NP-MRD: Showing NP-Card for 7-hydroxy-1-[1-(3-hydroxy-5-methylpyridin-2-yl)ethyl]-9a,11a-dimethyl-tetradecahydrocyclopenta[a]phenanthren-5-one (NP0220742)

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Record Information

Version

2.0

Created at

2022-09-05 22:08:32 UTC

Updated at

2022-09-05 22:08:32 UTC

NP-MRD ID

NP0220742

Secondary Accession Numbers

None

Natural Product Identification

Common Name

7-hydroxy-1-[1-(3-hydroxy-5-methylpyridin-2-yl)ethyl]-9a,11a-dimethyl-tetradecahydrocyclopenta[a]phenanthren-5-one

Description

5-Hydroxy-14-[1-(3-hydroxy-5-methylpyridin-2-yl)ethyl]-2,15-dimethyltetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]Heptadecan-8-one belongs to the class of organic compounds known as gluco/mineralocorticoids, progestogins and derivatives. These are steroids with a structure based on a hydroxylated prostane moiety. 7-hydroxy-1-[1-(3-hydroxy-5-methylpyridin-2-yl)ethyl]-9a,11a-dimethyl-tetradecahydrocyclopenta[a]phenanthren-5-one is found in Fritillaria imperialis and Fritillaria raddeana. 5-Hydroxy-14-[1-(3-hydroxy-5-methylpyridin-2-yl)ethyl]-2,15-dimethyltetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]Heptadecan-8-one is a very strong basic compound (based on its pKa).

Structure

MOL SDF PDB SMILES InChI


  Mrv1533004161504082D          

 31 35  0  0  0  0            999 V2000
    2.8728   -3.9050    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.5619   -3.1408    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.0683   -2.4895    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.8390   -1.6970    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.5218   -1.2340    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.1731   -1.7404    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.9853   -1.5952    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.2655   -0.8192    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    6.0777   -0.6740    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    6.3580    0.1019    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    6.6095   -1.3047    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    7.4216   -1.1595    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    7.9534   -1.7902    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    8.7655   -1.6450    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    7.6731   -2.5662    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    6.8610   -2.7114    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    6.3292   -2.0807    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    6.0489   -2.8566    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.5171   -2.2259    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.2368   -3.0018    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.4247   -3.1470    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.8928   -2.5163    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.5330   -3.2587    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.7447   -3.0280    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.2383   -3.6793    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0
    0.4211   -3.5665    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.1102   -2.8023    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.7071   -2.6894    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.6165   -2.1509    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.4338   -2.2638    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.9401   -1.6125    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  1  0  0  0  0
  2  3  1  0  0  0  0
  3  4  1  0  0  0  0
  4  5  1  0  0  0  0
  5  6  1  0  0  0  0
  6  7  1  0  0  0  0
  7  8  1  0  0  0  0
  8  9  1  0  0  0  0
  9 10  2  0  0  0  0
  9 11  1  0  0  0  0
 11 12  1  0  0  0  0
 12 13  1  0  0  0  0
 13 14  1  0  0  0  0
 13 15  1  0  0  0  0
 15 16  1  0  0  0  0
 16 17  1  0  0  0  0
 11 17  1  0  0  0  0
 17 18  1  0  0  0  0
 17 19  1  0  0  0  0
  7 19  1  0  0  0  0
 19 20  1  0  0  0  0
 20 21  1  0  0  0  0
 21 22  1  0  0  0  0
  3 22  1  0  0  0  0
  6 22  1  0  0  0  0
 22 23  1  0  0  0  0
  2 24  1  0  0  0  0
 24 25  2  0  0  0  0
 25 26  1  0  0  0  0
 26 27  2  0  0  0  0
 27 28  1  0  0  0  0
 27 29  1  0  0  0  0
 29 30  2  0  0  0  0
 24 30  1  0  0  0  0
 30 31  1  0  0  0  0
M  END


