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Record Information
Version2.0
Created at2022-09-09 21:16:50 UTC
Updated at2022-09-09 21:16:50 UTC
NP-MRD IDNP0290545
Secondary Accession NumbersNone
Natural Product Identification
Common Name(2s)-2-amino-4-(ethyl-c-hydroxycarbonimidoyl)butanoic acid
DescriptionL-Theanine, also known as suntheanine, belongs to the class of organic compounds known as glutamine and derivatives. Glutamine and derivatives are compounds containing glutamine or a derivative thereof resulting from reaction of glutamine at the amino group or the carboxy group, or from the replacement of any hydrogen of glycine by a heteroatom. L-Theanine is a very strong basic compound (based on its pKa). L-Theanine exists in all living organisms, ranging from bacteria to humans. (2s)-2-amino-4-(ethyl-c-hydroxycarbonimidoyl)butanoic acid is found in Camellia japonica, Camellia sinensis, Homo sapiens and Trypanosoma brucei. (2s)-2-amino-4-(ethyl-c-hydroxycarbonimidoyl)butanoic acid was first documented in 2010 (PMID: 20416364). Theanine is under investigation in clinical trial NCT00291070 (Effects of L-Theanine in Boys With ADHD) (PMID: 23096008) (PMID: 23097345) (PMID: 23395732) (PMID: 24304633).
Structure
Thumb
Synonyms
ValueSource
N5-Ethyl-L-glutamineChEBI
gamma-GlutamylethylamideHMDB
Theanine, (D)-isomerHMDB
L-Glutamic acid-gamma-ethylamideHMDB
Theanine, (DL)-isomerHMDB
delta-GlutamylethylamideHMDB
Theanine, (L)-isomerHMDB
(+)-TheanineHMDB
L-gamma-GlutamylethylamideHMDB
L-Γ-glutamylethylamideHMDB
N-gamma-Ethyl-L-glutamineHMDB
N-Γ-ethyl-L-glutamineHMDB
Nγ-ethyl-L-glutamineHMDB
SuntheanineHMDB
TheaninHMDB
N(5)-Ethyl-L-glutamineHMDB
TheanineHMDB
L-TheanineChEBI
Chemical FormulaC7H14N2O3
Average Mass174.1977 Da
Monoisotopic Mass174.10044 Da
IUPAC Name(2S)-2-amino-4-(ethylcarbamoyl)butanoic acid
Traditional Nametheanine
CAS Registry NumberNot Available
SMILES
[H][C@](N)(CCC(O)=NCC)C(O)=O
InChI Identifier
InChI=1S/C7H14N2O3/c1-2-9-6(10)4-3-5(8)7(11)12/h5H,2-4,8H2,1H3,(H,9,10)(H,11,12)/t5-/m0/s1
InChI KeyDATAGRPVKZEWHA-YFKPBYRVSA-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
Camellia japonicaLOTUS Database
Camellia sinensisLOTUS Database
Homo sapiensLOTUS Database
Trypanosoma bruceiLOTUS Database
Chemical Taxonomy
Description Belongs to the class of organic compounds known as glutamine and derivatives. Glutamine and derivatives are compounds containing glutamine or a derivative thereof resulting from reaction of glutamine at the amino group or the carboxy group, or from the replacement of any hydrogen of glycine by a heteroatom.
KingdomOrganic compounds
Super ClassOrganic acids and derivatives
ClassCarboxylic acids and derivatives
Sub ClassAmino acids, peptides, and analogues
Direct ParentGlutamine and derivatives
Alternative Parents
Substituents
  • Glutamine or derivatives
  • Alpha-amino acid
  • L-alpha-amino acid
  • Fatty amide
  • N-acyl-amine
  • Fatty acid
  • Fatty acyl
  • Carboxamide group
  • Secondary carboxylic acid amide
  • Amino acid
  • Monocarboxylic acid or derivatives
  • Carboxylic acid
  • Organic nitrogen compound
  • Primary amine
  • Organooxygen compound
  • Organonitrogen compound
  • Organopnictogen compound
  • Primary aliphatic amine
  • Organic oxygen compound
  • Carbonyl group
  • Organic oxide
  • Amine
  • Hydrocarbon derivative
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
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
logP-2.5ALOGPS
logP-3.4ChemAxon
logS-1.6ALOGPS
pKa (Strongest Acidic)2.35ChemAxon
pKa (Strongest Basic)9.31ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area92.42 ŲChemAxon
Rotatable Bond Count5ChemAxon
Refractivity42.76 m³·mol⁻¹ChemAxon
Polarizability17.89 ųChemAxon
Number of Rings0ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
HMDB IDHMDB0034365
DrugBank IDDB12444
Phenol Explorer Compound IDNot Available
FoodDB IDFDB012738
KNApSAcK IDC00030691
Chemspider ID388498
KEGG Compound IDC01047
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkL-theanine
METLIN IDNot Available
PubChem Compound439378
PDB IDNot Available
ChEBI ID17394
Good Scents IDNot Available
References
General References
  1. Di X, Yan J, Zhao Y, Zhang J, Shi Z, Chang Y, Zhao B: L-theanine protects the APP (Swedish mutation) transgenic SH-SY5Y cell against glutamate-induced excitotoxicity via inhibition of the NMDA receptor pathway. Neuroscience. 2010 Jul 14;168(3):778-86. doi: 10.1016/j.neuroscience.2010.04.019. Epub 2010 Apr 21. [PubMed:20416364 ]
  2. Scheid L, Ellinger S, Alteheld B, Herholz H, Ellinger J, Henn T, Helfrich HP, Stehle P: Kinetics of L-theanine uptake and metabolism in healthy participants are comparable after ingestion of L-theanine via capsules and green tea. J Nutr. 2012 Dec;142(12):2091-6. doi: 10.3945/jn.112.166371. Epub 2012 Oct 24. [PubMed:23096008 ]
  3. Zukhurova M, Prosvirnina M, Daineko A, Simanenkova A, Petrishchev N, Sonin D, Galagudza M, Shamtsyan M, Juneja LR, Vlasov T: L-theanine administration results in neuroprotection and prevents glutamate receptor agonist-mediated injury in the rat model of cerebral ischemia-reperfusion. Phytother Res. 2013 Sep;27(9):1282-7. doi: 10.1002/ptr.4868. Epub 2012 Oct 24. [PubMed:23097345 ]
  4. Tian X, Sun L, Gou L, Ling X, Feng Y, Wang L, Yin X, Liu Y: Protective effect of l-theanine on chronic restraint stress-induced cognitive impairments in mice. Brain Res. 2013 Mar 29;1503:24-32. doi: 10.1016/j.brainres.2013.01.048. Epub 2013 Feb 5. [PubMed:23395732 ]
  5. Ross SM: L-theanine (suntheanin): effects of L-theanine, an amino acid derived from Camellia sinensis (green tea), on stress response parameters. Holist Nurs Pract. 2014 Jan-Feb;28(1):65-8. doi: 10.1097/HNP.0000000000000009. [PubMed:24304633 ]
  6. LOTUS database [Link]