Patent ID: 7696363

Claim:
A method for synthesizing a phytoestrogenic isoflavonoid compound of Formula (I) wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , and R 8 are independently hydrogen, C 1 and C 18 straight chain alkyl, C 1 to C 18 branched alkyl, phenyl or substituted aryl, halogen, hydroxyl, alkoxyl, acetoxy, or acetamido, the method comprising reducing under hydrogen-transfer conditions an isoflavone diester of Formula (II) wherein R 9 and R 10 are independently hydrogen, C 1 to C 18 straight chain alkyl, C 1 to C 18 branched alkyl, phenyl, or substituted aryl, halogen, hydroxyl, alkoxyl, acetoxy, or acetamido; and R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , and R 8 are independently hydrogen, substituted or unsubstituted C 1 to C 18 straight-chain alkyl, substituted or unsubstituted C 1 to C 18 branched alkyl, cycloalkyl, phenyl, substituted aryl, halogen, hydroxyl, alkoxyl, acetoxy, or acetamido.