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Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2017-08-01 02:16:03 UTC
Update Date2022-03-07 03:18:00 UTC
HMDB IDHMDB0094673
Secondary Accession Numbers
  • HMDB94673
Metabolite Identification
Common NameCyclo(Leu-Phe)
DescriptionCyclo(leu-phe), also known as cyclo(Phe-leu) or cFL, is classified as an alpha amino acid or an Alpha amino acid derivative. Alpha amino acids are amino acids in which the amino group is attached to the carbon atom immediately adjacent to the carboxylate group (alpha carbon), or a derivative thereof. Cyclo(leu-phe) is considered to be a practically insoluble (in water) and a moderately acidic compound. Cyclo(leu-phe) can be found in feces.
Structure
Data?1563871215
Synonyms
ValueSource
(3S,6S)-3-(2-Methylpropyl)-6-(phenylmethyl)-2,5-piperazinedioneChEBI
cFLChEBI
Cyclo(L-leu-L-phe)ChEBI
Cyclo(L-leucyl-L-phenylalanyl)ChEBI
Cyclo(L-phe-L-leu)ChEBI
Cyclo(leu-phe)ChEBI
Cyclo(phe-leu)ChEBI
L-Phenylalanyl-L-leucine diketopiperazineChEBI
(3S,6S)-3-Benzyl-6-(2-methylpropyl)piperazine-2,5-dioneKegg
cyclo(Leucyl-phenylalanyl)MeSH, HMDB
Chemical FormulaC15H20N2O2
Average Molecular Weight260.337
Monoisotopic Molecular Weight260.152477892
IUPAC Name(3S,6S)-3-benzyl-6-(2-methylpropyl)-3,6-dihydropyrazine-2,5-diol
Traditional Name(3S,6S)-3-benzyl-6-(2-methylpropyl)-3,6-dihydropyrazine-2,5-diol
CAS Registry NumberNot Available
SMILES
[H][C@@]1(CC(C)C)N=C(O)[C@]([H])(CC2=CC=CC=C2)N=C1O
InChI Identifier
InChI=1S/C15H20N2O2/c1-10(2)8-12-14(18)17-13(15(19)16-12)9-11-6-4-3-5-7-11/h3-7,10,12-13H,8-9H2,1-2H3,(H,16,19)(H,17,18)/t12-,13-/m0/s1
InChI KeyQPDMOMIYLJMOQJ-STQMWFEESA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as alpha amino acids and derivatives. These are amino acids in which the amino group is attached to the carbon atom immediately adjacent to the carboxylate group (alpha carbon), or a derivative thereof.
KingdomOrganic compounds
Super ClassOrganic acids and derivatives
ClassCarboxylic acids and derivatives
Sub ClassAmino acids, peptides, and analogues
Direct ParentAlpha amino acids and derivatives
Alternative Parents
Substituents
  • Alpha-amino acid or derivatives
  • Dioxopiperazine
  • 2,5-dioxopiperazine
  • Monocyclic benzene moiety
  • 1,4-diazinane
  • Piperazine
  • Benzenoid
  • Secondary carboxylic acid amide
  • Lactam
  • Carboxamide group
  • Organoheterocyclic compound
  • Azacycle
  • Organopnictogen compound
  • Carbonyl group
  • Organic nitrogen compound
  • Organooxygen compound
  • Organonitrogen compound
  • Organic oxygen compound
  • Hydrocarbon derivative
  • Organic oxide
  • Aromatic heteromonocyclic compound
Molecular FrameworkAromatic heteromonocyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
RoleNot Available
Physical Properties
StateNot Available
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
logP2.36ALOGPS
logP1.76ChemAxon
logS-3.4ALOGPS
pKa (Strongest Acidic)2.71ChemAxon
pKa (Strongest Basic)4.68ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area65.18 ŲChemAxon
Rotatable Bond Count4ChemAxon
Refractivity73.93 m³·mol⁻¹ChemAxon
Polarizability28.75 ųChemAxon
Number of Rings2ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DarkChem[M+H]+162.91831661259
DarkChem[M-H]-162.36631661259
DeepCCS[M+H]+159.38330932474
DeepCCS[M-H]-157.02530932474
DeepCCS[M-2H]-190.8730932474
DeepCCS[M+Na]+166.00330932474
AllCCS[M+H]+163.232859911
AllCCS[M+H-H2O]+159.632859911
AllCCS[M+NH4]+166.532859911
AllCCS[M+Na]+167.532859911
AllCCS[M-H]-166.132859911
AllCCS[M+Na-2H]-166.332859911
AllCCS[M+HCOO]-166.632859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
Cyclo(Leu-Phe)[H][C@@]1(CC(C)C)N=C(O)[C@]([H])(CC2=CC=CC=C2)N=C1O2963.9Standard polar33892256
Cyclo(Leu-Phe)[H][C@@]1(CC(C)C)N=C(O)[C@]([H])(CC2=CC=CC=C2)N=C1O2099.2Standard non polar33892256
Cyclo(Leu-Phe)[H][C@@]1(CC(C)C)N=C(O)[C@]([H])(CC2=CC=CC=C2)N=C1O2084.6Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
Cyclo(Leu-Phe),1TMS,isomer #1CC(C)C[C@@H]1N=C(O[Si](C)(C)C)[C@H](CC2=CC=CC=C2)N=C1O2052.9Semi standard non polar33892256
