NP-MRD: Showing NP-Card for (2r)-2-[(4ar,8s,8ar)-8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl]propanoic acid (NP0171391)

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Record Information

Version

2.0

Created at

2022-09-03 07:53:26 UTC

Updated at

2022-09-03 07:53:26 UTC

NP-MRD ID

NP0171391

Secondary Accession Numbers

None

Natural Product Identification

Common Name

(2r)-2-[(4ar,8s,8ar)-8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl]propanoic acid

Description

(R)-2-(2-Oxo-4abeta,5beta-dimethyl-1,2,4a,5,6,7,8,8abeta-octahydronaphthalene-3-yl)propanoic acid belongs to the class of organic compounds known as eremophilane, 8,9-secoeremophilane and furoeremophilane sesquiterpenoids. These are sesquiterpenoids with a structure based either on the eremophilane skeleton, its 8,9-seco derivative, or the furoeremophilane skeleton. Eremophilanes have been shown to be derived from eudesmanes by migration of the methyl group at C-10 to C-5. (2r)-2-[(4ar,8s,8ar)-8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl]propanoic acid is found in Ligularia kanaitzensis, Ligularia subspicata, Ligularia virgaurea and Petasites japonicus. Based on a literature review very few articles have been published on (R)-2-(2-Oxo-4abeta,5beta-dimethyl-1,2,4a,5,6,7,8,8abeta-octahydronaphthalene-3-yl)propanoic acid.

Structure

MOL 3D MOL SDF PDB SMILES InChI

     RDKit          3D

 40 41  0  0  0  0  0  0  0  0999 V2000
   -2.8937   -1.2540    0.7367 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.6894   -1.1909   -0.1734 C   0  0  1  0  0  0  0  0  0  0  0  0
   -2.1217   -0.7577   -1.5307 C   0  0  0  0  0  0  0  0  0  0  0  0
   -2.7327    0.6213   -1.4088 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.6485    1.5612   -0.9439 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.0628    1.1574    0.3863 C   0  0  2  0  0  0  0  0  0  0  0  0
    0.0134    2.1192    0.7392 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.3748    1.5252    0.8376 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.2734    2.0808    1.5603 O   0  0  0  0  0  0  0  0  0  0  0  0
    1.6534    0.3077    0.0972 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.0364    0.0950   -0.4178 C   0  0  1  0  0  0  0  0  0  0  0  0
    3.9455    0.0948    0.7917 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.1893   -1.1650   -1.1335 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.9839   -2.0349   -0.7111 O   0  0  0  0  0  0  0  0  0  0  0  0
    2.4793   -1.4522   -2.2873 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.6804   -0.5485   -0.0789 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.6754   -0.2796    0.4589 C   0  0  2  0  0  0  0  0  0  0  0  0
   -0.6392   -0.6631    1.9436 C   0  0  0  0  0  0  0  0  0  0  0  0
   -3.2325   -0.2401    1.0270 H   0  0  0  0  0  0  0  0  0  0  0  0
   -3.7424   -1.7313    0.1722 H   0  0  0  0  0  0  0  0  0  0  0  0
   -2.7214   -1.9201    1.6084 H   0  0  0  0  0  0  0  0  0  0  0  0
   -1.2555   -2.2102   -0.2427 H   0  0  0  0  0  0  0  0  0  0  0  0
   -2.9494   -1.4350   -1.8516 H   0  0  0  0  0  0  0  0  0  0  0  0
   -1.3141   -0.7247   -2.2742 H   0  0  0  0  0  0  0  0  0  0  0  0
   -3.0308    0.9534   -2.4242 H   0  0  0  0  0  0  0  0  0  0  0  0
   -3.6229    0.6160   -0.7824 H   0  0  0  0  0  0  0  0  0  0  0  0
   -2.1140    2.5598   -0.8103 H   0  0  0  0  0  0  0  0  0  0  0  0
   -0.8991    1.6364   -1.7361 H   0  0  0  0  0  0  0  0  0  0  0  0
   -1.9033    1.3025    1.1301 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.1175    2.9305   -0.0410 H   0  0  0  0  0  0  0  0  0  0  0  0
   -0.2254    2.6862    1.6884 H   0  0  0  0  0  0  0  0  0  0  0  0
    3.3647    0.9805   -1.0317 H   0  0  0  0  0  0  0  0  0  0  0  0
    4.8175   -0.5851    0.6534 H   0  0  0  0  0  0  0  0  0  0  0  0
    4.3712    1.0989    0.9952 H   0  0  0  0  0  0  0  0  0  0  0  0
    3.3817   -0.3040    1.6746 H   0  0  0  0  0  0  0  0  0  0  0  0
    2.7354   -2.2104   -2.9121 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.8477   -1.4543   -0.6128 H   0  0  0  0  0  0  0  0  0  0  0  0
   -0.7270   -1.7537    2.0769 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.3555   -0.3290    2.3527 H   0  0  0  0  0  0  0  0  0  0  0  0
   -1.4199   -0.0833    2.4744 H   0  0  0  0  0  0  0  0  0  0  0  0
 12 11  1  0
 11 13  1  0
 13 15  1  0
 13 14  2  0
 11 10  1  0
 10 16  2  0
 16 17  1  0
 17 18  1  1
 17  2  1  0
  2  1  1  0
  2  3  1  0
  3  4  1  0
  4  5  1  0
  5  6  1  0
  6  7  1  0
  7  8  1  0
  8  9  2  0
  8 10  1  0
  6 17  1  0
 12 33  1  0
 12 34  1  0
 12 35  1  0
 11 32  1  6
 15 36  1  0
 16 37  1  0
 18 38  1  0
 18 39  1  0
 18 40  1  0
  2 22  1  6
  1 19  1  0
  1 20  1  0
  1 21  1  0
  3 23  1  0
  3 24  1  0
  4 25  1  0
  4 26  1  0
  5 27  1  0
  5 28  1  0
  6 29  1  1
  7 30  1  0
  7 31  1  0
M  END


