
%0 Journal Article
%A Carroll, AR 
%A Taylor, WC 
%T Constituents of <I>Eupomatia</I> Species. XI. New Eupodienone Lignans From the Flowers of <I>Eupomatia laurina</I>
%J Australian Journal of Chemistry
%D 1990/11/01
%V 43
%N 11
%P 1871-1879
%K 
%R https://doi.org/10.1071/CH9901871
%U https://www.publish.csiro.au/paper/CH9901871 
%X On the basis of spectroscopic evidence, eupodienone-8 and -9, isolated from the flowers of Eupomatia laurina R. Br., are assigned the structures (5R, 7R, 8R)-3&#8242;,4-dimethoxy-7,8-dimethyl-2,3-methylenedioxy-6,7,8,9-tetrahydrospiro[5H-benzocycloheptene-5,1&#8242;-cyclohexa-2&#8242;,5&#8242;-dien]-4&#8242;-one (9) and (5S,7R,8R)-3&#8242;,4-dimethoxy-7,8- dimethyl-2,3-methylenedioxy-6,7,8,9-tetrahydrospiro[5H-benzocycloheptene-5,1&#8242;-cyclohex-2&#8242;,5&#8242;-dien]-4&#8242;-one (10) respectively. The products of dienone-phenol rearrangement of these substances are characterized; eupodienone-8 unexpectedly rearranges with aryl group migration. Eupomatenoid-1 and -7, eupodienone-6 and (-)- dihydroguaiaretic acid were also isolated. 
