NP-MRD: Showing NP-Card for 5-chloro-3-(3,5-dimethylhepta-1,3-dien-1-yl)-9-(3-hydroxybutanoyl)-6a-methyl-9h,9ah-furo[2,3-h]isochromene-6,8-dione (NP0179587)

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Record Information

Version

2.0

Created at

2022-09-03 17:47:47 UTC

Updated at

2022-09-03 17:47:47 UTC

NP-MRD ID

NP0179587

Secondary Accession Numbers

None

Natural Product Identification

Common Name

5-chloro-3-(3,5-dimethylhepta-1,3-dien-1-yl)-9-(3-hydroxybutanoyl)-6a-methyl-9h,9ah-furo[2,3-h]isochromene-6,8-dione

Description

5-Chloro-3-(3,5-dimethylhepta-1,3-dien-1-yl)-9-(3-hydroxybutanoyl)-6a-methyl-6H,6aH,8H,9H,9aH-furo[2,3-h]isochromene-6,8-dione belongs to the class of organic compounds known as cyclohexenones. Cyclohexenones are compounds containing a cylohexenone moiety, which is a six-membered aliphatic ring that carries a ketone and has one endocyclic double bond. Based on a literature review very few articles have been published on 5-chloro-3-(3,5-dimethylhepta-1,3-dien-1-yl)-9-(3-hydroxybutanoyl)-6a-methyl-6H,6aH,8H,9H,9aH-furo[2,3-h]isochromene-6,8-dione.

Structure

MOL SDF PDB SMILES InChI


  Mrv1652309032219472D          

 32 34  0  0  0  0            999 V2000
   -3.9086    0.0566    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -3.0840    0.0308    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -2.6940   -0.6962    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -3.1287   -1.3974    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.8694   -0.7219    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.4795   -1.4490    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.9141   -2.1502    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.6549   -1.4747    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.2203   -0.7735    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.6043   -0.7992    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.0390   -0.0980    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.8636   -0.1238    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.2982    0.5775    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.9082    1.3045    0.0000 Cl  0  0  0  0  0  0  0  0  0  0  0  0
    3.1228    0.5517    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.5574    1.2530    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    3.5127   -0.1753    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.0183    0.4767    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.3140   -0.3719    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    4.3745   -1.1947    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.0758   -1.6293    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    3.6108   -1.5066    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.4141   -2.3078    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.6219   -2.5381    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    4.0097   -2.8787    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.8130   -3.6799    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.4086   -4.2508    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.0208   -3.9102    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    3.0781   -0.8765    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.2535   -0.8508    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.8189   -1.5520    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.9943   -1.5262    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
  5  3  1  4  0  0  0
  5  6  2  0  0  0  0
  6  7  1  0  0  0  0
  8  6  1  4  0  0  0
  8  9  2  0  0  0  0
  9 10  1  0  0  0  0
 10 11  2  0  0  0  0
 11 12  1  0  0  0  0
 12 13  2  0  0  0  0
 13 14  1  0  0  0  0
 13 15  1  0  0  0  0
 15 16  2  0  0  0  0
 15 17  1  0  0  0  0
 17 18  1  0  0  0  0
 17 19  1  0  0  0  0
 19 20  1  0  0  0  0
 20 21  2  0  0  0  0
 20 22  1  0  0  0  0
 22 23  1  0  0  0  0
 23 24  2  0  0  0  0
 23 25  1  0  0  0  0
 25 26  1  0  0  0  0
 26 27  1  0  0  0  0
 26 28  1  0  0  0  0
 22 29  1  0  0  0  0
 17 29  1  0  0  0  0
 29 30  1  0  0  0  0
 12 30  1  0  0  0  0
 30 31  2  0  0  0  0
 31 32  1  0  0  0  0
 10 32  1  0  0  0  0
M  END


