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Emodin
Skeletal formula
Ball-and-stick model
Names
Preferred IUPAC name
1,3,8-Trihydroxy-6-methylanthracene-9,10-dione
Other names
6-Methyl-1,3,8-trihydroxyanthraquinone
Identifiers
3D model ( JSmol)
ChEBI
ChEMBL
ChemSpider
DrugBank
ECHA InfoCard 100.007.509 Edit this at Wikidata
KEGG
PubChem CID
UNII
  • InChI=1S/C15H10O5/c1-6-2-8-12(10(17)3-6)15(20)13-9(14(8)19)4-7(16)5-11(13)18/h2-5,16-18H,1H3 checkY
    Key: RHMXXJGYXNZAPX-UHFFFAOYSA-N checkY
  • InChI=1/C15H10O5/c1-6-2-8-12(10(17)3-6)15(20)13-9(14(8)19)4-7(16)5-11(13)18/h2-5,16-18H,1H3
    Key: RHMXXJGYXNZAPX-UHFFFAOYAD
  • O=C2c1cc(cc(O)c1C(=O)c3c2cc(O)cc3O)C
Properties
C15H10O5
Molar mass 270.240 g·mol−1
Appearance Orange solid
Density 1.583±0.06 g/cm3
Melting point 256 to 257 °C (493 to 495 °F; 529 to 530 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY  verify ( what is checkY☒N ?)

Emodin (6-methyl-1,3,8-trihydroxyanthraquinone) is a chemical compound, of the anthraquinone family, that can be isolated from rhubarb, buckthorn, and Japanese knotweed ( Reynoutria japonica syn. Polygonum cuspidatum). [1] Emodin is particularly abundant in the roots of the Chinese rhubarb ( Rheum palmatum), knotweed and knotgrass ( Polygonum cuspidatum and Polygonum multiflorum) as well as Hawaii ‘au‘auko‘i cassia seeds or coffee weed (Semen cassia). [2] It is specifically isolated from Rheum palmatum L. [3] It is also produced by many species of fungi, including members of the genera Aspergillus, Pyrenochaeta, and Pestalotiopsis, inter alia. The common name is derived from Rheum emodi, a taxonomic synonym of Rheum australe, (Himalayan rhubarb) and synonyms include emodol, frangula emodin, rheum emodin, 3-methyl-1,6,8-trihydroxyanthraquinone, Schüttgelb (Schuttgelb), and Persian Berry Lake. [4]

Pharmacology

Emodin is an active component of several plants used in traditional Chinese medicine (TCM) such as Rheum palmatum, Polygonum cuspidatum, and Polygonum multiflorum. It has various actions including laxative, antibacterial and antiinflammatory effects, [5] [6] and has also been identified as having potential antiviral activity against coronaviruses such as SARS-CoV-2, [7] [8] being one of the major active components of the antiviral TCM formulation Lianhua Qingwen. [9] [10]

A computational study was conducted to investigate the inhibition mechanism on the formation of the Spike-ACE2 protein complex. [2] Specifically, it is seen dose-dependent inhibition in the prevention of infection by SARS-CoV-1, evidence which has stimulated further investigations on SARS-CoV-2. [2]

Emodin has been shown to inhibit the ion channel of protein 3a, which could play a crucial role in the release of the virus from infected cells. [11]

List of species

The following plant species are known to produce emodin:

Emodin also occurs in variable amounts in members of the crustose lichen genus Catenarina. [28]

