
%0 Journal Article
%A Burden, JK 
%A Cambie, RC 
%A Craw, PA 
%A Rutledge, PS 
%A Woodgate, PD 
%T Oxidative Coupling of Lignans. IV. Monophenolic Oxidative Coupling
%J Australian Journal of Chemistry
%D 1988/06/01
%V 41
%N 6
%P 919-933
%K 
%R https://doi.org/10.1071/CH9880919
%U https://www.publish.csiro.au/paper/CH9880919 
%X Oxidative coupling of the monophenolic monoester (6) gives an aryltetralin (12) which is a potential intermediate for the synthesis of clinically active monophenolic  lignan lactones. In contrast, oxidative couplings of the monophenols (32) and (35), derived from matairesinol (29), give mixtures of diastereoisomeric  cyclooctadiene  lignans while 4&#8242;-demethyldeoxypodorhizon (26) does not cyclize . These results show that the degree of aromatic substitution in monophenolic diarylbutanes plays an important role in determining the outcome of oxidative coupling. An alternative synthesis of the lactone (57) from piperonal has been investigated. 