  Mrv1533004161504082D          

 31 35  0  0  0  0            999 V2000
    2.8728   -3.9050    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.5619   -3.1408    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.0683   -2.4895    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.8390   -1.6970    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.5218   -1.2340    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.1731   -1.7404    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.9853   -1.5952    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.2655   -0.8192    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    6.0777   -0.6740    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    6.3580    0.1019    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    6.6095   -1.3047    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    7.4216   -1.1595    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    7.9534   -1.7902    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    8.7655   -1.6450    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    7.6731   -2.5662    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    6.8610   -2.7114    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    6.3292   -2.0807    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    6.0489   -2.8566    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.5171   -2.2259    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.2368   -3.0018    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.4247   -3.1470    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.8928   -2.5163    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.5330   -3.2587    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.7447   -3.0280    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.2383   -3.6793    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0
    0.4211   -3.5665    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.1102   -2.8023    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.7071   -2.6894    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.6165   -2.1509    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.4338   -2.2638    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.9401   -1.6125    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  1  0  0  0  0
  2  3  1  0  0  0  0
  3  4  1  0  0  0  0
  4  5  1  0  0  0  0
  5  6  1  0  0  0  0
  6  7  1  0  0  0  0
  7  8  1  0  0  0  0
  8  9  1  0  0  0  0
  9 10  2  0  0  0  0
  9 11  1  0  0  0  0
 11 12  1  0  0  0  0
 12 13  1  0  0  0  0
 13 14  1  0  0  0  0
 13 15  1  0  0  0  0
 15 16  1  0  0  0  0
 16 17  1  0  0  0  0
 11 17  1  0  0  0  0
 17 18  1  0  0  0  0
 17 19  1  0  0  0  0
  7 19  1  0  0  0  0
 19 20  1  0  0  0  0
 20 21  1  0  0  0  0
 21 22  1  0  0  0  0
  3 22  1  0  0  0  0
  6 22  1  0  0  0  0
 22 23  1  0  0  0  0
  2 24  1  0  0  0  0
 24 25  2  0  0  0  0
 25 26  1  0  0  0  0
 26 27  2  0  0  0  0
 27 28  1  0  0  0  0
 27 29  1  0  0  0  0
 29 30  2  0  0  0  0
 24 30  1  0  0  0  0
 30 31  1  0  0  0  0
M  END
> <DATABASE_ID>
NP0220742

> <DATABASE_NAME>
NP-MRD

> <SMILES>
CC(C1CCC2C3CC(=O)C4CC(O)CCC4(C)C3CCC12C)C1=NC=C(C)C=C1O

> <INCHI_IDENTIFIER>
InChI=1S/C27H39NO3/c1-15-11-24(31)25(28-14-15)16(2)19-5-6-20-18-13-23(30)22-12-17(29)7-9-27(22,4)21(18)8-10-26(19,20)3/h11,14,16-22,29,31H,5-10,12-13H2,1-4H3

> <INCHI_KEY>
NMHCTUTYNGBHMC-UHFFFAOYSA-N

> <FORMULA>
C27H39NO3

> <MOLECULAR_WEIGHT>
425.613

> <EXACT_MASS>
425.29299412

> <JCHEM_ACCEPTOR_COUNT>
4

> <JCHEM_ATOM_COUNT>
70

> <JCHEM_AVERAGE_POLARIZABILITY>
49.50941086545693

> <JCHEM_BIOAVAILABILITY>
1

> <JCHEM_DONOR_COUNT>
2

> <JCHEM_FORMAL_CHARGE>
0

> <JCHEM_GHOSE_FILTER>
1

> <JCHEM_IUPAC>
5-hydroxy-14-[1-(3-hydroxy-5-methylpyridin-2-yl)ethyl]-2,15-dimethyltetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadecan-8-one

