| Record Information |
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| Version | 2.0 |
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| Created at | 2022-09-03 05:00:26 UTC |
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| Updated at | 2022-09-03 05:00:26 UTC |
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| NP-MRD ID | NP0169110 |
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| Secondary Accession Numbers | None |
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| Natural Product Identification |
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| Common Name | 2-(3,4-dihydroxyphenyl)-4-[2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-3,4-dihydro-2h-1-benzopyran-8-yl]-3,4-dihydro-2h-1-benzopyran-3,5,7-triol |
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| Description | Ent-Epicatechin(4alpha->8)catechin, also known as procyanidin b, 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''. Ent-Epicatechin(4alpha->8)catechin is an extremely weak basic (essentially neutral) compound (based on its pKa). Outside of the human body, ent-Epicatechin(4alpha->8)catechin has been detected, but not quantified in, sago palms. 2-(3,4-dihydroxyphenyl)-4-[2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-3,4-dihydro-2h-1-benzopyran-8-yl]-3,4-dihydro-2h-1-benzopyran-3,5,7-triol is found in Acacia baileyana, Actinidia chinensis, Aesculus hippocastanum, Alhagi sparsifolia, Areca catechu, Banisteriopsis caapi, Begonia fagifolia, Bischofia javanica, Byrsonima crassifolia, Camellia reticulata, Camellia sinensis, Cassia fistula, Chimarrhis turbinata, Cinchona pubescens, Cinnamomum aromaticum, Cinnamomum bejolghota, Cinnamomum burmannii, Cistus incanus, Cola acuminata, Coleogyne ramosissima, Crataegus rhipidophylla, Crataegus sinaica, Croton lechleri, Cryptocarya obovata, Dioscorea bulbifera, Dioscorea cirrhosa, Erythroxylum novogranatense, Eucalyptus ovata, Fallopia multiflora, Garcinia mangostana, Geranium thunbergii, Guazuma ulmifolia, Hamamelis virginiana, Hibiscus cannabinus, Hypericum perforatum, Illicium anisatum, Juglans sigillata, Juniperus sabina, Kandelia candel, Litchi chinensis, Lotus corniculatus, Lotus uliginosus, Malus pumila, Gymnosporia senegalensis, Melastoma candidum, Nelia pillansii, Paullinia cupana, Pinus sylvestris, Platanus orientalis, Potentilla longifolia, Pseudotsuga menziesii, Psidium guajava, Pyrola incarnata, Quercus dentata, Quercus ilex, Quercus miyagii, Quercus phillyraeoides, Quercus robur, Rhizophora stylosa, Rhodiola semenovii, Rhododendron dauricum, Rosa henryi, Rumex acetosa, Saraca asoca, Terminalia catappa, Theobroma cacao, Toona sinensis, Trichilia catigua, Vaccinium vitis-idaea, Vicia faba, Zanthoxylum piperitum and Ziziphus jujuba. This could make ent-epicatechin(4alpha->8)catechin a potential biomarker for the consumption of these foods. |
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| Structure | OC1CC2=C(O)C=C(O)C(C3C(O)C(OC4=CC(O)=CC(O)=C34)C3=CC=C(O)C(O)=C3)=C2OC1C1=CC=C(O)C(O)=C1 InChI=1S/C30H26O12/c31-13-7-20(37)24-23(8-13)41-29(12-2-4-16(33)19(36)6-12)27(40)26(24)25-21(38)10-17(34)14-9-22(39)28(42-30(14)25)11-1-3-15(32)18(35)5-11/h1-8,10,22,26-29,31-40H,9H2 |
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| Synonyms | | Value | Source |
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| ent-Epicatechin(4a->8)catechin | Generator | | ent-Epicatechin(4α->8)catechin | Generator | | ent-Epicatechin-(4alpha->8)-catechin | HMDB | | Procyanidin b | HMDB | | ent-Epicatechin-(4a->8)-catechin | Generator | | ent-Epicatechin-(4α->8)-catechin | Generator |
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| Chemical Formula | C30H26O12 |
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| Average Mass | 578.5202 Da |
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| Monoisotopic Mass | 578.14243 Da |
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| IUPAC Name | 2-(3,4-dihydroxyphenyl)-8-[2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-3,4-dihydro-2H-1-benzopyran-4-yl]-3,4-dihydro-2H-1-benzopyran-3,5,7-triol |
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| Traditional Name | proanthocyanidin B1 |
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| CAS Registry Number | Not Available |
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| SMILES | OC1CC2=C(O)C=C(O)C(C3C(O)C(OC4=CC(O)=CC(O)=C34)C3=CC=C(O)C(O)=C3)=C2OC1C1=CC=C(O)C(O)=C1 |
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| InChI Identifier | InChI=1S/C30H26O12/c31-13-7-20(37)24-23(8-13)41-29(12-2-4-16(33)19(36)6-12)27(40)26(24)25-21(38)10-17(34)14-9-22(39)28(42-30(14)25)11-1-3-15(32)18(35)5-11/h1-8,10,22,26-29,31-40H,9H2 |
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| InChI Key | XFZJEEAOWLFHDH-UHFFFAOYSA-N |
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| Experimental Spectra |
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| Not Available | | Predicted Spectra |
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| | Spectrum Type | Description | Depositor ID | Depositor Organization | Depositor | Deposition Date | View |
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| 1D NMR | 13C NMR Spectrum (1D, 25 MHz, H2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 100 MHz, H2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 252 MHz, H2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 1000 MHz, H2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 50 MHz, H2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 200 MHz, H2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 75 MHz, H2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 300 MHz, H2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 101 MHz, H2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 400 MHz, H2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 126 MHz, H2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 500 MHz, H2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 151 MHz, H2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 600 MHz, H2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 176 MHz, H2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 700 MHz, H2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 201 MHz, H2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 800 MHz, H2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 226 MHz, H2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 900 MHz, H2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum |
| | Chemical Shift Submissions |
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| Not Available | | Species |
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| Species of Origin | |
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| Chemical Taxonomy |
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| 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''. |
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| Kingdom | Organic compounds |
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| Super Class | Phenylpropanoids and polyketides |
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| Class | Flavonoids |
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| Sub Class | Biflavonoids and polyflavonoids |
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| Direct Parent | Biflavonoids and polyflavonoids |
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| Alternative Parents | |
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| Substituents | - 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
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| Molecular Framework | Aromatic heteropolycyclic compounds |
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| External Descriptors | |
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| Physical Properties |
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| State | Not Available |
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| Experimental Properties | | Property | Value | Reference |
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| Melting Point | Not Available | Not Available | | Boiling Point | Not Available | Not Available | | Water Solubility | Not Available | Not Available | | LogP | Not Available | Not Available |
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| Predicted Properties | |
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