
%0 Journal Article
%A Elix, JA 
%A Elix, JA 
%A Gaul, KL 
%A Gaul, KL 
%A Hockless, DCR 
%A Hockless, DCR 
%A Wardlaw, JH 
%A Wardlaw, JH 
%T Structure Determination of Butlerin A, B and C&#8212;Three New Lichen p-Terphenyls
%J Australian Journal of Chemistry
%D 1995/05/01
%V 48
%N 5
%P 1049-1053
%K 
%R https://doi.org/10.1071/CH9951049
%U https://www.publish.csiro.au/paper/CH9951049 
%X The structures of butlerin A (1) (3&#8242;,4,4&#8243;,6&#8242;-tetramethoxy[1,1&#8242;:4&#8242;,1&#8243;-terphenyl]-2&#8242;-yl acetate), butlerin B (2) (3&#8242;,4,4&#8243;,5&#8242;-tetramethoxy[1,1&#8242;:4&#8242;,1&#8243;-terphenyl]-2&#8242;-yl acetate) and butlerin C (5) (3&#8242;,4,4&#8243;-trimethoxy[1,1&#8242;:4&#8242;,1&#8243;-terphenyl]-2&#8242;,6&#8242;-diyl acetate), three para-terphenyls from the lichen Relicina connivens, have been established by X-ray analysis of crystals of butlerins A and B and spectroscopic comparisons. Crystals of a mixture of butlerins A and B are orthorhombic, Pbcn, a 22.388(3), b 13.525(2), c 7.082(3) &#506;; Z 4. Refinement of 1049 data with I > 3&#963;(I) gave conventional R factors of 0.043 and 0.042. 
