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Record Information
Version2.0
Created at2022-03-17 20:50:13 UTC
Updated at2022-03-17 20:50:13 UTC
NP-MRD IDNP0048046
Secondary Accession NumbersNone
Natural Product Identification
Common NameCucurbitacin C
DescriptionCucurbitacin C belongs to the class of organic compounds known as cucurbitacins. These are polycyclic compounds containing the tetracyclic cucurbitane nucleus skeleton, 19-(10->9b)-abeo-10alanost-5-ene (also known as 9b-methyl-19-nor lanosta-5-ene), with a variety of oxygenation functionalities at different positions. Cucurbitacin C is an extremely weak basic (essentially neutral) compound (based on its pKa). Outside of the human body, Cucurbitacin C has been detected, but not quantified in, cucumbers and fruits. Cucurbitacin C is found in Bryonia alba , Citrullus colocynthis , Cucumis sativus and Cucurbita foetidissima. This could make cucurbitacin C a potential biomarker for the consumption of these foods.
Structure
Thumb
Synonyms
ValueSource
Cucurbitacine (c)HMDB
(3E)-6-[5,13-Dihydroxy-1-(hydroxymethyl)-6,6,11,15-tetramethyl-17-oxotetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadec-7-en-14-yl]-6-hydroxy-2-methyl-5-oxohept-3-en-2-yl acetic acidGenerator
Cucurbitacin CMeSH
Chemical FormulaC32H48O8
Average Mass560.7187 Da
Monoisotopic Mass560.33492 Da
IUPAC Name(3E)-6-[5,13-dihydroxy-1-(hydroxymethyl)-6,6,11,15-tetramethyl-17-oxotetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadec-7-en-14-yl]-6-hydroxy-2-methyl-5-oxohept-3-en-2-yl acetate
Traditional Namecucurbitacin C
CAS Registry Number5988-76-1
SMILES
CC(=O)OC(C)(C)\C=C\C(=O)C(C)(O)C1C(O)CC2(C)C3CC=C4C(CCC(O)C4(C)C)C3(CO)C(=O)CC12C
InChI Identifier
InChI=1S/C32H48O8/c1-18(34)40-27(2,3)14-13-24(37)31(8,39)26-21(35)15-29(6)22-11-9-19-20(10-12-23(36)28(19,4)5)32(22,17-33)25(38)16-30(26,29)7/h9,13-14,20-23,26,33,35-36,39H,10-12,15-17H2,1-8H3/b14-13+
InChI KeyDGIGXLXLGBAJJN-BUHFOSPRSA-N
Experimental Spectra
Not Available
Predicted Spectra
Not Available
Chemical Shift Submissions
Not Available
Species
Species of Origin
Species NameSourceReference
Bryonia albaPlant
Citrullus colocynthisPlant
Cucumis sativusLOTUS Database
Cucumis sativus L.FooDB
Cucurbita foetidissimaLOTUS Database
Chemical Taxonomy
Description Belongs to the class of organic compounds known as cucurbitacins. These are polycyclic compounds containing the tetracyclic cucurbitane nucleus skeleton, 19-(10->9b)-abeo-10alanost-5-ene (also known as 9b-methyl-19-nor lanosta-5-ene), with a variety of oxygenation functionalities at different positions.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassSteroids and steroid derivatives
Sub ClassCucurbitacins
Direct ParentCucurbitacins
Alternative Parents
Substituents
  • Cucurbitacin skeleton
  • Triterpenoid
  • 22-oxosteroid
  • 21-oxosteroid
  • 20-hydroxysteroid
  • Steroid ester
  • 3-hydroxy-delta-5-steroid
  • Hydroxysteroid
  • 3-hydroxysteroid
  • 11-oxosteroid
  • Oxosteroid
  • 16-hydroxysteroid
  • Delta-5-steroid
  • Acyloin
  • Acryloyl-group
  • Alpha,beta-unsaturated ketone
  • Cyclic alcohol
  • Alpha-hydroxy ketone
  • Enone
  • Tertiary alcohol
  • Secondary alcohol
  • Carboxylic acid ester
  • Ketone
  • Carboxylic acid derivative
  • Monocarboxylic acid or derivatives
  • Organic oxide
  • Carbonyl group
  • Primary alcohol
  • Alcohol
  • Organic oxygen compound
  • Organooxygen compound
  • Hydrocarbon derivative
  • Aliphatic homopolycyclic compound
Molecular FrameworkAliphatic homopolycyclic 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
logP3.19ALOGPS
logP2.16ChemAxon
logS-4.7ALOGPS
pKa (Strongest Acidic)12.94ChemAxon
pKa (Strongest Basic)-0.87ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count7ChemAxon
Hydrogen Donor Count4ChemAxon
Polar Surface Area141.36 ŲChemAxon
Rotatable Bond Count7ChemAxon
Refractivity152.15 m³·mol⁻¹ChemAxon
Polarizability62.02 ųChemAxon
Number of Rings4ChemAxon
BioavailabilityYesChemAxon
Rule of FiveNoChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleYesChemAxon
HMDB IDHMDB0034706
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FoodDB IDFDB013239
KNApSAcK IDC00003684
Chemspider ID4730532
KEGG Compound IDC08795
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound5874476
PDB IDNot Available
ChEBI IDNot Available
Good Scents IDNot Available
References
General References