Ellipticine

Ellipticine
Names
IUPAC name
5,11-dimethyl-6H-pyrido[4,3-b]carbazole
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.007.514
EC Number 208-264-0
KEGG
UNII
Properties
C17H14N2
Molar mass 246.313 g/mol[1]
Appearance Yellow solid[2]
Density 1.257±0.06 g/cm3[3]
Melting point 316–318 °C (601–604 °F; 589–591 K)[3]
Very low[4]
Hazards
GHS pictograms [1]
H301[1]
P264, P270, P301+310, P321, P330, P405, P501[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Ellipticine is an alkaloid first extracted from trees of the species Ochrosia elliptica and Rauvolfia sandwicensis,[5][6] which inhibits the enzyme topoisomerase II via intercalative binding to DNA.[7]

Natural occurrence and synthesis

Ellipticine is an organic compound present in several trees within the genera Ochrosia, Rauvolfia, Aspidosperma, and Apocynaceae.[8] It was first isolated from Ochrosia elliptica Labill., a flowering tree native to Australia and New Caledonia which gives the alkaloid its name, in 1959,[5] and synthesised by Robert Burns Woodward later the same year.[6]

Biological activity

Ellipticine is a known intercalator, capable of entering a DNA strand between base pairs. In its intercalated state, ellipticine binds strongly[9] and lies parallel to the base pairs,[10] increasing the superhelical density of the DNA.[11] Intercalated ellipticine binds directly to topoisomerase II, an enzyme involved in DNA replication,[12] inhibiting the enzyme and resulting in powerful antitumour activity.[10] In clinical trials, ellipticine has been observed to induce remission of tumour growth, but it is not used for medical purposes due to its high toxicity; side effects include nausea and vomiting, hypertension, cramp, pronounced fatigue, mouth dryness, and mycosis of the tongue and oesophagus.[13]

Further DNA damage results from the formation of covalent DNA adducts following enzymatic activation of ellipticine by with cytochromes P450 and peroxidases, meaning that ellipticine is classified as a prodrug.[14]

References

  1. 1 2 3 4 "Ellipticine | C17H14N2 - PubChem". PubChem. 2016. Retrieved 2017-05-30.
  2. ↑ Miller, R B; Dugar, S (1989). "A regiospecific total synthesis of ellipticine via nitrene insertion". Tetrahedron Letters. 30 (3): 297–300. ISSN 0040-4039. doi:10.1016/S0040-4039(00)95184-0.
  3. 1 2 "Ellipticine | 519-23-3". ChemicalBook. 2016. Retrieved 2017-05-30.
  4. ↑ Sbai, M; Ait Lyazidi, S; Lerner, D A; del Castillo, B; Martin, M A (1996). "Use of micellar media for the fluorimetric determination of ellipticine in aqueous solutions". Journal of Pharmaceutical and Biomedical Analysis. 14 (8): 959–965. ISSN 0731-7085. doi:10.1016/S0731-7085(96)01759-1.
  5. 1 2 Goodwin, S; Smith, A F; Horning, E C (1959). "Alkaloids of Ochrosia elliptica Labill.". Journal of the American Chemical Society. 81 (8): 1903–1908.
  6. 1 2 Woodward, R B; Iacobucci, G A; Hochstein, I A (1959). "The synthesis of ellipticine". Journal of the American Chemical Society. 81 (16): 4434–4435. ISSN 0002-7863. doi:10.1021/ja01525a085.
  7. ↑ Auclair, C (1987). "Multimodal action of antitumor agents on DNA: The ellipticine series". Archives of Biochemistry and Biophysics. 259 (1): 1–14. ISSN 0003-9861. doi:10.1016/0003-9861(87)90463-2.
  8. ↑ Isah, T (2016). "Anticancer Alkaloids from Trees: Development into Drugs". Pharmacognosy Reviews. 10 (20): 90–99. ISSN 0973-7847. PMC 5214563 Freely accessible. PMID 28082790. doi:10.4103/0973-7847.194047.
  9. ↑ Kohn, K W; Waring, M J; Glaubiger, D; Friedman, C A (1975). "Intercalative Binding of Ellipticine to DNA". Cancer Research. 35 (1): 71–76. ISSN 0008-5472. PMID 1109798.
  10. 1 2 Canals, A; Purciolas, M; Aymamí, J; Coll, M (2005). "The anticancer agent ellipticine unwinds DNA by intercalative binding in an orientation parallel to base pairs". Acta Crystallographica D. 61 (7): 1009–1012. ISSN 0907-4449. doi:10.1107/S0907444905015404.
  11. ↑ Chu, Y; Hsu, M T (1992). "Ellipticine increases the superhelical density of intracellular SV40 DNA by intercalation". Nucleic Acids Research. 20 (15): 4033–4038. ISSN 0305-1048. PMC 334084 Freely accessible. PMID 1324474.
  12. ↑ Froelich-Ammon, S J; Patchan, M W; Osheroff, N; Thompson, R B (1995). "Topoisomerase II binds to ellipticine in the absence or presence of DNA. Characterization of enzyme-drug interactions by fluorescence spectroscopy". Journal of Biological Chemistry. 270 (25): 14998–15004. ISSN 0021-9258. PMID 7797481.
  13. ↑ Paoletti, C; Le Pecq, J B; Dat-Xuong, N; Juret, P; Garnier, H; Amiel, J L; Rouesse, J (1980). "Antitumor activity, pharmacology, and toxicity of ellipticines, ellipticinium, and 9-hydroxy derivatives: preliminary clinical trials of 2-methyl-9-hydroxy ellipticinium (NSC 264-137)". Recent Results in Cancer Research. 74: 107–123. ISSN 0080-0015. PMID 7003658.
  14. ↑ Stiborová, M; Poljaková, J; Martínková, E; Ulrichová, J; Šimánek, V; Dvořák, Z; Frei, E (2012). "Ellipticine oxidation and DNA adduct formation in human hepatocytes is catalyzed by human cytochromes P450 and enhanced by cytochrome b5". Toxicology. 302 (2–3): 233–241. ISSN 0300-483X. doi:10.1016/j.tox.2012.08.004.
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