Epicatechin gallate - Misplaced Pages

(Redirected from Epicatechin 3-gallate) Not to be confused with EGCG.

Epicatechin gallate
Names


IUPAC name (2R,3R)-3′,4′,5,7-Tetrahydroxyflavan-3-yl 3,4,5-trihydroxybenzoate
Systematic IUPAC name (2R,3R)-2-(3,4-Dihydroxyphenyl)-5,7-dihydroxy-3,4-dihydro-2H-1-benzopyran-3-yl 3,4,5-trihydroxybenzoate
Other names ECG Epicatechin 3-gallate (−)-Epicatechin-3-O-gallate
Identifiers
CAS Number	1257-08-5
3D model (JSmol)	Interactive image
ChEBI	CHEBI:70255
ChEMBL	ChEMBL36327
ChemSpider	97034
ECHA InfoCard	100.116.252
KEGG	C22594
PubChem CID	107905
UNII	92587OVD8Z
CompTox Dashboard (EPA)	DTXSID70925231
InChI InChI=1S/C22H18O10/c23-11-6-14(25)12-8-19(32-22(30)10-4-16(27)20(29)17(28)5-10)21(31-18(12)7-11)9-1-2-13(24)15(26)3-9/h1-7,19,21,23-29H,8H2/t19-,21-/m1/s1Key: LSHVYAFMTMFKBA-TZIWHRDSSA-N InChI=1/C22H18O10/c23-11-6-14(25)12-8-19(32-22(30)10-4-16(27)20(29)17(28)5-10)21(31-18(12)7-11)9-1-2-13(24)15(26)3-9/h1-7,19,21,23-29H,8H2/t19-,21-/m1/s1Key: LSHVYAFMTMFKBA-TZIWHRDSBY
SMILES O=C(O2Cc3c(O2c1ccc(O)c(O)c1)cc(O)cc3O)c4cc(O)c(O)c(O)c4
Properties
Chemical formula	C₂₂H₁₈O₁₀
Molar mass	442.37 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). N verify (what is ?) Infobox references

Chemical compound

Epicatechin gallate (ECG) is a flavan-3-ol, a type of flavonoid, present in green tea. It is also reported in buckwheat and in grape.

The tea component epicatechin gallate is being researched because in vitro experiments showed it can reverse methicillin resistance in bacteria such as Staphylococcus aureus. Nevertheless, the compound is significantly degraded by steeping in boiling water, unlike related catechins.

Epicatechin, as well as many other flavonoids, has been found to act as a non-selective antagonist of the opioid receptors, albeit with somewhat low affinity.

References

^ Shiota, S; Shimizu, M; Mizushima, T; Ito, H; Hatano, T; Yoshida, T; Tsuchiya, T (1999). "Marked reduction in the minimum inhibitory concentration (MIC) of beta-lactams in methicillin-resistant Staphylococcus aureus produced by epicatechin gallate, an ingredient of green tea (Camellia sinensis)". Biological & Pharmaceutical Bulletin. 22 (12): 1388–90. doi:10.1248/bpb.22.1388. PMID 10746177.
Danila, Ana-Maria; Kotani, Akira; Hakamata, Hideki; Kusu, Fumiyo (2007). "Determination of Rutin, Catechin, Epicatechin, and Epicatechin Gallate in BuckwheatFagopyrum esculentumMoench by Micro-High-Performance Liquid Chromatography with Electrochemical Detection". Journal of Agricultural and Food Chemistry. 55 (4): 1139–43. doi:10.1021/jf062815i. PMID 17253718.
Souquet, Jean-Marc; Cheynier, Véronique; Brossaud, Franck; Moutounet, Michel (1996). "Polymeric proanthocyanidins from grape skins". Phytochemistry. 43 (2): 509–512. doi:10.1016/0031-9422(96)00301-9.
Saklar, Sena; Ertas, Erdal; Ozdemir, Ibrahim S.; Karadeniz, Bulent (October 2015). "Effects of different brewing conditions on catechin content and sensory acceptance in Turkish green tea infusions". Journal of Food Science and Technology. 52 (10): 6639–6646. doi:10.1007/s13197-015-1746-y. PMC 4573099. PMID 26396411.
Katavic PL, Lamb K, Navarro H, Prisinzano TE (August 2007). "Flavonoids as opioid receptor ligands: identification and preliminary structure-activity relationships". J. Nat. Prod. 70 (8): 1278–82. doi:10.1021/np070194x. PMC 2265593. PMID 17685652.

