A. Isoflavone ring system showing the ring nomenclature and numbering |
|
 |
|
R1 |
R2 |
R3 |
Genistein |
-H |
-OH |
-OH |
Daidzein |
-H |
-H |
-OH |
Glycitein |
-OCH3 |
-H |
-OH |
Formononetin |
-H |
-H |
-OCH3 |
Biochanin A |
-H |
-OH |
-OCH3 |
B. Structures of Isoflavones discussed in this article |
Table 1: Position of Ring A in the isoflavone ring. |