119002-92-5

Basic information

• Product Name: (2R,3S,8R,9S,10S)-10-(2,4-Dihydroxy-phenyl)-8-(3,4-dihydroxy-phenyl)-2-(3-hydroxy-4-methoxy-phenyl)-3,4,9,10-tetrahydro-2H,8H-pyrano[2,3-f]chromene-3,5,9-triol
• CAS NO: 119002-92-5
• Molecular Weight: 576.557
• Mol File: 119002-92-5.mol
• Article Data: 5

Chemical Properties

• CAS DataBase Reference: (2R,3S,8R,9S,10S)-10-(2,4-Dihydroxy-phenyl)-8-(3,4-dihydroxy-phenyl)-2-(3-hydroxy-4-methoxy-phenyl)-3,4,9,10-tetrahydro-2H,8H-pyrano[2,3-f]chromene-3,5,9-triol(CAS DataBase Reference)
• NIST Chemistry Reference: (2R,3S,8R,9S,10S)-10-(2,4-Dihydroxy-phenyl)-8-(3,4-dihydroxy-phenyl)-2-(3-hydroxy-4-methoxy-phenyl)-3,4,9,10-tetrahydro-2H,8H-pyrano[2,3-f]chromene-3,5,9-triol(119002-92-5)
• EPA Substance Registry System: (2R,3S,8R,9S,10S)-10-(2,4-Dihydroxy-phenyl)-8-(3,4-dihydroxy-phenyl)-2-(3-hydroxy-4-methoxy-phenyl)-3,4,9,10-tetrahydro-2H,8H-pyrano[2,3-f]chromene-3,5,9-triol(119002-92-5)

Safety Data

• Hazardous Substances Data: 119002-92-5(Hazardous Substances Data)

Upstream product

• 123484-73-1 (+)-fisetinidol-(4β,8)-(+)-catechin O-methyl ether 
• 119065-89-3 (-)-fisetidinol-(4β,8)-(+)-catechin-O-methyl ether 
• 118964-34-4 (-)-Fisetinidol-(4α,8)-(+)-catechin 4-O(E)-methyl ether 
• 69912-75-0 (2R,3S)-2-(4'-hydroxy-3'-methoxyphenyl)chroman-3,5,7-triol 
• 154-23-4 catechin 

Downstream Products

• 104079-73-4 (2R,3S:8R,9S,10R)-3,9-diacetoxy-2,8-bis(3,4-dimethoxyphenyl)-10-(2,4-dimethoxyphenyl)-2,3-trans-8,9-trans-9,10-trans-3,4,9,10-tetrahydro-2H,8H-pyrano<2,3-h>chromene 
• 104079-73-4 (2R,3S,8R,9S,10R)-2,3-trans-8,9-trans-9,10-cis-3,9-diacetoxy-2,8-bis(3,4-dimethoxyphenyl)-10-(2,4-dimethoxyphenyl)-5-methoxy-3,4,9,10-tetrahydro-2H,8H-benzo<1,2-b; 3,4-b'>dipyran 

Relevant articles and documents

Novel Base-catalysed Rearrangements of (-)-Fisetinidol-(+)-catechin Profisetinidins with 2,3-trans-3,4-cis-Flavan-3-ol Constituent Units

The (-)-fisetinidol-(4β,8)-(+)-catechin-O-methyl ether (1) is subjetc to facile C-ring isomerization in NaHCO3-NaCO3 buffer solution to form a range of novel 8,9-cis-9,10-trans-and 8,9-trans-9,10-trans-3,4,9,10-tetrahydro-2H,8H-pyrano-chromenes (2)-(5); analogues (4) and (5) are representative of an unique class of phlobatannins in which the resorcinol A- and pyrocatechol B-rings are interchanged.

Oligomeric Flavanoids. Part 5. Base-catalysed C-Ring Isomerization of (+)-Fisetinidol-(+)-catechin Profisetinidins

The (+)-fisetinidol-(+)-catechin profisetinidins are subject to similar base-catalyzed C-ring isomerizations to the quasi-enantiomeric (-)-fisetinidol-(+)-catechins.Whereas "upper" 2,3-trans-3,4-trans-flavan-3-ol units are susceptible to stereospecific transformations, those species whith a 2,3-trans-3,4-cis-configuration react more rapidly in a stereospecific manner and are furthermore subject to isomerization with concominant interchange of resorcinol A- and pyrocatechol B-rings.These differences are explicable in terms of the effect of configuration at C-4 on both the rate of formation of intermediate B-ring quinone-methides and the recyclization step.This comparative study not only confirms the mechanism of A/B-ring interchange but also reveals serious shortcomings in the c.d. method for defining absolute configuration of phlobatannins with cis-trans and all-trans configuration of their C-rings.

OLIGOMERIC FLAVANOIDS. PART 3. STRUCTURE AND SYNTHESIS OF PHLOBATANNINS RELATED TO (-)-FISETINIDOL-(4α,6)- AND (4α,8)-(+)-CATECHIN PROFISETINIDINS

Several members of the novel class of natural 'phlobaphene' condensed tannins, representing the products of c-ring isomerization of 2,3-trans-3,4-trans-(-)-fisetinidol units present in (4,6)- and (4,8)-biflavanoid profisetinidins, have been charcterized b