Record Information |
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Version | 5.0 |
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Status | Expected but not Quantified |
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Creation Date | 2012-09-11 20:52:54 UTC |
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Update Date | 2022-03-07 02:54:40 UTC |
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HMDB ID | HMDB0035858 |
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Secondary Accession Numbers | |
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Metabolite Identification |
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Common Name | Obacunone |
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Description | Obacunone, also known as casimirolide or tricoccin S3, belongs to the class of organic compounds known as limonoids. These are highly oxygenated, modified terpenoids with a prototypical structure either containing or derived from a precursor with a 4,4,8-trimethyl-17-furanylsteroid skeleton. All naturally occurring citrus limonoids contain a furan ring attached to the D-ring, at C-17, as well as oxygen containing functional groups at C-3, C-4, C-7, C-16 and C-17. Obacunone is an extremely weak basic (essentially neutral) compound (based on its pKa). |
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Structure | CC12CCC3C4(C)C=CC(=O)OC(C)(C)C4CC(=O)C3(C)C11OC1C(=O)OC2C1=COC=C1 InChI=1S/C26H30O7/c1-22(2)16-12-17(27)25(5)15(23(16,3)9-7-18(28)32-22)6-10-24(4)19(14-8-11-30-13-14)31-21(29)20-26(24,25)33-20/h7-9,11,13,15-16,19-20H,6,10,12H2,1-5H3 |
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Synonyms | Value | Source |
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Casimirolide | HMDB | Obacunoic acid, eta-lactone | HMDB | Tricoccin S3 | HMDB |
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Chemical Formula | C26H30O7 |
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Average Molecular Weight | 454.5122 |
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Monoisotopic Molecular Weight | 454.199153314 |
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IUPAC Name | 7-(furan-3-yl)-1,8,12,17,17-pentamethyl-3,6,16-trioxapentacyclo[9.9.0.0²,⁴.0²,⁸.0¹²,¹⁸]icos-13-ene-5,15,20-trione |
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Traditional Name | 7-(furan-3-yl)-1,8,12,17,17-pentamethyl-3,6,16-trioxapentacyclo[9.9.0.0²,⁴.0²,⁸.0¹²,¹⁸]icos-13-ene-5,15,20-trione |
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CAS Registry Number | 751-03-1 |
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SMILES | CC12CCC3C4(C)C=CC(=O)OC(C)(C)C4CC(=O)C3(C)C11OC1C(=O)OC2C1=COC=C1 |
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InChI Identifier | InChI=1S/C26H30O7/c1-22(2)16-12-17(27)25(5)15(23(16,3)9-7-18(28)32-22)6-10-24(4)19(14-8-11-30-13-14)31-21(29)20-26(24,25)33-20/h7-9,11,13,15-16,19-20H,6,10,12H2,1-5H3 |
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InChI Key | MAYJEFRPIKEYBL-UHFFFAOYSA-N |
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Chemical Taxonomy |
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Description | Belongs to the class of organic compounds known as limonoids. These are highly oxygenated, modified terpenoids with a prototypical structure either containing or derived from a precursor with a 4,4,8-trimethyl-17-furanylsteroid skeleton. All naturally occurring citrus limonoids contain a furan ring attached to the D-ring, at C-17, as well as oxygen containing functional groups at C-3, C-4, C-7, C-16 and C-17. |
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Kingdom | Organic compounds |
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Super Class | Lipids and lipid-like molecules |
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Class | Prenol lipids |
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Sub Class | Triterpenoids |
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Direct Parent | Limonoids |
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Alternative Parents | |
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Substituents | - Limonoid skeleton
- Naphthopyran
- Naphthalene
- 1,4-dioxepane
- Delta valerolactone
- Dioxepane
- Delta_valerolactone
- Dicarboxylic acid or derivatives
- Pyran
- Oxane
- Heteroaromatic compound
- Furan
- Alpha,beta-unsaturated carboxylic ester
- Enoate ester
- Lactone
- Ketone
- Carboxylic acid ester
- Oxacycle
- Ether
- Oxirane
- Dialkyl ether
- Organoheterocyclic compound
- Carboxylic acid derivative
- Organic oxygen compound
- Hydrocarbon derivative
- Organic oxide
- Carbonyl group
- Organooxygen compound
- Aromatic heteropolycyclic compound
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Molecular Framework | Aromatic heteropolycyclic compounds |
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External Descriptors | Not Available |
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Ontology |
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Physiological effect | Not Available |
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Disposition | |
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Process | |
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Role | |
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Physical Properties |
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State | Solid |
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Experimental Molecular Properties | Property | Value | Reference |
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Melting Point | 229 - 230 °C | Not Available | Boiling Point | Not Available | Not Available | Water Solubility | Not Available | Not Available | LogP | Not Available | Not Available |
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Experimental Chromatographic Properties | Not Available |
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Predicted Molecular Properties | |
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Predicted Chromatographic Properties | Predicted Collision Cross SectionsPredicted Kovats Retention IndicesUnderivatizedDerivatized |
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| GC-MS SpectraSpectrum Type | Description | Splash Key | Deposition Date | Source | View |
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Predicted GC-MS | Predicted GC-MS Spectrum - Obacunone GC-MS (Non-derivatized) - 70eV, Positive | splash10-03g3-4763900000-f92282a5dc1cc0f37780 | 2017-09-01 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - Obacunone GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum |
MS/MS SpectraSpectrum Type | Description | Splash Key | Deposition Date | Source | View |
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Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Obacunone 10V, Positive-QTOF | splash10-0a4i-0002900000-e1ec4288c41df91d3ba3 | 2016-06-03 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Obacunone 20V, Positive-QTOF | splash10-000i-0025900000-6a379fce8acd6dafc36d | 2016-06-03 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Obacunone 40V, Positive-QTOF | splash10-0f6t-9324100000-2e07d772eab4f19d665e | 2016-06-03 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Obacunone 10V, Negative-QTOF | splash10-0pb9-0001900000-91f82701dfbe9c1b8937 | 2016-08-03 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Obacunone 20V, Negative-QTOF | splash10-0pbi-0002900000-67e1b74e789b5b5f69bf | 2016-08-03 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Obacunone 40V, Negative-QTOF | splash10-016s-9006000000-9e9ffb6bdd1b887e9452 | 2016-08-03 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Obacunone 10V, Positive-QTOF | splash10-0a4i-0000900000-edd8aed905ca850e4d7a | 2021-09-23 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Obacunone 20V, Positive-QTOF | splash10-0a4i-0044900000-ce3894bf62d35dff6da5 | 2021-09-23 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Obacunone 40V, Positive-QTOF | splash10-03xu-2952200000-55cb094ddec8d0b8027d | 2021-09-23 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Obacunone 10V, Negative-QTOF | splash10-0ufr-0000900000-2a1dbb5cddee36a5b409 | 2021-09-24 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Obacunone 20V, Negative-QTOF | splash10-0udi-0000900000-f1afb1f1fe1011d9791e | 2021-09-24 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Obacunone 40V, Negative-QTOF | splash10-0kk9-1023900000-aeeeda4f35507c3c79e6 | 2021-09-24 | Wishart Lab | View Spectrum |
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