NP-MRD: Showing NP-Card for 3,5,7-Trihydroxy-8-methoxy-2-phenyl-4H-1-benzopyran-4-one (NP0052851)

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Record Information

Version

2.0

Created at

2022-04-27 23:45:34 UTC

Updated at

2022-04-27 23:45:34 UTC

NP-MRD ID

NP0052851

Secondary Accession Numbers

None

Natural Product Identification

Common Name

3,5,7-Trihydroxy-8-methoxy-2-phenyl-4H-1-benzopyran-4-one

Description

3,5,7-Trihydroxy-8-methoxy-2-phenyl-4H-chromen-4-one belongs to the class of organic compounds known as flavonols. Flavonols are compounds that contain a flavone (2-phenyl-1-benzopyran-4-one) backbone carrying a hydroxyl group at the 3-position. Thus, 3,5,7-trihydroxy-8-methoxy-2-phenyl-4H-chromen-4-one is considered to be a flavonoid lipid molecule. 3,5,7-Trihydroxy-8-methoxy-2-phenyl-4H-chromen-4-one is a very hydrophobic molecule, practically insoluble (in water), and relatively neutral. 3,5,7-Trihydroxy-8-methoxy-2-phenyl-4h-chromen-4-one is a predicted metabolite generated by BioTransformer¹ that is produced by the metabolism of 3,5,7-trihydroxy-2-(4-hydroxyphenyl)-8-methoxy-4h-chromen-4-one. This -4p-dehydroxylation-of-substituted-benzene occurs in human gut microbiota. 3,5,7-Trihydroxy-8-methoxy-2-phenyl-4H-1-benzopyran-4-one is found in Adenostoma sparsifolium, Helichrysum aureum, Helichrysum italicum, Muntingia calabura, Nothofagus alessandri, Nothofagus antarctica, Nothofagus spp., Ozothamnus expansifolius, Platanus acerifolia and Woodsia scopulina. It is generated by Dehydroxylase enzyme via a -4p-dehydroxylation-of-substituted-benzene reaction.

Structure

MOL 3D MOL SDF PDB SMILES InChI

     RDKit          3D

 34 36  0  0  0  0  0  0  0  0999 V2000
   -2.1691   -2.6064    1.0287 C   0  0  0  0  0  0  0  0  0  0  0  0
   -2.2646   -1.8035   -0.1047 O   0  0  0  0  0  0  0  0  0  0  0  0
   -2.4065   -0.4403   -0.1274 C   0  0  0  0  0  0  0  0  0  0  0  0
   -3.6447    0.1491   -0.1268 C   0  0  0  0  0  0  0  0  0  0  0  0
   -4.7785   -0.6842   -0.1022 O   0  0  0  0  0  0  0  0  0  0  0  0
   -3.7825    1.5023   -0.1493 C   0  0  0  0  0  0  0  0  0  0  0  0
   -2.6640    2.3530   -0.1741 C   0  0  0  0  0  0  0  0  0  0  0  0
   -2.8266    3.6882   -0.1961 O   0  0  0  0  0  0  0  0  0  0  0  0
   -1.4307    1.7475   -0.1744 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.2461    2.4496   -0.1971 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.2511    3.6948   -0.2189 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.9826    1.7774   -0.1962 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.1113    2.5704   -0.2200 O   0  0  0  0  0  0  0  0  0  0  0  0
    1.0563    0.4180   -0.1730 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.2940   -0.3437   -0.1705 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.5403    0.1711   -0.1905 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.6811   -0.6525   -0.1861 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.5582   -2.0155   -0.1612 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.3036   -2.5663   -0.1405 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.2046   -1.7422   -0.1452 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.1101   -0.2309   -0.1513 O   0  0  0  0  0  0  0  0  0  0  0  0
   -1.2746    0.3557   -0.1513 C   0  0  0  0  0  0  0  0  0  0  0  0
   -3.1654   -3.0742    1.2147 H   0  0  0  0  0  0  0  0  0  0  0  0
   -1.4915   -3.4639    0.7769 H   0  0  0  0  0  0  0  0  0  0  0  0
   -1.8434   -2.0783    1.9429 H   0  0  0  0  0  0  0  0  0  0  0  0
   -4.6283   -1.6800   -0.0861 H   0  0  0  0  0  0  0  0  0  0  0  0
   -4.7597    1.9765   -0.1490 H   0  0  0  0  0  0  0  0  0  0  0  0
   -2.2140    4.4196   -0.2143 H   0  0  0  0  0  0  0  0  0  0  0  0
    2.1002    3.5716   -0.2375 H   0  0  0  0  0  0  0  0  0  0  0  0
    3.7064    1.2340   -0.2106 H   0  0  0  0  0  0  0  0  0  0  0  0
    5.6624   -0.2202   -0.2024 H   0  0  0  0  0  0  0  0  0  0  0  0
    5.4273   -2.6796   -0.1572 H   0  0  0  0  0  0  0  0  0  0  0  0
    3.1121   -3.6316   -0.1202 H   0  0  0  0  0  0  0  0  0  0  0  0
    1.2110   -2.1657   -0.1291 H   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  1  0
  2  3  1  0
  3  4  2  0
  4  5  1  0
  4  6  1  0
  6  7  2  0
  7  8  1  0
  7  9  1  0
  9 22  2  0
 22 21  1  0
 21 14  1  0
 14 12  2  0
 12 13  1  0
 12 10  1  0
 10 11  2  0
 14 15  1  0
 15 16  2  0
 16 17  1  0
 17 18  2  0
 18 19  1  0
 19 20  2  0
 22  3  1  0
 20 15  1  0
 10  9  1  0
  1 23  1  0
  1 24  1  0
  1 25  1  0
  5 26  1  0
  6 27  1  0
  8 28  1  0
 13 29  1  0
 16 30  1  0
 17 31  1  0
 18 32  1  0
 19 33  1  0
 20 34  1  0
M  END


