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Record Information
Version2.0
Created at2022-09-03 23:23:32 UTC
Updated at2022-09-03 23:23:32 UTC
NP-MRD IDNP0184298
Secondary Accession NumbersNone
Natural Product Identification
Common Name8-benzoyl-2-(1,2-dihydroxyhex-3-en-1-yl)-6,9-dihydroxy-8-methoxy-3-methyl-1-oxa-7-azaspiro[4.4]nona-2,6-dien-4-one
DescriptionPseurotin A belongs to the class of organic compounds known as alkyl-phenylketones. These are aromatic compounds containing a ketone substituted by one alkyl group, and a phenyl group. While it is unknown how the azaspirocyclic core of the pseurotin family of natural products is made, the post polyketide synthase modifications are known. Pseurotin A is a secondary metabolite of Aspergillus. Pseurotin A is an extremely weak basic (essentially neutral) compound (based on its pKa). PsoC codes for a methyltransferase, which methylates the tertiary alcohol closest to the benzoyl moiety on C8. This epoxide is spontaneously hydrolyzed by either an SN2 mechanism to form pseurotin A, or by an SN2’ mechanism to form pseurotin D. PsoD codes for a cytochrome P450, which is responsible for oxidizing the benzyl carbon (C17) to the conjugated ketone. PsoF is unique in that its gene is encoded separate from the pseurotin gene cluster and is responsible for the epoxidation of the trans double bond that remains in the tail. PsoE is predicted to be a glutathione S-transferase gene, and isomerizes the CC bond furthest down the tail from the E stereoisomer to the Z stereoisomer. 8-benzoyl-2-(1,2-dihydroxyhex-3-en-1-yl)-6,9-dihydroxy-8-methoxy-3-methyl-1-oxa-7-azaspiro[4.4]nona-2,6-dien-4-one is found in Aspergillus fumigatus, Aspergillus insulicola and Penicillium canescens. In-vivo and in-vitro studies showed the unique mechanism involved in the modification ezymes PsoC, PsoD, PsoE, and PsoF.
Structure
Thumb
Synonyms
ValueSource
PseurotinMeSH
Pseurotin aMeSH
Chemical FormulaC22H25NO8
Average Mass431.4410 Da
Monoisotopic Mass431.15802 Da
IUPAC Name8-benzoyl-2-(1,2-dihydroxyhex-3-en-1-yl)-9-hydroxy-8-methoxy-3-methyl-1-oxa-7-azaspiro[4.4]non-2-ene-4,6-dione
Traditional Name8-benzoyl-2-(1,2-dihydroxyhex-3-en-1-yl)-9-hydroxy-8-methoxy-3-methyl-1-oxa-7-azaspiro[4.4]non-2-ene-4,6-dione
CAS Registry NumberNot Available
SMILES
CCC=CC(O)C(O)C1=C(C)C(=O)C2(O1)C(O)C(NC2=O)(OC)C(=O)C1=CC=CC=C1
InChI Identifier
InChI=1S/C22H25NO8/c1-4-5-11-14(24)15(25)16-12(2)17(26)21(31-16)19(28)22(30-3,23-20(21)29)18(27)13-9-7-6-8-10-13/h5-11,14-15,19,24-25,28H,4H2,1-3H3,(H,23,29)
InChI KeySLYDIPAXCVVRNY-UHFFFAOYSA-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
Aspergillus fumigatusLOTUS Database
Aspergillus insulicolaLOTUS Database
Penicillium canescensLOTUS Database
Chemical Taxonomy
Description Belongs to the class of organic compounds known as alkyl-phenylketones. These are aromatic compounds containing a ketone substituted by one alkyl group, and a phenyl group.
KingdomOrganic compounds
Super ClassOrganic oxygen compounds
ClassOrganooxygen compounds
Sub ClassCarbonyl compounds
Direct ParentAlkyl-phenylketones
Alternative Parents
Substituents
  • Alkyl-phenylketone
  • Benzoyl
  • Aryl alkyl ketone
  • Monocyclic benzene moiety
  • 3-furanone
  • Pyrrolidone
  • 2-pyrrolidone
  • Benzenoid
  • Dihydrofuran
  • Pyrrolidine
  • Vinylogous ester
  • Carboxamide group
  • Lactam
  • Secondary alcohol
  • Secondary carboxylic acid amide
  • Oxacycle
  • Carboxylic acid derivative
  • Azacycle
  • Organoheterocyclic compound
  • Organonitrogen compound
  • Hydrocarbon derivative
  • Organic oxide
  • Alcohol
  • Organic nitrogen compound
  • Organopnictogen compound
  • 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
logP1.37ALOGPS
logP1.23ChemAxon
logS-3.2ALOGPS
pKa (Strongest Acidic)9.74ChemAxon
pKa (Strongest Basic)-3.4ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count8ChemAxon
Hydrogen Donor Count4ChemAxon
Polar Surface Area142.39 ŲChemAxon
Rotatable Bond Count7ChemAxon
Refractivity110.4 m³·mol⁻¹ChemAxon
Polarizability43.3 ųChemAxon
Number of Rings3ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleYesChemAxon
HMDB IDNot Available
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FoodDB IDNot Available
KNApSAcK IDNot Available
Chemspider IDNot Available
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkPseurotin A
METLIN IDNot Available
PubChem Compound434331
PDB IDNot Available
ChEBI IDNot Available
Good Scents IDNot Available
References
General References
  1. LOTUS database [Link]