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Record Information
Version2.0
Created at2022-03-17 21:03:29 UTC
Updated at2022-03-17 21:03:30 UTC
NP-MRD IDNP0048870
Secondary Accession NumbersNone
Natural Product Identification
Common NameCinnamtannin A2
DescriptionCinnamtannin A2 belongs to the class of organic compounds known as biflavonoids and polyflavonoids. These are organic compounds containing at least two flavan/flavone units. These units are usually linked through CC or C-O-C bonds. Some examples include C2-O-C3, C2-O-C4, C3'-C3''', and C6-C8''. Cinnamtannin A2 is an extremely weak basic (essentially neutral) compound (based on its pKa). Outside of the human body, Cinnamtannin A2 is found, on average, in the highest concentration within chocolates and cocoa powders. Cinnamtannin A2 has also been detected, but not quantified in, a few different foods, such as chinese cinnamons, cocoa beans, and herbs and spices. This could make cinnamtannin A2 a potential biomarker for the consumption of these foods. Cinnamtannin A2 is found in Areca catechu , Calluna vulgaris, Crataegus laevigata, Crataegus oxyacantha , Crataegus rhipidophylla, Crataegus sinaica, Dioscorea cirrhosa, Fallopia multiflora, Guazuma ulmifolia, Malus pumila, Pseudotsuga menziesii, Rhaphiolepis umbellata and Rumex acetosa. Cinnamtannin A2 was first documented in 2013 (PMID: 23563558). A proanthocyanidin isolated from Cinnamomum cassia.
Structure
Thumb
Synonyms
ValueSource
Cinnamtannin IHMDB
Epicatechin tetramerHMDB
[Epicatechin(4b->8)]3-epicatechinHMDB
Chemical FormulaC60H50O24
Average Mass1155.0360 Da
Monoisotopic Mass1154.26920 Da
IUPAC Name(2R,3R,4R)-2-(3,4-dihydroxyphenyl)-8-[(2R,3R,4R)-2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-3,4-dihydro-2H-1-benzopyran-4-yl]-4-[(2R,3R,4S)-2-(3,4-dihydroxyphenyl)-4-[(2R,3R)-2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-3,4-dihydro-2H-1-benzopyran-8-yl]-3,5,7-trihydroxy-3,4-dihydro-2H-1-benzopyran-8-yl]-3,4-dihydro-2H-1-benzopyran-3,5,7-triol
Traditional Name(2R,3R,4R)-2-(3,4-dihydroxyphenyl)-8-[(2R,3R,4R)-2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-3,4-dihydro-2H-1-benzopyran-4-yl]-4-[(2R,3R,4S)-2-(3,4-dihydroxyphenyl)-4-[(2R,3R)-2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-3,4-dihydro-2H-1-benzopyran-8-yl]-3,5,7-trihydroxy-3,4-dihydro-2H-1-benzopyran-8-yl]-3,4-dihydro-2H-1-benzopyran-3,5,7-triol
CAS Registry Number86631-38-1
SMILES
O[C@@H]1CC2=C(O)C=C(O)C([C@@H]3[C@@H](O)[C@H](OC4=C([C@@H]5[C@@H](O)[C@H](OC6=C([C@@H]7[C@@H](O)[C@H](OC8=CC(O)=CC(O)=C78)C7=CC=C(O)C(O)=C7)C(O)=CC(O)=C56)C5=CC=C(O)C(O)=C5)C(O)=CC(O)=C34)C3=CC=C(O)C(O)=C3)=C2O[C@@H]1C1=CC=C(O)C(O)=C1
InChI Identifier
InChI=1S/C60H50O24/c61-23-13-34(71)42-41(14-23)81-55(20-2-6-26(63)31(68)10-20)51(78)48(42)44-36(73)17-38(75)46-50(53(80)57(83-59(44)46)22-4-8-28(65)33(70)12-22)47-39(76)18-37(74)45-49(52(79)56(84-60(45)47)21-3-7-27(64)32(69)11-21)43-35(72)16-29(66)24-15-40(77)54(82-58(24)43)19-1-5-25(62)30(67)9-19/h1-14,16-18,40,48-57,61-80H,15H2/t40-,48-,49+,50-,51-,52-,53-,54-,55-,56-,57-/m1/s1