  Mrv1652308221903432D          

 22 24  0  0  0  0            999 V2000
   -1.4289    2.4750    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.5724    2.0625    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.8579    2.4750    0.0000 C   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
    2.1434    2.0625    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.8579    0.8250    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    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    0.8250    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.0000    0.0000    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
    1.4289    0.8250    0.0000 C   0  0  0  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
    0.0000    0.8250    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.7145   -1.2375    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
   -2.1434    1.2375    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.7145   -1.2375    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    2.1434   -0.4125    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
   -0.7145    2.0625    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.7145    1.2375    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
  3  2  2  0  0  0  0
  4  2  1  0  0  0  0
  5  3  1  0  0  0  0
  6  4  2  0  0  0  0
  8  5  2  0  0  0  0
  8  6  1  0  0  0  0
  9  7  2  0  0  0  0
 10  7  1  0  0  0  0
 11  9  1  0  0  0  0
 12 11  1  0  0  0  0
 13 12  1  0  0  0  0
 14  8  1  0  0  0  0
 14 13  2  0  0  0  0
 15 10  2  0  0  0  0
 16 11  2  0  0  0  0
 16 15  1  0  0  0  0
 17  9  1  0  0  0  0
 18 10  1  0  0  0  0
 19 12  2  0  0  0  0
 20 13  1  0  0  0  0
 21  1  1  0  0  0  0
 21 15  1  0  0  0  0
 22 14  1  0  0  0  0
 22 16  1  0  0  0  0
M  END
> <DATABASE_ID>
NP0052851

> <DATABASE_NAME>
NP-MRD

> <SMILES>
COC1=C(O)C=C(O)C2=C1OC(=C(O)C2=O)C1=CC=CC=C1

> <INCHI_IDENTIFIER>
InChI=1S/C16H12O6/c1-21-15-10(18)7-9(17)11-12(19)13(20)14(22-16(11)15)8-5-3-2-4-6-8/h2-7,17-18,20H,1H3

