
%0 Journal Article
%A Cameron, DW 
%A Deutscher, DJ 
%A Feutrill, GI 
%A Griffiths, PG 
%T Chemistry of the Coccoidea. VIII. Synthesis of the ancient dyestuff kermesic acid and of related anthraquinones
%J Australian Journal of Chemistry
%D 1981/11/01
%V 34
%N 11
%P 2401-2421
%K 
%R https://doi.org/10.1071/CH9812401
%U https://www.publish.csiro.au/paper/CH9812401 
%X The insect anthraquinones kermesic acid (3) and laccaic acid D (2) have been synthesized efficiently, as have the plant anthraquinones aloesaponarin-I (4) and -11 (33). The syntheses were based on regiospecific Diels-Alder addition of the silyloxy dienes (10) and (11) to simpler quinones. Regiospecificity was controlled by 2(3)-chloro groups in the dienophiles or, for addition to certain naphthoquinones, by a hydroxy group peri to carbonyl. 
