
%0 Journal Article
%A Gough, JH 
%A Sutherland, MD 
%T Pigments of marine animals. IX. A synthesis of 6-Acetyl-2,3,5,7-tetrahydroxy-1,4-naphthoquinone; Its status as an echinoid pigment
%J Australian Journal of Chemistry
%D 1970/09/01
%V 23
%N 9
%P 1839-1846
%K 
%R https://doi.org/10.1071/CH9701839
%U https://www.publish.csiro.au/paper/CH9701839 
%X 6-Acetyl-2,3,5,7-tetrahydroxy-1,4-naphthoquinone (1) is obtained from 1,2,3,4,5,7-hexaacetoxynaphthalene by Fries rearrangement, hydrolysis, and oxidation, but differs in properties from the substance described in the literature as a spine pigment of Echinothrix diadema Linn., E. calamaris Pallis, and Echinometra oblonga Blainville and claimed to be (1). The synthetic quinone (1) is very probably identical with Lederer's spinochrome G from Paracentrotus lividus Lamarck. Paperchromatographic data for various echinoid pigments and other naphthoquinones is presented. 
