28543-07-9

Basic information

• Product Name: THEAFLAVIN 3'-O-GALLATE
• Synonyms: THEAFLAVIN 3'-O-GALLATE;[(2S,3R)-5,7-dihydroxy-2-[6,8,9-trihydroxy-5-oxo-3-[(2S,3R)-3,5,7-trihydroxychroman-2-yl]-11-bicyclo[5.4.0]undeca-1,3,6,8,10-pentaenyl]chroman-3-yl] 3,4,5-trihydroxybenzoate;THEAFLAVIN3GALLATE(3'-ISOMERICFORM);THEAFLAVINMONOGALLATEB;3,4,5-Trihydroxybenzoic acid (2R,3R)-2-[8-[(2R,3R)-3,4-dihydro-3,5,7-trihydroxy-2H-1-benzopyran-2-yl]-3,4,6-trihydroxy-5-oxo-5H-benzocyclohepten-1-yl]-3,4-dihydro-5,7-dihydroxy-2H-1-benzopyran-3-yl ester;Theaflavin 2B;Theaflavin-3'-Gallate (TF-3'-G);3'-O-(3,4,5-Trihydroxybenzoyl)
• CAS NO: 28543-07-9
• Molecular Formula: C₃₆H₂₈O₁₆
• Molecular Weight: 704.63
• Product Categories: Miscellaneous Natural Products
• Mol File: 28543-07-9.mol
• Article Data: 4

Chemical Properties

• Boiling Point: 1165.288 °C at 760 mmHg
• Flash Point: 370.612 °C
• Appearance: /
• Density: 1.93
• Vapor Pressure: 0mmHg at 25°C
• Refractive Index: 1.897
• Storage Temp.: -20°C
• PKA: 6.55±0.20(Predicted)
• CAS DataBase Reference: THEAFLAVIN 3'-O-GALLATE(CAS DataBase Reference)
• NIST Chemistry Reference: THEAFLAVIN 3'-O-GALLATE(28543-07-9)
• EPA Substance Registry System: THEAFLAVIN 3'-O-GALLATE(28543-07-9)

Safety Data

• Hazardous Substances Data: 28543-07-9(Hazardous Substances Data)

Usage

Uses

Theaflavin-3''-O-gallate is a theaflavin found in black tea that has shown to induce apoptosis through promoting mitochondrial dysfunction in human prostate cancer cells.

InChI:InChI=1/C36H28O16/c37-15-6-20(39)17-10-25(44)34(50-26(17)8-15)13-1-12-2-19(30(45)33(48)29(12)32(47)24(43)3-13)35-28(11-18-21(40)7-16(38)9-27(18)51-35)52-36(49)14-4-22(41)31(46)23(42)5-14/h1-9,25,28,34-35,37-42,44-46,48H,10-11H2,(H,43,47)/t25-,28-,34-,35-/m1/s1

Upstream product

• 863-03-6 (-)-epicatechin gallate 
• 2596-50-1 (-)-epigallocathechin gallate 
• 970-73-0 epigallocatechin 

Relevant articles and documents

Specificity of tyrosinase-catalyzed synthesis of theaflavins

This study kinetically characterized the mechanism of the enzymatic synthesis of theaflavins (TFs) from catechins by mushroom tyrosinase (EC 1.14.18.1). In reactions containing one of four catechins, (-)-epicatechin (EC), (-)-epigallocatechin (EGC), and their galloylated forms (ECg and EGCg), they were oxidized by tyrosinase with apparent KM values of 3.78, 5.55, 0.80, and 3.05 mM, respectively, and with different consumption rates, of which EC was more than four times higher than those of the others. In reactions with binary combinations of catechins with tyrosinase, the synthesis of TF1 from EC and EGC occurred most efficiently, while the yields of mono- and di-galloylated TFs, TF2A, TF2B, and TF3, were low. Time-dependent changes in concentrations of the reactants suggested that the enzymatic oxidation of catechins and the subsequent non-enzymatic coupling redox reaction between the quinone derived from EC or ECg and the intact pyrogallol-type catechin (EGC or EGCg) proceeded concurrently. The latter reaction induced the rapid decrease of EGC and EGCg and it was remarkable for EGCg. So the efficiency of condensation of a pair of quinones from catechol- and pyrogallol-type catechins is restricted, critically influencing the yield of TFs. Using green tea extracts as mixtures of the four substrate catechins, tyrosinase produced TF1 most abundantly. Furthermore, a remarkable enhancement of production of TF2A and TF2B as well as TF1 was observed, when the initial concentration of EGCg was low. These results suggest that the catechin composition has an impact on yields of TFs.

Benzotropolone derivatives and modulation of inflammatory response

The present invention provides novel benzotropolone derivatives represented by the general formula: 1 including neotheaflavate B and EGCGCa. The benzotropolone derivatives of the present invention are effective antioxidant and anti-inflammatory agents. The present invention also provides novel method of synthesizing benzotropolone compounds in high yields and method of treating inflammatory conditions using benzotropolone containing compounds.