2 = OH; 8-Hydroxydaidzein (8-OHD), R1 = OH, R2 = R3 = R4 = H; 3′-Hydroxydaidzein (3′-OHD), R1 = R2 = R3 = H, R4 = OH; Genistein, R1 = R2 = R4 = H, R3 = OH; 6-Hydroxygenistein (6-OHG), R1 = R4 = H, R2 = R3 = OH; 8-Hydroxygenistein (8-OHG), R1 = R3 = OH, R2 = R4 = H; 3′-Hydroxydaidzein (3′-OHG), R1 = R2 = H, R3 = R4 = OH.