Agonists (abridged, full list)	2-AG 2-AGE (noladin ether) 11-Hydroxy-THC α-Amyrin · β-Amyrin AB-CHMINACA AM-1172 AM-1220 AM-1221 AM-1235 AM-2201 AM-2232 Anandamide Arvanil AZ-11713908 Cannabinol CB-13 CP 47,497 CP 55,940 Dimethylheptylpyran DEA ECG EGCG Epicatechin Gallocatechol (gallocatechin) Honokiol HU-210 JWH-007 JWH-015 JWH-018 JWH-073 Kavain L-759,633 Levonantradol Menabitan Nabilone Nabitan NADA O-1812 Oleamide Pravadoline Serinolamide A THC (dronabinol) UR-144 WIN 55,212-2 Yangonin
Inverse agonists	AM-251 INV-202 Monlunabant Rimonabant Surinabant Taranabant TM-38837 Zevaquenabant
Antagonists	AM-6545 Cannabidiol Cannabigerol Drinabant Falcarinol (carotatoxin) Hemopressin Ibipinabant LY-320,135 MK-9470 NESS-0327 O-2050 Otenabant PF-514273 PipISB Rosonabant Selonabant THCV VCHSR Virodhamine

CB₂Tooltip Cannabinoid receptor type 2

Agonists

Antagonists

NAGly
(GPR18)

Agonists	Abnormal cannabidiol ACPA AM251 Anandamide Cannabidiol NADGly THC (dronabinol) O-1602
Antagonists	PSB-CB5 O-1918

GPR55

Agonists	2-AGE (noladin ether) 2-ALPI Abnormal cannabidiol AM-251 CID1011163 CID1252842 CID1792579 CP 55,940 GSK-494581A Lysophosphatidylinositol ML-184 ML-185 ML-186 O-1602 Oleoylethanolamide Palmitoylethanolamide THC (dronabinol)
Antagonists	Cannabidiol CID-16020046 ML-191 ML-192 ML-193 O-1918 PSB-SB-487 PSB-SB-1202 PSB-SB-1203 Tetrahydromagnolol

GPR119

Agonists	2-Oleoylglycerol Anandamide APD668 AR-231,453 AS-1269574 MBX-2982 N-Oleoyldopamine Oleoylethanolamide Olvanil PSN-375,963 PSN-632,408

Transporter
(modulators)

eCBTsTooltip Endocannabinoid transporter	Inhibitors: 5'-DMH-CBD AM-404 AM-1172 Arachidonoyl serotonin Arvanil Cannabidiol Guineensine LY-2183240 O-2093 OMDM-2 Paracetamol (acetaminophen) SB-FI-26 UCM-707 URB-597 VDM-11 WOBE490 WOBE491 WOBE492

Enzyme
(modulators)

FAAHTooltip Fatty acid amide hydrolase	Inhibitors: 4-Nonylphenylboronic acid AACOCF₃ AM-404 Arachidonoyl serotonin BIA 10-2474 Biochanin A Genistein IDFP JNJ-1661010 JNJ-42165279 JZL-195 Kaempferol LY-2183240 MAFP Palmitoylisopropylamide Paracetamol (acetaminophen) PF-3845 PF-750 Redafamdastat (JZP-150, PF-04457845) SA-47 SA-57 TAK 21d TC-F 2 UCM710 URB-597 Activators: PDP-EA
MAGL	Inhibitors: ABX-1431 IDFP JJKK 048 JW 642 JZL-184 JZL-195 JZP-361 KML 29 MAFP MJN110 NAM Pristimerin URB-602
ABHD6	Inhibitors: JZP-169 JZP-430 KT182 KT185 KT195 KT203 LEI-106 ML294 ML295 ML296 UCM710 WWL-70
ABHD12	Inhibitors: Betulinic acid Maslinic acid MAFP Oleanolic acid Orlistat (tetrahydrolipstatin) Ursolic acid

Others

Precursors: Phosphatidylethanolamine
NAPE
Diacylglycerol

Others: 2-PG (directly potentiates activity of 2-AG at CB₁ receptor)
ARN-272 (FAAH-like anandamide transporter inhibitor)

See also: Receptor/signaling modulators; Cannabinoids (cannabinoids by structure)

Opioid receptor modulators

μ-opioid
(MOR)

Agonists
(abridged;
full list)

Antagonists

δ-opioid
(DOR)

Agonists

Antagonists

κ-opioid
(KOR)

Agonists

Antagonists

Nociceptin
(NOP)

Agonists

Antagonists

Others

Propeptides: β-Lipotropin (proendorphin)
Prodynorphin
Proenkephalin
Pronociceptin
Proopiomelanocortin (POMC)

Others: Kyotorphin (met-enkephalin releaser/degradation stabilizer)

v t e Flavan-3-ols and their glycosides
Flavan-3-ols	Afzelechin Catechin (Epicatechin) Epicatechin gallate Epigallocatechin Fisetinidol Gallocatechin Guibourtinidol Mesquitol Oritin Robinetinidol
O-methylated flavan-3ols	Meciadanol (3-O-methylcatechin) Ourateacatechin (4′-O-methyl-(−)-epigallocatechin)
Glycosides	Arthromerin A (Afzelechin-3-O-β-D-xylopyranoside) Arthromerin B (Afzelechin-3-O-β-D-glucopyranoside) Catechin-3-O-glucoside Catechin-3'-O-glucoside Catechin-4'-O-glucoside Catechin-5-O-glucoside Catechin-7-O-glucoside (+)-Catechin 7-O-β-D-xylopyranoside Epicatechin-3′-O-glucoside Glochiflavanoside A, B, C D Polydine ((+)-catechin 7-O-α-L-arabinoside) Symplocoside (3'-O-methyl-(-)-epicatechin 7-O-β-D-glucopyranoside)
Acetylated	Phylloflavan
Gallate esters	Epigallocatechin gallate Gallocatechin gallate
Misc.	Thearubigins

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References

See also