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Amentoflavone

Amentoflavone
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IUPAC name
8-[5-(5,7-Dihydroxy-4-oxo-chromen-2-yl)-2-hydroxy-phenyl]-5,7-dihydroxy-2-(4-hydroxyphenyl)chromen-4-one
Other names
Didemethyl-ginkgetin
3′,8′′-Biapigenin
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1617-53-4 7pxY
ChEMBL ChEMBL63354 7pxY
ChemSpider 4444919 7pxY
Jmol-3D images Image
PubChem Template:Chembox PubChem/format
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C30H18O10
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Amentoflavone

Amentoflavone is a biflavonoid (bis-apigenin coupled at 8 and 3' positions, or 3′,8′′-Biapigenin) constituent of a number of plants including Ginkgo biloba, Chamaecyparis obtusa (hinoki), Hypericum perforatum (St. John’s Wort)[1] and Xerophyta plicata.[2]

Amentoflavone can interact with many medications by being a potent inhibitor of CYP3A4 and CYP2C9, which are enzymes responsible for the metabolism of some drugs in the body.[3] It is also an inhibitor of human cathepsin B.[1]

Amentoflavone has a variety of in vitro activities including antimalarial activity,[4] anticancer activity (which may, at least in part, be mediated by its inhibition of fatty acid synthase),[5][6][7] and antagonist activity at the κ-opioid receptor (Ke = 490 nM)[8] as well as activity at the allosteric benzodiazepine site of the GABAA receptor as a negative allosteric modulator.[9]

See also

References

  1. ↑ 1.0 1.1 Pan X, Tan N, Zeng G, Zhang Y, Jia R (October 2005). "Amentoflavone and its derivatives as novel natural inhibitors of human Cathepsin B". Bioorg. Med. Chem. 13 (20): 5819–25. PMID 16084098. doi:10.1016/j.bmc.2005.05.071. 
  2. ↑ Williams, Christine A.; Harborne, Jeffrey B.; Tomas-Barberan A., Francisco (1987). "Biflavonoids in the primitive monocots Isophysis tasmanica and Xerophyta plicata". Phytochemistry 26 (9): 2553. doi:10.1016/S0031-9422(00)83875-3. 
  3. ↑ Kimura, Y; Ito, H; Ohnishi, R; Hatano, T (January 2010). "Inhibitory effects of polyphenols on human cytochrome P450 3A4 and 2C9 activity". Food Chemistry Toxicology 48 (1): 429–35. PMID 19883715. doi:10.1016/j.fct.2009.10.041. 
  4. ↑ "Inhibitors of Plasmodium falciparum M1- Family Alanyl Aminopeptidase (M1AAP)". 
  5. ↑ Lee, JS; Lee, MS; Oh, WK; Sul, JY (August 2009). "Fatty acid synthase inhibition by amentoflavone induces apoptosis and antiproliferation in human breast cancer cells" (PDF). Biological & Pharmaceutical Bulletin 32 (8): 1427–1432. PMID 19652385. doi:10.1248/bpb.32.1427. 
  6. ↑ Wilsky, S; Sobotta, K; Wiesener, N; Pilas, J; Althof, N; Munder, T; Wutzler, P; Henke, A (February 2012). "Inhibition of fatty acid synthase by amentoflavone reduces coxsackievirus B3 replication". Archives of Virology 157 (2): 259–269. PMID 22075919. doi:10.1007/s00705-011-1164-z. 
  7. ↑ Lee, JS; Sul, JY; Park, JB; Lee, MS; Cha, EY; Song, IS; Kim, JR; Chang, ES (May 2013). "Fatty Acid Synthase Inhibition by Amentoflavone Suppresses HER2/neu(erbB2) Oncogene in SKBR3 Human Breast Cancer Cells". Phytotherapy Research 27 (5): 713–720. PMID 22767439. doi:10.1002/ptr.4778. 
  8. ↑ Katavic PL, Lamb K, Navarro H, Prisinzano TE. (August 2007). "Flavonoids as opioid receptor ligands: identification and preliminary structure-activity relationships". J Nat Prod. 70 (8): 1278–82. PMC 2265593. PMID 17685652. doi:10.1021/np070194x. 
  9. ↑ Hanrahan, JR; Chebib, M; Davucheron, NL; Hall, BJ; Johnston, GA (2003). "Semisynthetic preparation of amentoflavone: A negative modulator at GABA(A) receptors". Bioorganic & Medicinal Chemistry Letters 13 (14): 2281–4. PMID 12824018. doi:10.1016/s0960-894x(03)00434-7. 


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