1973 Volume 37 Issue 3 Pages 637-641
Dehydrodiferulic acid (II), a dimeric lactone obtainable from ferulic acid (I) by oxidative coupling, was converted into two types of lignans. Hydrogenolysis of II coupled with three subsequent operations gave dl-matairesinol dimethyl ether (IIIb). Acid-catalyzed cyclization of II followed by seven steps afforded dehydrodimethylconidendrin (X) and dehydrodimethylretrodendrin (XI).
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