> <ALOGPS_LOGP>
4.32

> <JCHEM_LOGP>
4.785794969333331

> <ALOGPS_LOGS>
-5.05

> <JCHEM_MDDR_LIKE_RULE>
0

> <JCHEM_NUMBER_OF_RINGS>
5

> <JCHEM_PHYSIOLOGICAL_CHARGE>
0

> <JCHEM_PKA>
15.234294397728739

> <JCHEM_PKA_STRONGEST_ACIDIC>
9.857897762902425

> <JCHEM_PKA_STRONGEST_BASIC>
6.127086194637459

> <JCHEM_POLAR_SURFACE_AREA>
70.42

> <JCHEM_REFRACTIVITY>
122.04349999999998

> <JCHEM_ROTATABLE_BOND_COUNT>
2

> <JCHEM_RULE_OF_FIVE>
1

> <ALOGPS_SOLUBILITY>
3.81e-03 g/l

> <JCHEM_TRADITIONAL_IUPAC>
5-hydroxy-14-[1-(3-hydroxy-5-methylpyridin-2-yl)ethyl]-2,15-dimethyltetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadecan-8-one

> <JCHEM_VEBER_RULE>
0

$$$$

HEADER    PROTEIN                                 16-APR-15   NONE
TITLE     NULL                                                        
COMPND    NULL                                                        
SOURCE    NULL                                                        
KEYWDS    NULL                                                        
EXPDTA    NULL                                                        
AUTHOR    Marvin                                                      
REVDAT   1   16-APR-15         0                                  
HETATM    1  C   UNK     0       5.363  -7.289   0.000  0.00  0.00           C+0
HETATM    2  C   UNK     0       4.782  -5.863   0.000  0.00  0.00           C+0
HETATM    3  C   UNK     0       5.727  -4.647   0.000  0.00  0.00           C+0
HETATM    4  C   UNK     0       5.299  -3.168   0.000  0.00  0.00           C+0
HETATM    5  C   UNK     0       6.574  -2.304   0.000  0.00  0.00           C+0
HETATM    6  C   UNK     0       7.790  -3.249   0.000  0.00  0.00           C+0
HETATM    7  C   UNK     0       9.306  -2.978   0.000  0.00  0.00           C+0
HETATM    8  C   UNK     0       9.829  -1.529   0.000  0.00  0.00           C+0
HETATM    9  C   UNK     0      11.345  -1.258   0.000  0.00  0.00           C+0
HETATM   10  O   UNK     0      11.868   0.190   0.000  0.00  0.00           O+0
HETATM   11  C   UNK     0      12.338  -2.436   0.000  0.00  0.00           C+0
HETATM   12  C   UNK     0      13.854  -2.164   0.000  0.00  0.00           C+0
HETATM   13  C   UNK     0      14.846  -3.342   0.000  0.00  0.00           C+0
HETATM   14  O   UNK     0      16.362  -3.071   0.000  0.00  0.00           O+0
HETATM   15  C   UNK     0      14.323  -4.790   0.000  0.00  0.00           C+0
HETATM   16  C   UNK     0      12.807  -5.061   0.000  0.00  0.00           C+0
HETATM   17  C   UNK     0      11.814  -3.884   0.000  0.00  0.00           C+0
HETATM   18  C   UNK     0      11.291  -5.332   0.000  0.00  0.00           C+0
HETATM   19  C   UNK     0      10.299  -4.155   0.000  0.00  0.00           C+0
HETATM   20  C   UNK     0       9.775  -5.603   0.000  0.00  0.00           C+0
HETATM   21  C   UNK     0       8.259  -5.874   0.000  0.00  0.00           C+0
HETATM   22  C   UNK     0       7.267  -4.697   0.000  0.00  0.00           C+0
HETATM   23  C   UNK     0       6.595  -6.083   0.000  0.00  0.00           C+0
HETATM   24  C   UNK     0       3.257  -5.652   0.000  0.00  0.00           C+0
HETATM   25  N   UNK     0       2.312  -6.868   0.000  0.00  0.00           N+0
HETATM   26  C   UNK     0       0.786  -6.657   0.000  0.00  0.00           C+0
HETATM   27  C   UNK     0       0.206  -5.231   0.000  0.00  0.00           C+0
HETATM   28  C   UNK     0      -1.320  -5.020   0.000  0.00  0.00           C+0
HETATM   29  C   UNK     0       1.151  -4.015   0.000  0.00  0.00           C+0
HETATM   30  C   UNK     0       2.676  -4.226   0.000  0.00  0.00           C+0
HETATM   31  O   UNK     0       3.622  -3.010   0.000  0.00  0.00           O+0
CONECT    1    2                                                            
CONECT    2    1    3   24                                                  
CONECT    3    2    4   22                                                  
CONECT    4    3    5                                                       
CONECT    5    4    6                                                       
CONECT    6    5    7   22                                                  
CONECT    7    6    8   19                                                  
CONECT    8    7    9                                                       
CONECT    9    8   10   11                                                  
CONECT   10    9                                                            
CONECT   11    9   12   17                                                  
CONECT   12   11   13                                                       
CONECT   13   12   14   15                                                  
CONECT   14   13                                                            
CONECT   15   13   16                                                       
CONECT   16   15   17                                                       
CONECT   17   16   11   18   19                                             
CONECT   18   17                                                            
CONECT   19   17    7   20                                                  
CONECT   20   19   21                                                       
CONECT   21   20   22                                                       
CONECT   22   21    3    6   23                                             
CONECT   23   22                                                            
CONECT   24    2   25   30                                                  
CONECT   25   24   26                                                       
CONECT   26   25   27                                                       
CONECT   27   26   28   29                                                  
CONECT   28   27                                                            
CONECT   29   27   30                                                       
CONECT   30   29   24   31                                                  
CONECT   31   30                                                            
MASTER        0    0    0    0    0    0    0    0   31    0   70    0
END

