793-94-2Relevant academic research and scientific papers
REACTIONS OF KETENE ACETALS 15. REGIOSPECIFIC SYNTHESES OF ERYTHROLACCIN AND "7-HYDROXYERYTHROLACCIN".
Guay, Vincent,Brassard, Paul
, p. 5039 - 5046 (1984)
A new diene, 1,2-dimethoxy-1-trimethylsiloxy-1,3-pentadiene, has been prepared from crotonaldehyde via the cyanohydrin and the β,γ-unsaturated ester.The usefulness of the reagent is demonstrated by advantageous syntheses of the naturally occurring title-compounds and of various partially methylated analogues.The electron-donating substituents on the diene are disposed in order to illustrate the consequence of their oppossing electronic effects.
Chemistry of the Coccoidea. IX Pigments from the Lac Insect Austrotachardia acaciae (Hemiptera) and Associated Synthetic Work
Cameron, Donald W.,Feutrill, Geoffrey I.,Karge, Roger L.,Patti, Antonio F.
, p. 2481 - 2485 (2007/10/02)
Minor pigments of the lacciferid Austrotachardia acaciae Maskell include isoerythrolaccin and the new 7-hydroxyerythrolaccin whose structure was confirmed by synthesis.Severe treatment of certain derivatives of 1,3-dihydroxyanthraquinone with aluminium chloride has resulted in novel deoxygenation to the 1-hydroxy series.The 1,2-dimethyl anthraquinones, 3,6,8-trihydroxy-1,2-dimethylanthraquinone and 3,6,7,8-tetrahydroxy-1,2-dimethylanthraquinone, have been synthesized.Oxidation of the methyl groups has been explored as a possible route to the synthesis of the major pigment from A. acaciae, xantholaccaic acid B.