  Mrv1652309032209532D          

 18 19  0  0  1  0            999 V2000
    1.4289   -2.4750    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.4289   -1.6500    0.0000 C   0  0  1  0  0  0  0  0  0  0  0  0
    0.7145   -1.2375    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.7145   -0.4125    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.4289    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.1434   -0.4125    0.0000 C   0  0  2  0  0  0  0  0  0  0  0  0
    2.8579    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.5724   -0.4125    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.2868   -0.0000    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    3.5724   -1.2375    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.2868   -1.6500    0.0000 C   0  0  1  0  0  0  0  0  0  0  0  0
    5.0013   -1.2375    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.2868   -2.4750    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.0013   -2.8875    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    3.5724   -2.8875    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    2.8579   -1.6500    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.1434   -1.2375    0.0000 C   0  0  2  0  0  0  0  0  0  0  0  0
    2.1434   -2.0625    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
  2  1  1  1  0  0  0
  2  3  1  0  0  0  0
  3  4  1  0  0  0  0
  4  5  1  0  0  0  0
  6  5  1  6  0  0  0
  6  7  1  0  0  0  0
  7  8  1  0  0  0  0
  8  9  2  0  0  0  0
  8 10  1  0  0  0  0
 10 11  1  0  0  0  0
 11 12  1  1  0  0  0
 11 13  1  0  0  0  0
 13 14  2  0  0  0  0
 13 15  1  0  0  0  0
 10 16  2  0  0  0  0
 16 17  1  0  0  0  0
  2 17  1  0  0  0  0
  6 17  1  0  0  0  0
 17 18  1  1  0  0  0
M  END
> <DATABASE_ID>
NP0171391

> <DATABASE_NAME>
NP-MRD

> <SMILES>
C[C@@H](C(O)=O)C1=C[C@]2(C)[C@@H](C)CCC[C@@H]2CC1=O

> <INCHI_IDENTIFIER>
InChI=1S/C15H22O3/c1-9-5-4-6-11-7-13(16)12(8-15(9,11)3)10(2)14(17)18/h8-11H,4-7H2,1-3H3,(H,17,18)/t9-,10+,11+,15+/m0/s1

> <INCHI_KEY>
HGWXWGKXIKVBKD-MYQWFSQQSA-N

> <FORMULA>
C15H22O3

> <MOLECULAR_WEIGHT>
250.338

> <EXACT_MASS>
250.156894568

> <JCHEM_ACCEPTOR_COUNT>
3

> <JCHEM_ATOM_COUNT>
40

> <JCHEM_AVERAGE_POLARIZABILITY>
27.669734431460064

> <JCHEM_BIOAVAILABILITY>
1

> <JCHEM_DONOR_COUNT>
1

> <JCHEM_FORMAL_CHARGE>
0

> <JCHEM_GHOSE_FILTER>
1

> <JCHEM_IUPAC>
(2R)-2-[(4aR,8S,8aR)-8,8a-dimethyl-3-oxo-3,4,4a,5,6,7,8,8a-octahydronaphthalen-2-yl]propanoic acid