View in JSmol

Synonyms

Not Available

Chemical Formula

C₂₇H₃₉NO₃

Average Mass

425.6130 Da

Monoisotopic Mass

425.29299 Da

IUPAC Name

5-hydroxy-14-[1-(3-hydroxy-5-methylpyridin-2-yl)ethyl]-2,15-dimethyltetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadecan-8-one

Traditional Name

5-hydroxy-14-[1-(3-hydroxy-5-methylpyridin-2-yl)ethyl]-2,15-dimethyltetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadecan-8-one

CAS Registry Number

Not Available

SMILES

CC(C1CCC2C3CC(=O)C4CC(O)CCC4(C)C3CCC12C)C1=NC=C(C)C=C1O

InChI Identifier

InChI=1S/C27H39NO3/c1-15-11-24(31)25(28-14-15)16(2)19-5-6-20-18-13-23(30)22-12-17(29)7-9-27(22,4)21(18)8-10-26(19,20)3/h11,14,16-22,29,31H,5-10,12-13H2,1-4H3

InChI Key

NMHCTUTYNGBHMC-UHFFFAOYSA-N

Experimental Spectra

Not Available

Predicted Spectra

Not Available

Chemical Shift Submissions

Not Available

Species

Species of Origin

Species Name	Source	Reference
Fritillaria imperialis	LOTUS Database	35616633
Fritillaria raddeana	LOTUS Database	35616633

Chemical Taxonomy

Description

Belongs to the class of organic compounds known as gluco/mineralocorticoids, progestogins and derivatives. These are steroids with a structure based on a hydroxylated prostane moiety.