> <INCHI_KEY>
NAENHANDGVDMPA-UHFFFAOYSA-N

> <FORMULA>
C16H12O6

> <MOLECULAR_WEIGHT>
300.266

> <EXACT_MASS>
300.063388106

> <JCHEM_ACCEPTOR_COUNT>
6

> <JCHEM_ATOM_COUNT>
34

> <JCHEM_AVERAGE_POLARIZABILITY>
29.29106164198628

> <JCHEM_BIOAVAILABILITY>
1

> <JCHEM_DONOR_COUNT>
3

> <JCHEM_FORMAL_CHARGE>
0

> <JCHEM_GHOSE_FILTER>
1

> <JCHEM_IUPAC>
3,5,7-trihydroxy-8-methoxy-2-phenyl-4H-chromen-4-one

> <ALOGPS_LOGP>
2.46

> <JCHEM_LOGP>
2.6057588416666664

> <ALOGPS_LOGS>
-3.51

> <JCHEM_MDDR_LIKE_RULE>
0

> <JCHEM_NUMBER_OF_RINGS>
3

> <JCHEM_PHYSIOLOGICAL_CHARGE>
-1

> <JCHEM_PKA>
8.40778068884817

> <JCHEM_PKA_STRONGEST_ACIDIC>
6.903034567346219

> <JCHEM_PKA_STRONGEST_BASIC>
-3.9278784057444573

> <JCHEM_POLAR_SURFACE_AREA>
96.22000000000001

> <JCHEM_REFRACTIVITY>
79.3636

> <JCHEM_ROTATABLE_BOND_COUNT>
2

> <JCHEM_RULE_OF_FIVE>
1

> <ALOGPS_SOLUBILITY>
9.24e-02 g/l

> <JCHEM_TRADITIONAL_IUPAC>
8-methoxygalangin

> <JCHEM_VEBER_RULE>
0

$$$$

HEADER    PROTEIN                                 22-AUG-19   NONE
TITLE     NULL                                                        
COMPND    NULL                                                        
SOURCE    NULL                                                        
KEYWDS    NULL                                                        
EXPDTA    NULL                                                        
AUTHOR    Marvin                                                      
REVDAT   1   22-AUG-19         0                                  
HETATM    1  C   UNK     0      -2.667   4.620   0.000  0.00  0.00           C+0
HETATM    2  C   UNK     0       6.668   3.850   0.000  0.00  0.00           C+0
HETATM    3  C   UNK     0       5.335   4.620   0.000  0.00  0.00           C+0
HETATM    4  C   UNK     0       6.668   2.310   0.000  0.00  0.00           C+0
HETATM    5  C   UNK     0       4.001   3.850   0.000  0.00  0.00           C+0
HETATM    6  C   UNK     0       5.335   1.540   0.000  0.00  0.00           C+0
HETATM    7  C   UNK     0      -2.667   0.000   0.000  0.00  0.00           C+0
HETATM    8  C   UNK     0       4.001   2.310   0.000  0.00  0.00           C+0
HETATM    9  C   UNK     0      -1.334  -0.770   0.000  0.00  0.00           C+0
HETATM   10  C   UNK     0      -2.667   1.540   0.000  0.00  0.00           C+0
HETATM   11  C   UNK     0       0.000   0.000   0.000  0.00  0.00           C+0
HETATM   12  C   UNK     0       1.334  -0.770   0.000  0.00  0.00           C+0
HETATM   13  C   UNK     0       2.667   0.000   0.000  0.00  0.00           C+0
HETATM   14  C   UNK     0       2.667   1.540   0.000  0.00  0.00           C+0
HETATM   15  C   UNK     0      -1.334   2.310   0.000  0.00  0.00           C+0
HETATM   16  C   UNK     0       0.000   1.540   0.000  0.00  0.00           C+0
HETATM   17  O   UNK     0      -1.334  -2.310   0.000  0.00  0.00           O+0
HETATM   18  O   UNK     0      -4.001   2.310   0.000  0.00  0.00           O+0
HETATM   19  O   UNK     0       1.334  -2.310   0.000  0.00  0.00           O+0
HETATM   20  O   UNK     0       4.001  -0.770   0.000  0.00  0.00           O+0
HETATM   21  O   UNK     0      -1.334   3.850   0.000  0.00  0.00           O+0
HETATM   22  O   UNK     0       1.334   2.310   0.000  0.00  0.00           O+0
CONECT    1   21                                                            
CONECT    2    3    4                                                       
CONECT    3    2    5                                                       
CONECT    4    2    6                                                       
CONECT    5    3    8                                                       
CONECT    6    4    8                                                       
CONECT    7    9   10                                                       
CONECT    8    5    6   14                                                  
CONECT    9    7   11   17                                                  
CONECT   10    7   15   18                                                  
CONECT   11    9   12   16                                                  
CONECT   12   11   13   19                                                  
CONECT   13   12   14   20                                                  
CONECT   14    8   13   22                                                  
CONECT   15   10   16   21                                                  
CONECT   16   11   15   22                                                  
CONECT   17    9                                                            
CONECT   18   10                                                            
CONECT   19   12                                                            
CONECT   20   13                                                            
CONECT   21    1   15                                                       
CONECT   22   14   16                                                       
MASTER        0    0    0    0    0    0    0    0   22    0   48    0
END

View in JSmol

Synonyms

Not Available

Chemical Formula

C₁₆H₁₂O₆

Average Mass

300.2660 Da

Monoisotopic Mass

300.06339 Da

IUPAC Name

3,5,7-trihydroxy-8-methoxy-2-phenyl-4H-chromen-4-one

Traditional Name

8-methoxygalangin

CAS Registry Number

Not Available

SMILES

COC1=C(O)C=C(O)C2=C1OC(=C(O)C2=O)C1=CC=CC=C1

InChI Identifier

InChI=1S/C16H12O6/c1-21-15-10(18)7-9(17)11-12(19)13(20)14(22-16(11)15)8-5-3-2-4-6-8/h2-7,17-18,20H,1H3

