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Record Information
Version2.0
Created at2022-09-07 05:43:23 UTC
Updated at2022-09-07 05:43:24 UTC
NP-MRD IDNP0244838
Secondary Accession NumbersNone
Natural Product Identification
Common Name(2r)-4,12-diacetyl-5,11,13-trihydroxy-2,10-dimethyl-8-oxatricyclo[7.4.0.0²,⁷]trideca-1(13),4,6,9,11-pentaen-3-one
DescriptionIsousnic acid, also known as isousnate, belongs to the class of organic compounds known as acetophenones. These are organic compounds containing the acetophenone structure. (2r)-4,12-diacetyl-5,11,13-trihydroxy-2,10-dimethyl-8-oxatricyclo[7.4.0.0²,⁷]trideca-1(13),4,6,9,11-pentaen-3-one is found in Parmotrema reticulatum, Ramalina hierrensis and Xanthoparmelia vagans. (2r)-4,12-diacetyl-5,11,13-trihydroxy-2,10-dimethyl-8-oxatricyclo[7.4.0.0²,⁷]trideca-1(13),4,6,9,11-pentaen-3-one was first documented in 2011 (PMID: 21351753). Based on a literature review a small amount of articles have been published on Isousnic acid (PMID: 34323187) (PMID: 33749458).
Structure
Thumb
Synonyms
ValueSource
IsousnateGenerator
Chemical FormulaC18H16O7
Average Mass344.3190 Da
Monoisotopic Mass344.08960 Da
IUPAC Name(2R)-4,12-diacetyl-5,11,13-trihydroxy-2,10-dimethyl-8-oxatricyclo[7.4.0.0^{2,7}]trideca-1(13),4,6,9,11-pentaen-3-one
Traditional Name(2R)-4,12-diacetyl-5,11,13-trihydroxy-2,10-dimethyl-8-oxatricyclo[7.4.0.0^{2,7}]trideca-1(13),4,6,9,11-pentaen-3-one
CAS Registry NumberNot Available
SMILES
CC(=O)C1=C(O)C=C2OC3=C(C)C(O)=C(C(C)=O)C(O)=C3[C@@]2(C)C1=O
InChI Identifier
InChI=1S/C18H16O7/c1-6-14(22)12(8(3)20)15(23)13-16(6)25-10-5-9(21)11(7(2)19)17(24)18(10,13)4/h5,21-23H,1-4H3/t18-/m0/s1
InChI KeyGRIDHCOCFJSWSY-SFHVURJKSA-N
Experimental Spectra
Not Available
Predicted Spectra
Spectrum TypeDescriptionDepositor IDDepositor OrganizationDepositorDeposition DateView
1D NMR13C NMR Spectrum (1D, 25 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 100 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 252 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 1000 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 50 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 200 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 75 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 300 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 101 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 400 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 126 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 500 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 151 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 600 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 176 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 700 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 201 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 800 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 226 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 900 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
Chemical Shift Submissions
Not Available
Species
Species of Origin
Species NameSourceReference
Parmotrema reticulatumLOTUS Database
Ramalina hierrensisLOTUS Database
Xanthoparmelia vagansLOTUS Database
Chemical Taxonomy
Description Belongs to the class of organic compounds known as acetophenones. These are organic compounds containing the acetophenone structure.
KingdomOrganic compounds
Super ClassBenzenoids
ClassBenzene and substituted derivatives
Sub ClassAcetophenones
Direct ParentAcetophenones
Alternative Parents
Substituents
  • Acetophenone
  • Coumaran
  • Aryl ketone
  • Aryl alkyl ketone
  • Phenol
  • Vinylogous acid
  • Ketone
  • Oxacycle
  • Polyol
  • Enol
  • Organoheterocyclic compound
  • Hydrocarbon derivative
  • Organic oxide
  • Organooxygen compound
  • Organic oxygen compound
  • Carbonyl group
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External DescriptorsNot Available
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
logP2.53ChemAxon
pKa (Strongest Acidic)3.62ChemAxon
pKa (Strongest Basic)-5.3ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count7ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area121.13 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity90.65 m³·mol⁻¹ChemAxon
Polarizability34.23 ųChemAxon
Number of Rings3ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
HMDB IDNot Available
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FoodDB IDNot Available
KNApSAcK IDNot Available
Chemspider ID68023996
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound91739360
PDB IDNot Available
ChEBI IDNot Available
Good Scents IDNot Available
References
General References
  1. Urena-Vacas I, Burgos EG, Divakar PK, Gomez-Serranillos MP: Dibenzofurans from Lichens - A Pharmacological Overview. Curr Top Med Chem. 2021;21(26):2397-2408. doi: 10.2174/1568026621666210728095214. [PubMed:34323187 ]
  2. Bui VM, Huynh BLC, Pham NKT, Nguyen TAT, Nguyen TTT, Nguyen KPP, Nguyen TP: Usneaceratins A and B, two new secondary metabolites from the lichen Usnea ceratina. Nat Prod Res. 2022 Aug;36(15):3945-3950. doi: 10.1080/14786419.2021.1901288. Epub 2021 Mar 22. [PubMed:33749458 ]
  3. Goel M, Dureja P, Rani A, Uniyal PL, Laatsch H: Isolation, characterization and antifungal activity of major constituents of the Himalayan lichen Parmelia reticulata Tayl. J Agric Food Chem. 2011 Mar 23;59(6):2299-307. doi: 10.1021/jf1049613. Epub 2011 Feb 25. [PubMed:21351753 ]
  4. LOTUS database [Link]