Kingdom

Organic compounds

Super Class

Lipids and lipid-like molecules

Class

Steroids and steroid derivatives

Sub Class

Pregnane steroids

Direct Parent

Gluco/mineralocorticoids, progestogins and derivatives

Alternative Parents

Substituents

Progestogin-skeleton
3-hydroxysteroid
Hydroxysteroid
Oxosteroid
6-oxosteroid
Methylpyridine
Hydroxypyridine
Pyridine
Heteroaromatic compound
Cyclic alcohol
Ketone
Secondary alcohol
Organoheterocyclic compound
Azacycle
Organic oxide
Organooxygen compound
Organonitrogen compound
Alcohol
Organopnictogen compound
Organic oxygen compound
Carbonyl group
Hydrocarbon derivative
Organic nitrogen compound
Aromatic heteropolycyclic compound

Molecular Framework

Aromatic heteropolycyclic 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
logP	4.32	ALOGPS
logP	4.79	ChemAxon
logS	-5	ALOGPS
pKa (Strongest Acidic)	9.86	ChemAxon
pKa (Strongest Basic)	6.13	ChemAxon
Physiological Charge	0	ChemAxon
Hydrogen Acceptor Count	4	ChemAxon
Hydrogen Donor Count	2	ChemAxon
Polar Surface Area	70.42 Å²	ChemAxon
Rotatable Bond Count	2	ChemAxon
Refractivity	122.04 m³·mol⁻¹	ChemAxon
Polarizability	49.51 Å³	ChemAxon
Number of Rings	5	ChemAxon
Bioavailability	Yes	ChemAxon
Rule of Five	Yes	ChemAxon
Ghose Filter	Yes	ChemAxon
Veber's Rule	No	ChemAxon
MDDR-like Rule	No	ChemAxon

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

Not Available

PDB ID

Not Available

ChEBI ID

Not Available

Good Scents ID

Not Available

References

General References

LOTUS database [Link]

Showing NP-Card for 7-hydroxy-1-[1-(3-hydroxy-5-methylpyridin-2-yl)ethyl]-9a,11a-dimethyl-tetradecahydrocyclopenta[a]phenanthren-5-one (NP0220742)

MOL for NP0220742 (7-hydroxy-1-[1-(3-hydroxy-5-methylpyridin-2-yl)ethyl]-9a,11a-dimethyl-tetradecahydrocyclopenta[a]phenanthren-5-one)

3D MOL for NP0220742 (7-hydroxy-1-[1-(3-hydroxy-5-methylpyridin-2-yl)ethyl]-9a,11a-dimethyl-tetradecahydrocyclopenta[a]phenanthren-5-one)

3D SDF for NP0220742 (7-hydroxy-1-[1-(3-hydroxy-5-methylpyridin-2-yl)ethyl]-9a,11a-dimethyl-tetradecahydrocyclopenta[a]phenanthren-5-one)

3D-SDF for NP0220742 (7-hydroxy-1-[1-(3-hydroxy-5-methylpyridin-2-yl)ethyl]-9a,11a-dimethyl-tetradecahydrocyclopenta[a]phenanthren-5-one)

PDB for NP0220742 (7-hydroxy-1-[1-(3-hydroxy-5-methylpyridin-2-yl)ethyl]-9a,11a-dimethyl-tetradecahydrocyclopenta[a]phenanthren-5-one)

3D PDB for NP0220742 (7-hydroxy-1-[1-(3-hydroxy-5-methylpyridin-2-yl)ethyl]-9a,11a-dimethyl-tetradecahydrocyclopenta[a]phenanthren-5-one)

SMILES for NP0220742 (7-hydroxy-1-[1-(3-hydroxy-5-methylpyridin-2-yl)ethyl]-9a,11a-dimethyl-tetradecahydrocyclopenta[a]phenanthren-5-one)

INCHI for NP0220742 (7-hydroxy-1-[1-(3-hydroxy-5-methylpyridin-2-yl)ethyl]-9a,11a-dimethyl-tetradecahydrocyclopenta[a]phenanthren-5-one)

Structure for NP0220742 (7-hydroxy-1-[1-(3-hydroxy-5-methylpyridin-2-yl)ethyl]-9a,11a-dimethyl-tetradecahydrocyclopenta[a]phenanthren-5-one)

3D Structure for NP0220742 (7-hydroxy-1-[1-(3-hydroxy-5-methylpyridin-2-yl)ethyl]-9a,11a-dimethyl-tetradecahydrocyclopenta[a]phenanthren-5-one)