InChI KeyQFLMUASKTWGRQE-JNIIMKSASA-N
Experimental Spectra
Not Available
Predicted Spectra
Not Available
Chemical Shift Submissions
Not Available
Species
Species of Origin
Species NameSourceReference
Areca catechuPlant
Calluna vulgarisLOTUS Database
Cinnamomum aromaticumFooDB
Crataegus laevigataLOTUS Database
Crataegus oxyacanthaPlant
Crataegus rhipidophyllaLOTUS Database
Crataegus sinaicaLOTUS Database
Dioscorea cirrhosaPlant
Fallopia multifloraLOTUS Database
Guazuma ulmifoliaLOTUS Database
Malus pumilaLOTUS Database
Pseudotsuga menziesiiPlant
Rhaphiolepis umbellataPlant
Rumex acetosaLOTUS Database
Theobroma cacaoFooDB
Chemical Taxonomy
Description Belongs to the class of organic compounds known as biflavonoids and polyflavonoids. These are organic compounds containing at least two flavan/flavone units. These units are usually linked through CC or C-O-C bonds. Some examples include C2-O-C3, C2-O-C4, C3'-C3''', and C6-C8''.
KingdomOrganic compounds
Super ClassPhenylpropanoids and polyketides
ClassFlavonoids
Sub ClassBiflavonoids and polyflavonoids
Direct ParentBiflavonoids and polyflavonoids
Alternative Parents
Substituents
  • C-type proanthocyanidin
  • B-type proanthocyanidin
  • Bi- and polyflavonoid skeleton
  • Proanthocyanidin
  • Catechin
  • Flavan-3-ol
  • Hydroxyflavonoid
  • 3'-hydroxyflavonoid
  • 7-hydroxyflavonoid
  • 5-hydroxyflavonoid
  • 4'-hydroxyflavonoid
  • 3-hydroxyflavonoid
  • Flavan
  • Chromane
  • 1-benzopyran
  • Benzopyran
  • Catechol
  • Phenol
  • 1-hydroxy-2-unsubstituted benzenoid
  • Alkyl aryl ether
  • 1-hydroxy-4-unsubstituted benzenoid
  • Benzenoid
  • Monocyclic benzene moiety
  • Secondary alcohol
  • Polyol
  • Organoheterocyclic compound
  • Oxacycle
  • Ether
  • Hydrocarbon derivative
  • Alcohol
  • Organic oxygen compound
  • Organooxygen compound
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Physical Properties
StateNot Available
Experimental Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
logP4.05ALOGPS
logP5.76ChemAxon
logS-3.3ALOGPS
pKa (Strongest Acidic)8.61ChemAxon
pKa (Strongest Basic)-5.2ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count24ChemAxon
Hydrogen Donor Count20ChemAxon
Polar Surface Area441.52 ŲChemAxon
Rotatable Bond Count7ChemAxon
Refractivity291.52 m³·mol⁻¹ChemAxon
Polarizability115.38 ųChemAxon
Number of Rings12ChemAxon
BioavailabilityNoChemAxon
Rule of FiveNoChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleYesChemAxon
HMDB IDHMDB0037661
DrugBank IDNot Available
Phenol Explorer Compound ID196
FoodDB IDFDB016784
KNApSAcK IDC00009107
Chemspider ID10272879
KEGG Compound IDC17625
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound16130899
PDB IDNot Available
ChEBI ID81227
Good Scents IDNot Available
References
General References
  1. Yamashita Y, Okabe M, Natsume M, Ashida H: Cinnamtannin A2, a tetrameric procyanidin, increases GLP-1 and insulin secretion in mice. Biosci Biotechnol Biochem. 2013;77(4):888-91. doi: 10.1271/bbb.130095. Epub 2013 Apr 7. [PubMed:23563558 ]