  Mrv1652309032219472D          

 32 34  0  0  0  0            999 V2000
   -3.9086    0.0566    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -3.0840    0.0308    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -2.6940   -0.6962    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -3.1287   -1.3974    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.8694   -0.7219    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.4795   -1.4490    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.9141   -2.1502    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.6549   -1.4747    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.2203   -0.7735    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.6043   -0.7992    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.0390   -0.0980    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.8636   -0.1238    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.2982    0.5775    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.9082    1.3045    0.0000 Cl  0  0  0  0  0  0  0  0  0  0  0  0
    3.1228    0.5517    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.5574    1.2530    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    3.5127   -0.1753    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.0183    0.4767    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.3140   -0.3719    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    4.3745   -1.1947    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.0758   -1.6293    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    3.6108   -1.5066    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.4141   -2.3078    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.6219   -2.5381    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    4.0097   -2.8787    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.8130   -3.6799    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.4086   -4.2508    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.0208   -3.9102    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    3.0781   -0.8765    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.2535   -0.8508    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.8189   -1.5520    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.9943   -1.5262    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
  5  3  1  4  0  0  0
  5  6  2  0  0  0  0
  6  7  1  0  0  0  0
  8  6  1  4  0  0  0
  8  9  2  0  0  0  0
  9 10  1  0  0  0  0
 10 11  2  0  0  0  0
 11 12  1  0  0  0  0
 12 13  2  0  0  0  0
 13 14  1  0  0  0  0
 13 15  1  0  0  0  0
 15 16  2  0  0  0  0
 15 17  1  0  0  0  0
 17 18  1  0  0  0  0
 17 19  1  0  0  0  0
 19 20  1  0  0  0  0
 20 21  2  0  0  0  0
 20 22  1  0  0  0  0
 22 23  1  0  0  0  0
 23 24  2  0  0  0  0
 23 25  1  0  0  0  0
 25 26  1  0  0  0  0
 26 27  1  0  0  0  0
 26 28  1  0  0  0  0
 22 29  1  0  0  0  0
 17 29  1  0  0  0  0
 29 30  1  0  0  0  0
 12 30  1  0  0  0  0
 30 31  2  0  0  0  0
 31 32  1  0  0  0  0
 10 32  1  0  0  0  0
M  END
> <DATABASE_ID>
NP0179587

> <DATABASE_NAME>
NP-MRD

> <SMILES>
CCC(C)C=C(C)C=CC1=CC2=C(Cl)C(=O)C3(C)OC(=O)C(C3C2=CO1)C(=O)CC(C)O

> <INCHI_IDENTIFIER>
InChI=1S/C25H29ClO6/c1-6-13(2)9-14(3)7-8-16-11-17-18(12-31-16)21-20(19(28)10-15(4)27)24(30)32-25(21,5)23(29)22(17)26/h7-9,11-13,15,20-21,27H,6,10H2,1-5H3

> <INCHI_KEY>
GZKZGQBQFWIDTD-UHFFFAOYSA-N

> <FORMULA>
C25H29ClO6

> <MOLECULAR_WEIGHT>
460.95

> <EXACT_MASS>
460.1652664

> <JCHEM_ACCEPTOR_COUNT>
5

> <JCHEM_ATOM_COUNT>
61

> <JCHEM_AVERAGE_POLARIZABILITY>
48.99234841134669

> <JCHEM_BIOAVAILABILITY>
1

> <JCHEM_DONOR_COUNT>
1

> <JCHEM_FORMAL_CHARGE>
0

> <JCHEM_GHOSE_FILTER>
1

> <JCHEM_IUPAC>
5-chloro-3-(3,5-dimethylhepta-1,3-dien-1-yl)-9-(3-hydroxybutanoyl)-6a-methyl-6H,6aH,8H,9H,9aH-furo[2,3-h]isochromene-6,8-dione

> <JCHEM_LOGP>
3.5148302510000002

> <JCHEM_MDDR_LIKE_RULE>
1

> <JCHEM_NUMBER_OF_RINGS>
3

> <JCHEM_PHYSIOLOGICAL_CHARGE>
0

> <JCHEM_PKA>
15.553996074442352

> <JCHEM_PKA_STRONGEST_ACIDIC>
11.660597583416678

> <JCHEM_PKA_STRONGEST_BASIC>
-2.584065927826856

> <JCHEM_POLAR_SURFACE_AREA>
89.9

> <JCHEM_REFRACTIVITY>
126.20289999999997

> <JCHEM_ROTATABLE_BOND_COUNT>
7

> <JCHEM_RULE_OF_FIVE>
1

> <JCHEM_TRADITIONAL_IUPAC>
5-chloro-3-(3,5-dimethylhepta-1,3-dien-1-yl)-9-(3-hydroxybutanoyl)-6a-methyl-9H,9aH-furo[2,3-h]isochromene-6,8-dione