Cyclo(Leu-Phe),1TMS,isomer #2CC(C)C[C@@H]1N=C(O)[C@H](CC2=CC=CC=C2)N=C1O[Si](C)(C)C2076.8Semi standard non polar33892256
Cyclo(Leu-Phe),2TMS,isomer #1CC(C)C[C@@H]1N=C(O[Si](C)(C)C)[C@H](CC2=CC=CC=C2)N=C1O[Si](C)(C)C2129.9Semi standard non polar33892256
Cyclo(Leu-Phe),1TBDMS,isomer #1CC(C)C[C@@H]1N=C(O[Si](C)(C)C(C)(C)C)[C@H](CC2=CC=CC=C2)N=C1O2255.1Semi standard non polar33892256
Cyclo(Leu-Phe),1TBDMS,isomer #2CC(C)C[C@@H]1N=C(O)[C@H](CC2=CC=CC=C2)N=C1O[Si](C)(C)C(C)(C)C2264.8Semi standard non polar33892256
Cyclo(Leu-Phe),2TBDMS,isomer #1CC(C)C[C@@H]1N=C(O[Si](C)(C)C(C)(C)C)[C@H](CC2=CC=CC=C2)N=C1O[Si](C)(C)C(C)(C)C2517.9Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - Cyclo(Leu-Phe) GC-MS (Non-derivatized) - 70eV, Positivesplash10-0007-9640000000-609ba4c52300440a234d2017-09-14Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Cyclo(Leu-Phe) GC-MS (2 TMS) - 70eV, Positivesplash10-000f-9327000000-bec89ae75ba379a7ea852017-10-06Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Cyclo(Leu-Phe) GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cyclo(Leu-Phe) 10V, Negative-QTOFsplash10-0aor-0090000000-b6e391a32751e95265522017-09-14Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cyclo(Leu-Phe) 20V, Negative-QTOFsplash10-00l6-9410000000-9679f2e8b6ca50c8a1aa2017-09-14Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cyclo(Leu-Phe) 40V, Negative-QTOFsplash10-0frx-9400000000-0f2097d0e4a2f274f4f42017-09-14Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cyclo(Leu-Phe) 10V, Positive-QTOFsplash10-03di-0090000000-174424947d50accea5852017-09-21Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cyclo(Leu-Phe) 20V, Positive-QTOFsplash10-03dl-4390000000-77c611261efe12aab5202017-09-21Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cyclo(Leu-Phe) 40V, Positive-QTOFsplash10-052f-9200000000-c5231f4b533d04fab5af2017-09-21Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cyclo(Leu-Phe) 10V, Positive-QTOFsplash10-03di-0090000000-a8510df7876ad10d1e912021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cyclo(Leu-Phe) 20V, Positive-QTOFsplash10-03xu-1390000000-16ca9b59a6f7b443444b2021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cyclo(Leu-Phe) 40V, Positive-QTOFsplash10-0006-9410000000-c35891b7cf45708017dc2021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cyclo(Leu-Phe) 10V, Negative-QTOFsplash10-0a4i-0090000000-a7fd50b20d0fcccddc5f2021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cyclo(Leu-Phe) 20V, Negative-QTOFsplash10-052f-5390000000-c81968f90f3566dfcd8f2021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cyclo(Leu-Phe) 40V, Negative-QTOFsplash10-0006-9310000000-e50ec5c1775767a23bef2021-09-24Wishart LabView Spectrum
Biological Properties
Cellular LocationsNot Available
Biospecimen Locations
  • Feces
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
Abnormal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Colorectal cancer
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothColorectal Cancer details
Associated Disorders and Diseases
Disease References
Colorectal cancer
  1. Brown DG, Rao S, Weir TL, O'Malia J, Bazan M, Brown RJ, Ryan EP: Metabolomics and metabolic pathway networks from human colorectal cancers, adjacent mucosa, and stool. Cancer Metab. 2016 Jun 6;4:11. doi: 10.1186/s40170-016-0151-y. eCollection 2016. [PubMed:27275383 ]
  2. Goedert JJ, Sampson JN, Moore SC, Xiao Q, Xiong X, Hayes RB, Ahn J, Shi J, Sinha R: Fecal metabolomics: assay performance and association with colorectal cancer. Carcinogenesis. 2014 Sep;35(9):2089-96. doi: 10.1093/carcin/bgu131. Epub 2014 Jul 18. [PubMed:25037050 ]
Associated OMIM IDs
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDNot Available
KNApSAcK IDNot Available
Chemspider IDNot Available
KEGG Compound IDC20519
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound7076347
PDB IDNot Available
ChEBI ID71608
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General ReferencesNot Available