Pulvinic acid

Pulvinic acid
Names
	IUPAC name (2E)-(5-Hydroxy-3-oxo-4-phenyl-2(3H)-furanylidene)(phenyl)acetic acid
Identifiers
CAS Number	26548-70-9;
3D model (JSmol)	Interactive image;
ChemSpider	2299472;
PubChem CID	3035166;
	InChI InChI=1S/C18H12O5/c19-15-13(11-7-3-1-4-8-11)18(22)23-16(15)14(17(20)21)12-9-5-2-6-10-12/h1-10,22H,(H,20,21)/b16-14+ Key: WFZQEWXZFDGFEP-JQIJEIRASA-N; InChI=1/C18H12O5/c19-15-13(11-7-3-1-4-8-11)18(22)23-16(15)14(17(20)21)12-9-5-2-6-10-12/h1-10,22H,(H,20,21)/b16-14+ Key: WFZQEWXZFDGFEP-JQIJEIRABX;
	SMILES O=C(O)C(=C2/OC(/O)=C(/c1ccccc1)C2=O)/c3ccccc3;
Properties
Chemical formula	C18H12O5
Molar mass	308.289 g·mol−1
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Pulvinic acid is a natural chemical pigment found in some lichens.^[1] Dimers of pulvinic acid have been found in the fungi Scleroderma citrinum and Chalciporus piperatus.^[2]

References

^ Bourdreux, Yann; Bodio, Ewen; Willis, Catherine; Billaud, Célia; Le Gall, Thierry; Mioskowski, Charles (2008). "Synthesis of vulpinic and pulvinic acids from tetronic acid". Tetrahedron. 64 (37): 8930–8937. doi:10.1016/j.tet.2008.06.058.
^ Winner M, Giménez A, Schmidt H, Sontag B, Steffan B, Steglich W (2004). "Unusual pulvinic acid dimers from the common fungi Scleroderma citrinum (common earthball) and Chalciporus piperatus (peppery bolete)". Angewandte Chemie. 43 (14): 1883–6. doi:10.1002/anie.200352529. PMID 15054803.

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