> <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      -7.296   0.106   0.000  0.00  0.00           C+0
HETATM    2  C   UNK     0      -5.757   0.058   0.000  0.00  0.00           C+0
HETATM    3  C   UNK     0      -5.029  -1.300   0.000  0.00  0.00           C+0
HETATM    4  C   UNK     0      -5.840  -2.609   0.000  0.00  0.00           C+0
HETATM    5  C   UNK     0      -3.490  -1.348   0.000  0.00  0.00           C+0
HETATM    6  C   UNK     0      -2.762  -2.705   0.000  0.00  0.00           C+0
HETATM    7  C   UNK     0      -3.573  -4.014   0.000  0.00  0.00           C+0
HETATM    8  C   UNK     0      -1.222  -2.753   0.000  0.00  0.00           C+0
HETATM    9  C   UNK     0      -0.411  -1.444   0.000  0.00  0.00           C+0
HETATM   10  C   UNK     0       1.128  -1.492   0.000  0.00  0.00           C+0
HETATM   11  C   UNK     0       1.939  -0.183   0.000  0.00  0.00           C+0
HETATM   12  C   UNK     0       3.479  -0.231   0.000  0.00  0.00           C+0
HETATM   13  C   UNK     0       4.290   1.078   0.000  0.00  0.00           C+0
HETATM   14 Cl   UNK     0       3.562   2.435   0.000  0.00  0.00          Cl+0
HETATM   15  C   UNK     0       5.829   1.030   0.000  0.00  0.00           C+0
HETATM   16  O   UNK     0       6.640   2.339   0.000  0.00  0.00           O+0
HETATM   17  C   UNK     0       6.557  -0.327   0.000  0.00  0.00           C+0
HETATM   18  C   UNK     0       7.501   0.890   0.000  0.00  0.00           C+0
HETATM   19  O   UNK     0       8.053  -0.694   0.000  0.00  0.00           O+0
HETATM   20  C   UNK     0       8.166  -2.230   0.000  0.00  0.00           C+0
HETATM   21  O   UNK     0       9.475  -3.041   0.000  0.00  0.00           O+0
HETATM   22  C   UNK     0       6.740  -2.812   0.000  0.00  0.00           C+0
HETATM   23  C   UNK     0       6.373  -4.308   0.000  0.00  0.00           C+0
HETATM   24  O   UNK     0       4.894  -4.738   0.000  0.00  0.00           O+0
HETATM   25  C   UNK     0       7.485  -5.374   0.000  0.00  0.00           C+0
HETATM   26  C   UNK     0       7.118  -6.869   0.000  0.00  0.00           C+0
HETATM   27  C   UNK     0       8.229  -7.935   0.000  0.00  0.00           C+0
HETATM   28  O   UNK     0       5.639  -7.299   0.000  0.00  0.00           O+0
HETATM   29  C   UNK     0       5.746  -1.636   0.000  0.00  0.00           C+0
HETATM   30  C   UNK     0       4.207  -1.588   0.000  0.00  0.00           C+0
HETATM   31  C   UNK     0       3.395  -2.897   0.000  0.00  0.00           C+0
HETATM   32  O   UNK     0       1.856  -2.849   0.000  0.00  0.00           O+0
CONECT    1    2                                                            
CONECT    2    1    3                                                       
CONECT    3    2    4    5                                                  
CONECT    4    3                                                            
CONECT    5    3    6                                                       
CONECT    6    5    7    8                                                  
CONECT    7    6                                                            
CONECT    8    6    9                                                       
CONECT    9    8   10                                                       
CONECT   10    9   11   32                                                  
CONECT   11   10   12                                                       
CONECT   12   11   13   30                                                  
CONECT   13   12   14   15                                                  
CONECT   14   13                                                            
CONECT   15   13   16   17                                                  
CONECT   16   15                                                            
CONECT   17   15   18   19   29                                             
CONECT   18   17                                                            
CONECT   19   17   20                                                       
CONECT   20   19   21   22                                                  
CONECT   21   20                                                            
CONECT   22   20   23   29                                                  
CONECT   23   22   24   25                                                  
CONECT   24   23                                                            
CONECT   25   23   26                                                       
CONECT   26   25   27   28                                                  
CONECT   27   26                                                            
CONECT   28   26                                                            
CONECT   29   22   17   30                                                  
CONECT   30   29   12   31                                                  
CONECT   31   30   32                                                       
CONECT   32   31   10                                                       
MASTER        0    0    0    0    0    0    0    0   32    0   68    0
END

View in JSmol

Synonyms

Not Available

Chemical Formula

C₂₅H₂₉ClO₆

Average Mass

460.9500 Da

Monoisotopic Mass

460.16527 Da

IUPAC Name

5-chloro-3-(3,5-dimethylhepta-1,3-dien-1-yl)-9-(3-hydroxybutanoyl)-6a-methyl-6H,6aH,8H,9H,9aH-furo[2,3-h]isochromene-6,8-dione

Traditional Name

5-chloro-3-(3,5-dimethylhepta-1,3-dien-1-yl)-9-(3-hydroxybutanoyl)-6a-methyl-9H,9aH-furo[2,3-h]isochromene-6,8-dione

CAS Registry Number

Not Available

SMILES

CCC(C)C=C(C)C=CC1=CC2=C(Cl)C(=O)C3(C)OC(=O)C(C3C2=CO1)C(=O)CC(C)O

InChI Identifier

InChI=1S/C25H29ClO6/c1-6-13(2)9-14(3)7-8-16-11-17-18(12-31-16)21-20(19(28)10-15(4)27)24(30)32-25(21,5)23(29)22(17)26/h7-9,11-13,15,20-21,27H,6,10H2,1-5H3

InChI Key

GZKZGQBQFWIDTD-UHFFFAOYSA-N

Experimental Spectra

Not Available

Predicted Spectra

Not Available

Chemical Shift Submissions

Not Available

Species

Species of Origin

Not Available

Chemical Taxonomy

Description

Belongs to the class of organic compounds known as cyclohexenones. Cyclohexenones are compounds containing a cylohexenone moiety, which is a six-membered aliphatic ring that carries a ketone and has one endocyclic double bond.

