167961-22-0

Upstream product

• 167961-20-8 2,4-Dimethoxy-3-isopropyl-N,N-diethylbenzamide 
• 167961-19-5 2,4-dimethoxy-3-isopropylbenzoic acid 
• 173428-02-9 2,4-Dimethoxy-3-isopropylbenzoic chloride 
• 7311-34-4 3,5-dimethoxybenzaldehdye 
• 167961-21-9 5,7-Dimethoxy-6-isopropyl-3-(3,5-dimethoxyphenyl)-3H-isobenzofuranone 
• 144707-45-9 2,4-Dimethoxy-3-isopropyl-benzaldehyde 
• 16700-61-1 1,3-dimethoxy-2-(1-methylethyl)benzene 

Relevant academic research and scientific papers

Syntheses, Constitutions and Properties of Stentorin and Isostentorin

Stentorin and Isostentorin were synthesized from 2-isopropyl-1,3,6,8-tetrahydroxyanthrone by dimerization and chromatographic separation of the resulting regioisomers.The anthrone was prepared in four steps starting from easily available properly substituted benzene derivatives; the overall yield of the stentorins was 11percent.The constitutions of stentorin and isostentorin could be unequivocally assigned from the 1H NMR spectra of their potassium salts and were found to be in agreement with those derived recently by means of a rational synthesis.The spectroscopic, dissociation, and acid-base properties in ground and excited states as well as the chiroptical properties of the human serum albumin complexes were investigated and discussed comparing them with respective data of hypericin, fringelite D, and the natural Stentor pigment. - Keywords: Stentorin; Isostentorin; Synthesis; Dissociation; Protonation; Deprotonation; Spectroscopic properties; Association

A Facile Synthesis of Stentorin, the Photoreceptor of Stentor coeruleus

Stentorin, a protozoan photoreceptor, was effectively synthesized via the Ullmann coupling reaction of 5-bromo-2-isopropyl-1,3,5,8-tetramethoxyanthraquinone, which was prepared from 3-isopropyl-2,4-dimethoxy-6-(3,5-dimethoxybenzyl)benzoic acid via intramolecular Friedel-Crafts reaction and regioselective bromination.