InChI Key

NAENHANDGVDMPA-UHFFFAOYSA-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, D₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 100 MHz, D₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 252 MHz, D₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 1000 MHz, D₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 50 MHz, D₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 200 MHz, D₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 75 MHz, D₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 300 MHz, D₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 101 MHz, D₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 400 MHz, D₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 126 MHz, D₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 500 MHz, D₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 151 MHz, D₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 600 MHz, D₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 176 MHz, D₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 700 MHz, D₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 201 MHz, D₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 800 MHz, D₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 226 MHz, D₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 900 MHz, D₂O, 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
Adenostoma sparsifolium	Plant	KNApSAcK
Helichrysum aureum	Plant	KNApSAcK
Helichrysum italicum	LOTUS Database	35616633
Muntingia calabura	LOTUS Database	35616633
Nothofagus alessandri	Plant	KNApSAcK
Nothofagus antarctica	Plant	KNApSAcK
Nothofagus spp.	Plant	KNApSAcK
Ozothamnus expansifolius	Plant	KNApSAcK
Platanus x hispanica	Plant	KNApSAcK
Woodsia scopulina	Plant	KNApSAcK

Chemical Taxonomy

Description

Belongs to the class of organic compounds known as flavonols. Flavonols are compounds that contain a flavone (2-phenyl-1-benzopyran-4-one) backbone carrying a hydroxyl group at the 3-position.

Kingdom

Organic compounds

Super Class

Phenylpropanoids and polyketides

Class

Flavonoids

Sub Class

Flavones

Direct Parent

Flavonols

Alternative Parents

Substituents

3-hydroxyflavone
8-methoxyflavonoid-skeleton
3-hydroxyflavonoid
5-hydroxyflavonoid
7-hydroxyflavonoid
Hydroxyflavonoid
Chromone
Benzopyran
1-benzopyran
Anisole
1-hydroxy-2-unsubstituted benzenoid
Alkyl aryl ether
Pyranone
Benzenoid
Pyran
Monocyclic benzene moiety
Vinylogous acid
Heteroaromatic compound
Ether
Polyol
Organoheterocyclic compound
Oxacycle
Organic oxygen compound
Organooxygen compound
Hydrocarbon derivative
Organic oxide
Aromatic heteropolycyclic compound

Molecular Framework

Aromatic heteropolycyclic compounds

External Descriptors

Flavones and Flavonols (LMPK12113091 )

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	2.46	ALOGPS
logP	2.61	ChemAxon
logS	-3.5	ALOGPS
pKa (Strongest Acidic)	6.9	ChemAxon
pKa (Strongest Basic)	-3.9	ChemAxon
Physiological Charge	-1	ChemAxon
Hydrogen Acceptor Count	6	ChemAxon
Hydrogen Donor Count	3	ChemAxon
Polar Surface Area	96.22 Å²	ChemAxon
Rotatable Bond Count	2	ChemAxon
Refractivity	79.36 m³·mol⁻¹	ChemAxon
Polarizability	29.29 Å³	ChemAxon
Number of Rings	3	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

HMDB0132137

DrugBank ID

Not Available

Phenol Explorer Compound ID

Not Available

FoodDB ID

Not Available

KNApSAcK ID

Not Available

Chemspider ID

4527111

KEGG Compound ID

Not Available

BioCyc ID

Not Available

BiGG ID

Not Available

Wikipedia Link

Not Available

METLIN ID

Not Available

PubChem Compound

5378234

PDB ID

Not Available

ChEBI ID

Not Available

Good Scents ID

Not Available

References

General References

Not Available

Showing NP-Card for 3,5,7-Trihydroxy-8-methoxy-2-phenyl-4H-1-benzopyran-4-one (NP0052851)

MOL for NP0052851 (3,5,7-Trihydroxy-8-methoxy-2-phenyl-4H-1-benzopyran-4-one)

3D MOL for NP0052851 (3,5,7-Trihydroxy-8-methoxy-2-phenyl-4H-1-benzopyran-4-one)

3D SDF for NP0052851 (3,5,7-Trihydroxy-8-methoxy-2-phenyl-4H-1-benzopyran-4-one)

3D-SDF for NP0052851 (3,5,7-Trihydroxy-8-methoxy-2-phenyl-4H-1-benzopyran-4-one)

PDB for NP0052851 (3,5,7-Trihydroxy-8-methoxy-2-phenyl-4H-1-benzopyran-4-one)

3D PDB for NP0052851 (3,5,7-Trihydroxy-8-methoxy-2-phenyl-4H-1-benzopyran-4-one)

SMILES for NP0052851 (3,5,7-Trihydroxy-8-methoxy-2-phenyl-4H-1-benzopyran-4-one)

INCHI for NP0052851 (3,5,7-Trihydroxy-8-methoxy-2-phenyl-4H-1-benzopyran-4-one)

Structure for NP0052851 (3,5,7-Trihydroxy-8-methoxy-2-phenyl-4H-1-benzopyran-4-one)

3D Structure for NP0052851 (3,5,7-Trihydroxy-8-methoxy-2-phenyl-4H-1-benzopyran-4-one)