Kingdom

Organic compounds

Super Class

Organic oxygen compounds

Class

Organooxygen compounds

Sub Class

Carbonyl compounds

Direct Parent

Cyclohexenones

Alternative Parents

Substituents

Cyclohexenone
Alpha-acyloxy ketone
Beta-hydroxy ketone
Gamma butyrolactone
Pyran
1,3-dicarbonyl compound
Alpha-haloketone
Alpha-chloroketone
Oxolane
Carboxylic acid ester
Lactone
Secondary alcohol
Carboxylic acid derivative
Oxacycle
Chloroalkene
Monocarboxylic acid or derivatives
Haloalkene
Organoheterocyclic compound
Vinyl chloride
Vinyl halide
Organohalogen compound
Organochloride
Hydrocarbon derivative
Organic oxide
Alcohol
Aliphatic heteropolycyclic compound

Molecular Framework

Aliphatic 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	3.51	ChemAxon
pKa (Strongest Acidic)	11.66	ChemAxon
pKa (Strongest Basic)	-2.6	ChemAxon
Physiological Charge	0	ChemAxon
Hydrogen Acceptor Count	5	ChemAxon
Hydrogen Donor Count	1	ChemAxon
Polar Surface Area	89.9 Å²	ChemAxon
Rotatable Bond Count	7	ChemAxon
Refractivity	126.2 m³·mol⁻¹	ChemAxon
Polarizability	48.99 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	Yes	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

85041448

PDB ID

Not Available

ChEBI ID

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Good Scents ID

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References

General References

LOTUS database [Link]

Showing NP-Card for 5-chloro-3-(3,5-dimethylhepta-1,3-dien-1-yl)-9-(3-hydroxybutanoyl)-6a-methyl-9h,9ah-furo[2,3-h]isochromene-6,8-dione (NP0179587)

MOL for NP0179587 (5-chloro-3-(3,5-dimethylhepta-1,3-dien-1-yl)-9-(3-hydroxybutanoyl)-6a-methyl-9h,9ah-furo[2,3-h]isochromene-6,8-dione)

3D MOL for NP0179587 (5-chloro-3-(3,5-dimethylhepta-1,3-dien-1-yl)-9-(3-hydroxybutanoyl)-6a-methyl-9h,9ah-furo[2,3-h]isochromene-6,8-dione)

3D SDF for NP0179587 (5-chloro-3-(3,5-dimethylhepta-1,3-dien-1-yl)-9-(3-hydroxybutanoyl)-6a-methyl-9h,9ah-furo[2,3-h]isochromene-6,8-dione)

3D-SDF for NP0179587 (5-chloro-3-(3,5-dimethylhepta-1,3-dien-1-yl)-9-(3-hydroxybutanoyl)-6a-methyl-9h,9ah-furo[2,3-h]isochromene-6,8-dione)

PDB for NP0179587 (5-chloro-3-(3,5-dimethylhepta-1,3-dien-1-yl)-9-(3-hydroxybutanoyl)-6a-methyl-9h,9ah-furo[2,3-h]isochromene-6,8-dione)

3D PDB for NP0179587 (5-chloro-3-(3,5-dimethylhepta-1,3-dien-1-yl)-9-(3-hydroxybutanoyl)-6a-methyl-9h,9ah-furo[2,3-h]isochromene-6,8-dione)

SMILES for NP0179587 (5-chloro-3-(3,5-dimethylhepta-1,3-dien-1-yl)-9-(3-hydroxybutanoyl)-6a-methyl-9h,9ah-furo[2,3-h]isochromene-6,8-dione)

INCHI for NP0179587 (5-chloro-3-(3,5-dimethylhepta-1,3-dien-1-yl)-9-(3-hydroxybutanoyl)-6a-methyl-9h,9ah-furo[2,3-h]isochromene-6,8-dione)

Structure for NP0179587 (5-chloro-3-(3,5-dimethylhepta-1,3-dien-1-yl)-9-(3-hydroxybutanoyl)-6a-methyl-9h,9ah-furo[2,3-h]isochromene-6,8-dione)

3D Structure for NP0179587 (5-chloro-3-(3,5-dimethylhepta-1,3-dien-1-yl)-9-(3-hydroxybutanoyl)-6a-methyl-9h,9ah-furo[2,3-h]isochromene-6,8-dione)