| Record Information |
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| Version | 2.0 |
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| Created at | 2022-04-27 22:58:44 UTC |
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| Updated at | 2022-04-27 22:58:44 UTC |
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| NP-MRD ID | NP0051718 |
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| Secondary Accession Numbers | None |
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| Natural Product Identification |
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| Common Name | 5,6-Dehydrokawain |
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| Description | 5,6-Dihydro-5-hydroxy-6-methyl-2H-pyran-2-one, also known as 56-dehydrokawain or (e)-4-methoxy-6-(2-phenylethenyl)-2H-pyran-2-one, belongs to the class of organic compounds known as kavalactones. These are lactones, which is structurally characterized by a benzene ring and a pyranone moiety, linked to each other to form a 4-methoxy-6-(2-phenylethyl)-2H-pyran-2-one skeleton. 5,6-Dihydro-5-hydroxy-6-methyl-2H-pyran-2-one is an extremely weak basic (essentially neutral) compound (based on its pKa). Outside of the human body, 5,6-Dihydro-5-hydroxy-6-methyl-2H-pyran-2-one has been detected, but not quantified in, beverages. This could make 5,6-dihydro-5-hydroxy-6-methyl-2H-pyran-2-one a potential biomarker for the consumption of these foods. 5,6-Dehydrokawain is found in Alpinia blepharocalyx, Alpinia mutica, Alpinia roxburghii, Alpinia zerumbet, Aniba firmula, Boesenbergia rotunda, Alpinia speciosa , Lindera umbellata , Persicaria lapathifolia, Piper cubeba, Piper lolot, Piper methysticum and Piper sanctum. Found in kava (Piper methysticum). |
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| Structure | COC1=CC(=O)OC(\C=C\C2=CC=CC=C2)=C1 InChI=1S/C14H12O3/c1-16-13-9-12(17-14(15)10-13)8-7-11-5-3-2-4-6-11/h2-10H,1H3/b8-7+ |
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| Synonyms | | Value | Source |
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| 56-Dehydrokawain | HMDB | | 56-Dehydrokawin | HMDB | | (e)-4-Methoxy-6-(2-phenylethenyl)-2H-pyran-2-one | HMDB | | 2H-Pyran-2-one, 4-methoxy-6-(2-phenylethenyl)-, (e)- (9ci) | HMDB | | 4-Methoxy-6-(2-phenylethenyl)-(e)-2H-pyran-2-one | HMDB | | 4-Methoxy-6-(2-phenylethenyl)-2H-pyran-2-one | HMDB | | 4-Methoxy-6-styryl-(e)-2H-pyran-2-one | HMDB | | 4-Methoxy-6-styryl-2H-pyran-2-one | HMDB | | 4-Methoxy-6-[(e)-2-phenylethenyl]-2H-pyran-2-one | HMDB | | 4-Methoxy-6-[(e)-2-phenylvinyl]-2H-pyran-2-one | HMDB | | 5,6-Dehydrokawain | HMDB | | Demethoxyyangonin | HMDB | | Desmethoxyyangonin | HMDB | | DMY | HMDB | | 5,6-Dehydrokawain, (e)-isomer | HMDB |
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| Chemical Formula | C14H12O3 |
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| Average Mass | 228.2433 Da |
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| Monoisotopic Mass | 228.07864 Da |
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| IUPAC Name | 4-methoxy-6-[(E)-2-phenylethenyl]-2H-pyran-2-one |
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| Traditional Name | desmethoxyyangonin |
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| CAS Registry Number | Not Available |
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| SMILES | COC1=CC(=O)OC(\C=C\C2=CC=CC=C2)=C1 |
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| InChI Identifier | InChI=1S/C14H12O3/c1-16-13-9-12(17-14(15)10-13)8-7-11-5-3-2-4-6-11/h2-10H,1H3/b8-7+ |
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| InChI Key | DKKJNZYHGRUXBS-BQYQJAHWSA-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, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 100 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 252 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 1000 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 50 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 200 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 75 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 300 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 101 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 400 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 126 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 500 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 151 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 600 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 176 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 700 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 201 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 800 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 226 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 900 MHz, D2O, 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 kavalactones. These are lactones, which is structurally characterized by a benzene ring and a pyranone moiety, linked to each other to form a 4-methoxy-6-(2-phenylethyl)-2H-pyran-2-one skeleton. |
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| Kingdom | Organic compounds |
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| Super Class | Phenylpropanoids and polyketides |
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| Class | Kavalactones |
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| Sub Class | Not Available |
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| Direct Parent | Kavalactones |
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| Alternative Parents | |
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| Substituents | - Kavalactone
- Styrene
- Alkyl aryl ether
- Pyranone
- Benzenoid
- Pyran
- Monocyclic benzene moiety
- Heteroaromatic compound
- Vinylogous ester
- Lactone
- Oxacycle
- Organoheterocyclic compound
- Ether
- Hydrocarbon derivative
- Organooxygen compound
- Organic oxygen compound
- Organic oxide
- Aromatic heteromonocyclic compound
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| Molecular Framework | Aromatic heteromonocyclic 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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