Compendial status

References

  1. ^ Dorland's Medical Dictionary (1938)
  2. ^ a b c Dellafiora L, Dorne JL, Galaverna G, Dall'Asta C (2020). "Preventing the Interaction between Coronaviruses Spike Protein and Angiotensin I Converting Enzyme 2: An in Silico Mechanistic Case Study on Emodin as a Potential Model Compound". Applied Sciences. 10 (18): 6358. doi: 10.3390/app10186358. S2CID  224994102.
  3. ^ Tsay HS, Shyur LF, Agrawal DC, Wu YC, Wang SY (3 November 2017). Medicinal Plants – Recent Advances in Research and Development. Singapore: Springer Singapore. p. 339. ISBN  978-981-10-5978-0.
  4. ^ CID 3220 from PubChem
  5. ^ Dong X, Fu J, Yin X, Cao S, Li X, Lin L, Ni J (August 2016). "Emodin: A Review of its Pharmacology, Toxicity and Pharmacokinetics". Phytotherapy Research. 30 (8): 1207–18. doi: 10.1002/ptr.5631. PMC  7168079. PMID  27188216.
  6. ^ Monisha BA, Kumar N, Tiku AB (2016). "Emodin and Its Role in Chronic Diseases". Anti-inflammatory Nutraceuticals and Chronic Diseases. Advances in Experimental Medicine and Biology. Vol. 928. pp. 47–73. doi: 10.1007/978-3-319-41334-1_3. ISBN  978-3-319-41332-7. PMID  27671812.
  7. ^ Ho TY, Wu SL, Chen JC, Li CC, Hsiang CY (May 2007). "Emodin blocks the SARS coronavirus spike protein and angiotensin-converting enzyme 2 interaction". Antiviral Research. 74 (2): 92–101. doi: 10.1016/j.antiviral.2006.04.014. PMC  7114332. PMID  16730806.
  8. ^ Zhou Y, Hou Y, Shen J, Huang Y, Martin W, Cheng F (2020). "Network-based drug repurposing for novel coronavirus 2019-nCoV/SARS-CoV-2". Cell Discovery. 6: 14. doi: 10.1038/s41421-020-0153-3. PMC  7073332. PMID  32194980.
  9. ^ Wang CH, Zhong Y, Zhang Y, Liu JP, Wang YF, Jia WN, et al. (February 2016). "A network analysis of the Chinese medicine Lianhua-Qingwen formula to identify its main effective components". Molecular BioSystems. 12 (2): 606–13. doi: 10.1039/c5mb00448a. PMID  26687282.
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  12. ^ Wang XL, Yu KB, Peng SL (June 2008). "[Chemical constituents of aerial part of Acalypha australis]" [Chemical Constituents of Aerial Part of Acalypha australis]. Zhongguo Zhong Yao Za Zhi = Zhongguo Zhongyao Zazhi = China Journal of Chinese Materia Medica (in Chinese). 33 (12): 1415–7. PMID  18837345.
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  15. ^ Kremer D, Kosalec I, Locatelli M, Epifano F, Genovese S, Carlucci G, Končić MZ (April 2012). "Anthraquinone profiles, antioxidant and antimicrobial properties of Frangula rupestris (Scop.) Schur and Frangula alnus Mill. bark". Food Chemistry. 131 (4): 1174–1180. doi: 10.1016/j.foodchem.2011.09.094.
  16. ^ Meselhy MR (August 2003). "Constituents from Moghat, the Roots of Glossostemon bruguieri (Desf.)". Molecules. 8 (8): 614–621. doi: 10.3390/80800614. PMC  6146927.
  17. ^ Wang G, Wang GK, Liu JS, Yu B, Wang F, Liu JK (April 2010). "[Studies on the chemical constituents of Kalimeris indica]" [Studies on the Chemical Constituents of Kalimeris indica]. Zhong Yao Cai = Zhongyaocai = Journal of Chinese Medicinal Materials (in Chinese). 33 (4): 551–4. PMID  20845783.
  18. ^ Chao PM, Kuo YH, Lin YS, Chen CH, Chen SW, Kuo YH (April 2010). "The metabolic benefits of Polygonum hypoleucum Ohwi in HepG2 cells and Wistar rats under lipogenic stress" (PDF). Journal of Agricultural and Food Chemistry. 58 (8): 5174–80. doi: 10.1021/jf100046h. PMID  20230058.
  19. ^ "Reynoutria japonica (Polygonaceae)". Dr. Duke's Phytochemical and Ethnobotanical Databases. U.S. Department of Agriculture.
  20. ^ Ban SH, Kwon YR, Pandit S, Lee YS, Yi HK, Jeon JG (January 2010). "Effects of a bio-assay guided fraction from Polygonum cuspidatum root on the viability, acid production and glucosyltranferase of mutans streptococci". Fitoterapia. 81 (1): 30–4. doi: 10.1016/j.fitote.2009.06.019. PMID  19616082.
  21. ^ a b Sacerdote AB, King RB (2014). "Direct Effects of an Invasive European Buckthorn Metabolite on Embryo Survival and Development in Xenopus laevis and Pseudacris triseriata" (PDF). Journal of Herpetology. 48 (1): 51–58. doi: 10.1670/12-066. S2CID  62818226.
  22. ^ Liu A, Chen H, Wei W, Ye S, Liao W, Gong J, et al. (July 2011). "Antiproliferative and antimetastatic effects of emodin on human pancreatic cancer". Oncology Reports. 26 (1): 81–9. doi: 10.3892/or.2011.1257. PMID  21491088.
  23. ^ Gautam R, Karkhile KV, Bhutani KK, Jachak SM (October 2010). "Anti-inflammatory, cyclooxygenase (COX)-2, COX-1 inhibitory, and free radical scavenging effects of Rumex nepalensis". Planta Medica. 76 (14): 1564–9. doi: 10.1055/s-0030-1249779. PMID  20379952. S2CID  260253513.
  24. ^ "Senna obtusifolia (Fabaceae)". Dr. Duke's Phytochemical and Ethnobotanical Databases. U.S. Department of Agriculture.
  25. ^ Yang YC, Lim MY, Lee HS (December 2003). "Emodin isolated from Cassia obtusifolia (Leguminosae) seed shows larvicidal activity against three mosquito species". Journal of Agricultural and Food Chemistry. 51 (26): 7629–31. doi: 10.1021/jf034727t. PMID  14664519.
  26. ^ Kusari S, Zühlke S, Kosuth J, Cellárová E, Spiteller M (October 2009). "Light-independent metabolomics of endophytic Thielavia subthermophila provides insight into microbial hypericin biosynthesis". Journal of Natural Products. 72 (10): 1825–35. doi: 10.1021/np9002977. PMID  19746917.
  27. ^ Ghosh S, Das Sarma M, Patra A, Hazra B (September 2010). "Anti-inflammatory and anticancer compounds isolated from Ventilago madraspatana Gaertn., Rubia cordifolia Linn. and Lantana camara Linn". The Journal of Pharmacy and Pharmacology. 62 (9): 1158–66. doi: 10.1111/j.2042-7158.2010.01151.x. PMID  20796195. S2CID  25769269.
  28. ^ Søchting U, Søgaard MZ, Elix JA, Arup U, Elvebakk A, sancho LG (2014). "Catenarina (Teloschistaceae, Ascomycota), a new Southern Hemisphere genus with 7-chlorocatenarin". The Lichenologist. 46 (2): 175–187. doi: 10.1017/s002428291300087x. S2CID  83906534.
  29. ^ The British Pharmacopoeia Secretariat (2009). "Index, BP 2009" (PDF). Archived from the original (PDF) on 11 April 2009. Retrieved 20 April 2010.