Cryptostictic acid

Cryptostictic acid
Names
	IUPAC name 13,17-Dihydroxy-4-(hydroxymethyl)-5-methoxy-7,12-dimethyl-2,10,16-trioxatetracyclo[9.7.0.03,8.014,18]octadeca-1(11),3(8),4,6,12,14(18)-hexaene-9,15-dione
Identifiers
3D model (JSmol)	Interactive image;
PubChem CID	14991098;
	InChI InChI=1S/C19H16O9/c1-6-4-9(25-3)8(5-20)15-10(6)17(22)27-14-7(2)13(21)11-12(16(14)26-15)19(24)28-18(11)23/h4,19-21,24H,5H2,1-3H3 Key: RXSMOJAAXFOGKM-UHFFFAOYSA-N;
	SMILES CC1=CC(=C(C2=C1C(=O)OC3=C(O2)C4=C(C(=C3C)O)C(=O)OC4O)CO)OC;
Properties
Chemical formula	C19H16O9
Molar mass	388.328 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

Cryptostictic acid is a chemical compound of the depsidone class. It has the molecular formula C₁₉H₁₆O₉ and is a secondary metabolite of various lichens. It was first reported in 1980 as a constituent of Lobaria oregana.^[1] It has since been identified in lichens in the genera Ramalina,^[2] Oxneriaria,^[3] and Usnea,^[4] among others.

References

^ Shimada (Née Miyoshi), Sachiko; Saitoh, Tamotsu; Sankawa, Ushio; Shibata, Shoji (1980). "New depsidones from Lobaria oregana". Phytochemistry. 19 (2): 328–330. Bibcode:1980PChem..19..328S. doi:10.1016/S0031-9422(00)81987-1.
^ Parrot, Delphine; Jan, Saleem; Baert, Nicolas; Guyot, Sylvain; Tomasi, Sophie (2013). "Comparative metabolite profiling and chemical study of Ramalina siliquosa complex using LC–ESI-MS/MS approach". Phytochemistry. 89: 114–124. Bibcode:2013PChem..89..114P. doi:10.1016/j.phytochem.2013.02.002. PMID 23489575.
^ Zulfiqar, Rizwana; Asghar, Hafiza Simab; Habib, Kamran; Khalid, Abdul Nasir (2023). "Two new species of the genus Oxneriaria (Lichenized Ascomycota: Megasporaceae) from Pakistan". Plant Systematics and Evolution. 309 (1): 2. Bibcode:2023PSyEv.309....2Z. doi:10.1007/s00606-022-01836-w.
^ Lohézic-Le Dévéhat, Françoise; Tomasi, Sophie; Elix, John A.; Bernard, Aurélie; Rouaud, Isabelle; Uriac, Philippe; Boustie, Joël (2007). "Stictic Acid Derivatives from the Lichen Usnea articulata and Their Antioxidant Activities". Journal of Natural Products. 70 (7): 1218–1220. doi:10.1021/np070145k.

[1] Shimada (Née Miyoshi), Sachiko; Saitoh, Tamotsu; Sankawa, Ushio; Shibata, Shoji (1980). "New depsidones from Lobaria oregana". Phytochemistry. 19 (2): 328–330. Bibcode:1980PChem..19..328S. doi:10.1016/S0031-9422(00)81987-1.

[2] Parrot, Delphine; Jan, Saleem; Baert, Nicolas; Guyot, Sylvain; Tomasi, Sophie (2013). "Comparative metabolite profiling and chemical study of Ramalina siliquosa complex using LC–ESI-MS/MS approach". Phytochemistry. 89: 114–124. Bibcode:2013PChem..89..114P. doi:10.1016/j.phytochem.2013.02.002. PMID 23489575.

[3] Zulfiqar, Rizwana; Asghar, Hafiza Simab; Habib, Kamran; Khalid, Abdul Nasir (2023). "Two new species of the genus Oxneriaria (Lichenized Ascomycota: Megasporaceae) from Pakistan". Plant Systematics and Evolution. 309 (1): 2. Bibcode:2023PSyEv.309....2Z. doi:10.1007/s00606-022-01836-w.

[4] Lohézic-Le Dévéhat, Françoise; Tomasi, Sophie; Elix, John A.; Bernard, Aurélie; Rouaud, Isabelle; Uriac, Philippe; Boustie, Joël (2007). "Stictic Acid Derivatives from the Lichen Usnea articulata and Their Antioxidant Activities". Journal of Natural Products. 70 (7): 1218–1220. doi:10.1021/np070145k.

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