> <ALOGPS_LOGP>
3.35

> <JCHEM_LOGP>
3.1353972583333327

> <ALOGPS_LOGS>
-3.52

> <JCHEM_MDDR_LIKE_RULE>
0

> <JCHEM_NUMBER_OF_RINGS>
2

> <JCHEM_PHYSIOLOGICAL_CHARGE>
-1

> <JCHEM_PKA_STRONGEST_ACIDIC>
4.61967158507956

> <JCHEM_PKA_STRONGEST_BASIC>
-5.8082898875543325

> <JCHEM_POLAR_SURFACE_AREA>
54.370000000000005

> <JCHEM_REFRACTIVITY>
70.0594

> <JCHEM_ROTATABLE_BOND_COUNT>
2

> <JCHEM_RULE_OF_FIVE>
1

> <ALOGPS_SOLUBILITY>
7.55e-02 g/l

> <JCHEM_TRADITIONAL_IUPAC>
(2R)-2-[(4aR,8S,8aR)-8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl]propanoic acid

> <JCHEM_VEBER_RULE>
0

$$$$

HEADER    PROTEIN                                 03-SEP-22   NONE
TITLE     NULL                                                        
COMPND    NULL                                                        
SOURCE    NULL                                                        
KEYWDS    NULL                                                        
EXPDTA    NULL                                                        
AUTHOR    Marvin                                                      
REVDAT   1   03-SEP-22         0                                  
HETATM    1  C   UNK     0       2.667  -4.620   0.000  0.00  0.00           C+0
HETATM    2  C   UNK     0       2.667  -3.080   0.000  0.00  0.00           C+0
HETATM    3  C   UNK     0       1.334  -2.310   0.000  0.00  0.00           C+0
HETATM    4  C   UNK     0       1.334  -0.770   0.000  0.00  0.00           C+0
HETATM    5  C   UNK     0       2.667   0.000   0.000  0.00  0.00           C+0
HETATM    6  C   UNK     0       4.001  -0.770   0.000  0.00  0.00           C+0
HETATM    7  C   UNK     0       5.335   0.000   0.000  0.00  0.00           C+0
HETATM    8  C   UNK     0       6.668  -0.770   0.000  0.00  0.00           C+0
HETATM    9  O   UNK     0       8.002  -0.000   0.000  0.00  0.00           O+0
HETATM   10  C   UNK     0       6.668  -2.310   0.000  0.00  0.00           C+0
HETATM   11  C   UNK     0       8.002  -3.080   0.000  0.00  0.00           C+0
HETATM   12  C   UNK     0       9.336  -2.310   0.000  0.00  0.00           C+0
HETATM   13  C   UNK     0       8.002  -4.620   0.000  0.00  0.00           C+0
HETATM   14  O   UNK     0       9.336  -5.390   0.000  0.00  0.00           O+0
HETATM   15  O   UNK     0       6.668  -5.390   0.000  0.00  0.00           O+0
HETATM   16  C   UNK     0       5.335  -3.080   0.000  0.00  0.00           C+0
HETATM   17  C   UNK     0       4.001  -2.310   0.000  0.00  0.00           C+0
HETATM   18  C   UNK     0       4.001  -3.850   0.000  0.00  0.00           C+0
CONECT    1    2                                                            
CONECT    2    1    3   17                                                  
CONECT    3    2    4                                                       
CONECT    4    3    5                                                       
CONECT    5    4    6                                                       
CONECT    6    5    7   17                                                  
CONECT    7    6    8                                                       
CONECT    8    7    9   10                                                  
CONECT    9    8                                                            
CONECT   10    8   11   16                                                  
CONECT   11   10   12   13                                                  
CONECT   12   11                                                            
CONECT   13   11   14   15                                                  
CONECT   14   13                                                            
CONECT   15   13                                                            
CONECT   16   10   17                                                       
CONECT   17   16    2    6   18                                             
CONECT   18   17                                                            
MASTER        0    0    0    0    0    0    0    0   18    0   38    0
END

View in JSmol

Synonyms

Value	Source
(R)-2-(2-oxo-4Abeta,5b-dimethyl-1,2,4a,5,6,7,8,8abeta-octahydronaphthalene-3-yl)propanoate	Generator
(R)-2-(2-oxo-4Abeta,5b-dimethyl-1,2,4a,5,6,7,8,8abeta-octahydronaphthalene-3-yl)propanoic acid	Generator
(R)-2-(2-oxo-4Abeta,5beta-dimethyl-1,2,4a,5,6,7,8,8abeta-octahydronaphthalene-3-yl)propanoate	Generator
(R)-2-(2-oxo-4Abeta,5β-dimethyl-1,2,4a,5,6,7,8,8abeta-octahydronaphthalene-3-yl)propanoate	Generator
(R)-2-(2-oxo-4Abeta,5β-dimethyl-1,2,4a,5,6,7,8,8abeta-octahydronaphthalene-3-yl)propanoic acid	Generator

