6273-79-6

Basic information

• Product Name: Pulvinicanhydride
• Synonyms: 3,6-Diphenylfuro[3,2-b]furan-2,5-dione;Pulvic acid lactone;Pulvic dilactone;Pulvic di-γ-lactone;Pulvinic acid lactone
• CAS NO: 6273-79-6
• Molecular Formula: C₁₈H₁₀O₄
• Molecular Weight: 598.561
• Product Categories: Lichen Products
• Mol File: 6273-79-6.mol

Chemical Properties

• Boiling Point: 544.3°C at 760 mmHg
• Flash Point: 290.8°C
• Appearance: /
• Density: 1.42g/cm³
• Vapor Pressure: 6.63E-12mmHg at 25°C
• Refractive Index: 1.69
• CAS DataBase Reference: Pulvinicanhydride(CAS DataBase Reference)
• NIST Chemistry Reference: Pulvinicanhydride(6273-79-6)
• EPA Substance Registry System: Pulvinicanhydride(6273-79-6)

Safety Data

• Hazardous Substances Data: 6273-79-6(Hazardous Substances Data)

Usage

InChI:InChI=1/C18H10O4/c19-17-13(11-7-3-1-4-8-11)15-16(22-17)14(18(20)21-15)12-9-5-2-6-10-12/h1-10H

Upstream product

• 108-24-7 acetic anhydride 
• 110-86-1 pyridine 
• 98-88-4 benzoyl chloride 
• 75-36-5 acetyl chloride 
• 548-59-4 2,5-dihydroxy-3,6-diphenyl-1,4-benzoquinone 
• 79-37-8 oxalyl dichloride 
• 103-80-0 phenylacetyl chloride 
• 57740-69-9 6-benzylidene-3-hydroxy-4-phenyl-pyran-2,5-dione 
• 6838-54-6 3-hydroxy-1,4-diphenyl-2-butanone 
• 122-78-1 phenylacetaldehyde 
• 93554-96-2 α-<(trimethylsilyl)oxy>benzenepropanenitrile 
• 131146-41-3 3-hydroxy-4-phenyl-6-(phenylmethyl)-2H-pyran-2,5(6H)-dione 
• 131146-44-6 3-methoxy-4-phenyl-6-(phenylmethyl)-2H-pyran-2,5(6H)-dione 
• 131146-47-9 6-bromo-3-methoxy-4-phenyl-6-(phenylmethyl)-2H-pyran-2,5(6H)-dione 

Downstream Products

• 106898-67-3 2-(3-Hydroxy-5-oxo-4-phenyl-2,5-dihydro-furan-2-yl)-8-methyl-2-phenyl-4H-1,5-dioxa-4-aza-phenanthrene-3,6-dione 
• 521-52-8 vulpic acid 
• 481-59-4 leprapinic acid 
• 22628-20-2 (E)-4-hydroxy-5-(α-methoxycarbonyl-4-methoxybenzylidene)-3-phenylfuran-2(5H)-one 
• 106391-05-3 2-[3-Hydroxy-5-oxo-4-phenyl-5H-furan-(2E)-ylidene]-N-(2-methyl-6-nitro-phenyl)-2-phenyl-acetamide 
• 106391-01-9 N-(2,4-Dibromo-6-nitro-phenyl)-2-[3-hydroxy-5-oxo-4-phenyl-5H-furan-(2E)-ylidene]-2-phenyl-acetamide 
• 106390-98-1 4-Hydroxy-5-[1-(5-methyl-1H-benzoimidazol-2-yl)-1-phenyl-meth-(E)-ylidene]-3-phenyl-5H-furan-2-one 
• 106898-69-5 2-(3-Hydroxy-5-oxo-4-phenyl-2,5-dihydro-furan-2-yl)-6,7-dimethyl-2-phenyl-4H-1,5-dioxa-4-aza-phenanthrene-3,8-dione 
• 106498-36-6 5-<α-(2-benzimidazolyl)benzylidene>-4-hydroxy-3-phenyl-2(5H)-furanone 
• 135275-44-4 5-[1-Benzooxazol-2-yl-1-phenyl-meth-(E)-ylidene]-4-hydroxy-3-phenyl-5H-furan-2-one 
• 106898-70-8 2-[3-Hydroxy-5-oxo-4-phenyl-5H-furan-(2E)-ylidene]-N-(2-hydroxy-phenyl)-2-phenyl-acetamide 
• 106898-64-0 2-(3-Hydroxy-5-oxo-4-phenyl-2,5-dihydro-furan-2-yl)-2-phenyl-4H-benzo[1,4]oxazin-3-one 
• 106898-68-4 2-(3-Hydroxy-5-oxo-4-phenyl-2,5-dihydro-furan-2-yl)-6-methyl-2-phenyl-4H-1,5-dioxa-4-aza-phenanthrene-3,8-dione 
• 106391-02-0 N-(2,4-Dichloro-6-nitro-phenyl)-2-[3-hydroxy-5-oxo-4-phenyl-5H-furan-(2E)-ylidene]-2-phenyl-acetamide 

Relevant articles and documents

Synthesis of Grevillins, Novel Pyrandione Pigments of Fungi. Biogenetic Interrelationships between Grevillins, Pulvinic Acids, Terphenylquinones and Xylerythrins

A synthesis of the grevillin group of pyrandione pigments, e.g. 3, 23 and 24 present in fungi is described.The synthesis, which is based on a biogenetic model, uses bis-benzylacyloins 9 and their corresponding oxalate derivatives as key intermediates (Scheme 3).Treatment of the grevillins 25a-c with sodium ethoxide in ethanol effects their quantitative isomerisation into the corresponding terphenylquinone pigments 4a-c.Perkin-type condensations between the terphenylquinones 4 and arylacetic acids in the presence of sodium acetate-acetic anhydride then produces the xylerythrin pigments 29a-e, whereas rearrangements of 4 in the presence of dimethyl sulphoxide leads to pulvinic acid derivative, e.g. 31, 32 and 5.These synthetic studies interrelate the biosynthetic origins of the pigment types 3, 4, 5 and 8 together with the related pulvinones 6 and furanone 7 fungal pigments.

SYNTHESIS OF GREVILLINS AND THEIR BIOGENETIC INTERRELATIONSHIP WITH TERPHENYLQUINONES, XYLERYTHRINS AND PULVINIC ACIDS

A synthesis of the grevillin group , of pigments present in fungi, using benzylacyloins, viz (9), as key intermediates is described, and the biogenetic interrelationships between them and the terphenylquinone, xylerythrin and pulvinic acid families of natural colouring matter, are exemplified with the in vitro conversions (16)-(17), (17)-(20) and (17)-(22).