120036-90-0

Basic information

• Product Name: 4H-1-Benzopyran-4-one, 3,5,7-tris(benzoyloxy)-2-[3,4-bis(benzoyloxy)phenyl]-
• CAS NO: 120036-90-0
• Molecular Formula: C50H30O12
• Molecular Weight: 822.781
• Mol File: 120036-90-0.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: 4H-1-Benzopyran-4-one, 3,5,7-tris(benzoyloxy)-2-[3,4-bis(benzoyloxy)phenyl]-(CAS DataBase Reference)
• NIST Chemistry Reference: 4H-1-Benzopyran-4-one, 3,5,7-tris(benzoyloxy)-2-[3,4-bis(benzoyloxy)phenyl]-(120036-90-0)
• EPA Substance Registry System: 4H-1-Benzopyran-4-one, 3,5,7-tris(benzoyloxy)-2-[3,4-bis(benzoyloxy)phenyl]-(120036-90-0)

Safety Data

• Hazardous Substances Data: 120036-90-0(Hazardous Substances Data)

Upstream product

• 98-88-4 benzoyl chloride 
• 153-18-4 rutin 
• 117-39-5 quercetol 

Relevant articles and documents

Synthesis and Antioxidant Activity of Quercetin Ethers

Quercetin (Q) methyl ethers were synthesized from CH3I under various conditions. The principal products from the reactions of Q with alkylhalides (CH3I, C4H9Br) in DMF were 3,7,4′-tri-O-alkyl ethers. The structures of the products were confirmed by PMR and 13C NMR spectra. The antioxidant activity of Q tetra- and tri-O-methyl ethers was demonstrated by chemiluminescence in model systems generating active oxygen species and promoting lipid peroxidation.

Regioselective O-derivatization of quercetin via ester intermediates. An improved synthesis of rhamnetin and development of a new mitochondriotropic derivative

The regioselective synthesis of several quercetin (3,3',4',5,7-pentahydroxy flavone) tetraesters bearing a single free OH on 5-C was achieved in good yield by proper choice of reaction conditions using common esterification procedures. Tetracetylated quercetin with the free OH on 7-C was selectively obtained instead via imidazole-promoted deacylation of the corresponding pentaester. Unambiguous structural characterization of the two isomeric tetraacetyl quercetin derivatives was obtained by combined HSQC and HMBC 2D-NMR analysis. These molecules can be used as starting materials for the regioselective synthesis of other derivatives. High yield syntheses of the natural polyphenol rhamnetin (7-O-methylquercetin) and of the new mitochondriotropic compound 7-(4-triphenylphosphoniumbutyl) quercetin iodide are reported as examples.