Chemical Formula

C₁₅H₂₂O₃

Average Mass

250.3380 Da

Monoisotopic Mass

250.15689 Da

IUPAC Name

Not Available

Traditional Name

Not Available

CAS Registry Number

Not Available

SMILES

C[C@@H](C(O)=O)C1=C[C@]2(C)[C@@H](C)CCC[C@@H]2CC1=O

InChI Identifier

InChI=1S/C15H22O3/c1-9-5-4-6-11-7-13(16)12(8-15(9,11)3)10(2)14(17)18/h8-11H,4-7H2,1-3H3,(H,17,18)/t9-,10+,11+,15+/m0/s1

InChI Key

HGWXWGKXIKVBKD-MYQWFSQQSA-N

Experimental Spectra

Not Available

Predicted Spectra

Spectrum Type	Description	Depositor ID	Depositor Organization	Depositor	Deposition Date	View
1D NMR	¹³C NMR Spectrum (1D, 25 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 100 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 252 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 1000 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 50 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 200 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 75 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 300 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 101 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 400 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 126 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 500 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 151 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 600 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 176 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 700 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 201 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 800 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 226 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 900 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum

Chemical Shift Submissions

Not Available

Species

Species of Origin

Species Name	Source	Reference
Ligularia kanaitzensis	LOTUS Database	35616633
Ligularia subspicata	LOTUS Database	35616633
Ligularia virgaurea	LOTUS Database	35616633
Petasites japonicus	LOTUS Database	35616633

Chemical Taxonomy

Description

Belongs to the class of organic compounds known as eremophilane, 8,9-secoeremophilane and furoeremophilane sesquiterpenoids. These are sesquiterpenoids with a structure based either on the eremophilane skeleton, its 8,9-seco derivative, or the furoeremophilane skeleton. Eremophilanes have been shown to be derived from eudesmanes by migration of the methyl group at C-10 to C-5.

Kingdom

Organic compounds

Super Class

Lipids and lipid-like molecules

Class

Prenol lipids

Sub Class

Sesquiterpenoids

Direct Parent

Eremophilane, 8,9-secoeremophilane and furoeremophilane sesquiterpenoids

Alternative Parents

Substituents

Eremophilane sesquiterpenoid
Cyclohexenone
Cyclic ketone
Ketone
Monocarboxylic acid or derivatives
Carboxylic acid
Carboxylic acid derivative
Organic oxygen compound
Organic oxide
Hydrocarbon derivative
Organooxygen compound
Carbonyl group
Aliphatic homopolycyclic compound

Molecular Framework

Aliphatic homopolycyclic compounds

External Descriptors

Not Available

Physical Properties

State

Not Available

Experimental Properties

Property	Value	Reference
Melting Point	Not Available	Not Available
Boiling Point	Not Available	Not Available
Water Solubility	Not Available	Not Available
LogP	Not Available	Not Available

Predicted Properties

Property	Value	Source

External Links

HMDB ID

Not Available

DrugBank ID

Not Available

Phenol Explorer Compound ID

Not Available

FoodDB ID

Not Available

KNApSAcK ID

Not Available

Chemspider ID

Not Available

KEGG Compound ID

Not Available

BioCyc ID

Not Available

BiGG ID

Not Available

Wikipedia Link

Not Available

METLIN ID

Not Available

PubChem Compound

122402090

PDB ID

Not Available

ChEBI ID

Not Available

Good Scents ID

Not Available

References

General References

LOTUS database [Link]

Showing NP-Card for (2r)-2-[(4ar,8s,8ar)-8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl]propanoic acid (NP0171391)

MOL for NP0171391 ((2r)-2-[(4ar,8s,8ar)-8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl]propanoic acid)

3D MOL for NP0171391 ((2r)-2-[(4ar,8s,8ar)-8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl]propanoic acid)

3D SDF for NP0171391 ((2r)-2-[(4ar,8s,8ar)-8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl]propanoic acid)

3D-SDF for NP0171391 ((2r)-2-[(4ar,8s,8ar)-8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl]propanoic acid)

PDB for NP0171391 ((2r)-2-[(4ar,8s,8ar)-8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl]propanoic acid)

3D PDB for NP0171391 ((2r)-2-[(4ar,8s,8ar)-8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl]propanoic acid)

SMILES for NP0171391 ((2r)-2-[(4ar,8s,8ar)-8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl]propanoic acid)

INCHI for NP0171391 ((2r)-2-[(4ar,8s,8ar)-8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl]propanoic acid)

Structure for NP0171391 ((2r)-2-[(4ar,8s,8ar)-8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl]propanoic acid)

3D Structure for NP0171391 ((2r)-2-[(4ar,8s,8ar)-8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl]propanoic acid)