Halomon

Halomon
IUPAC name (3S,6R)-6-Bromo-3-(bromomethyl)- 2,3,7-trichloro-7-methyl-1-octene
Other names (-)-Halomon
Identifiers
CAS number	142439-86-9
PubChem	132430
ChemSpider	116941 Y
ChEMBL	CHEMBL136685 Y
Jmol-3D images	Image 1
SMILES Cl[C@](C(Cl)=C)(CC[C@@H](Br)C(Cl)(C)C)CBr
InChI InChI=1S/C10H15Br2Cl3/c1-7(13)10(15,6-11)5-4-8(12)9(2,3)14/h8H,1,4-6H2,2-3H3/t8-,10-/m1/s1 Y Key: OVLCIYBVQSJPKK-PSASIEDQSA-N Y InChI=1/C10H15Br2Cl3/c1-7(13)10(15,6-11)5-4-8(12)9(2,3)14/h8H,1,4-6H2,2-3H3/t8-,10-/m1/s1 Key: OVLCIYBVQSJPKK-PSASIEDQBC
Properties
Molecular formula	C10H15Br2Cl3
Molar mass	401.3931 g/mol
Density	1.824 g/cm3
Melting point	56-57 °C
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Halomon is a polyhalogenated monoterpene first isolated from the marine red algae Portieria hornemannii.^[1][2] Halomon has attracted research interest because of its promising profile of selective cytotoxicity that suggests its potential use as an antitumor agent.^[3]

Halomon is in a class of chemical compounds known as halocarbons, which are often potent alkylating agents which may be toxic to individual cells or to living organisms. The red algae that naturally produce halomon and other related compounds probably do so as a poisonous defense against fish or other marine life that may see it as a potential source of food. Halomon, however, is a selective toxin; studies at the National Cancer Institute have indicated that it is more toxic to certain types of tumor cells than to other cells.^[1]

The natural algal source of halomon is difficult to locate, identify, and collect and the concentration of halomon in the alga is low. Therefore, obtaining a sufficient amount of halomon to conduct preclinical research has been difficult. Consequently, there has been active interest in developing synthetic methods in the laboratory for the preparation of halomon and related compounds.^[4][5][6]

Recent research has shown that halomon and a related halogenated monoterpene are inhibitors of the enzyme DNA methyltransferase, suggesting a possible mechanism of action for the pharmacological effects.^[7]

References

1. ^ ^{a b} Fuller, Richard W.; Cardellina, John H., II; Kato, Yoko; Brinen, Linda S.; Clardy, Jon; Snader, Kenneth M.; Boyd, Michael R. (1992). "A pentahalogenated monoterpene from the red alga Portieria hornemannii produces a novel cytotoxicity profile against a diverse panel of human tumor cell lines". Journal of Medicinal Chemistry 35 (16): 3007–3011. doi:10.1021/jm00094a012. PMID 1501227. 
2. ^ Fuller, Richard W.; Cardellina, John H., II; Jurek, Jaroslaw; Scheuer, Paul J.; Alvarado-Lindner, Belinda; McGuire, Mary; Gray, Glenn N.; Steiner, Jorge Rios; Clardy, Jon; et al. (1994). "Isolation and Structure/Activity Features of Halomon-Related Antitumor Monoterpenes from the Red Alga Portieria hornemannii". Journal of Medicinal Chemistry 37 (25): 4407–4411. doi:10.1021/jm00051a019. PMID 7996553. 
3. ^ Egorin, Merrill J.; Sentz, Dorothy L.; Rosen, D. Marc; Ballesteros, Michael F.; Kearns, Christine M.; Callery, Patrick S.; Eiseman, Julie L. (1996). "Plasma pharmacokinetics, bioavailability, and tissue distribution in CD2F1 mice of halomon, an antitumor halogenated monoterpene isolated from the red algae Portieria hornemannii". Cancer Chemotherapy and Pharmacology 39 (1/2): 51–60. doi:10.1007/s002800050537. 
4. ^ Schlama, Thierry; Baati, Rachhid; Gouveneur, Veronique; Valleix, Alain; Flack, John R.; Mioskowski, Charles (1998). "Total synthesis of (± )-halomon by a Johnson-Claisen rearrangement". Angewandte Chemie, International Edition 37 (15): 2085–2087. doi:10.1002/(SICI)1521-3773(19980817)37:15<2085::AID-ANIE2085>3.0.CO;2-J. 
5. ^ Michael E. Jung, Michael H. Parker (1997). "Synthesis of Several Naturally Occurring Polyhalogenated Monoterpenes of the Halomon Class". Journal of Organic Chemistry 62 (21): 7094–7095. doi:10.1021/jo971371. PMID 11671809. 
6. ^ Sotokawa, Takayuki; Noda, Takeshi; Pi, Sun; Hirama, Masahiro (2000). "A three-step synthesis of halomon". Angewandte Chemie 39 (19): 3430–3432. doi:10.1002/1521-3773(20001002)39:19<3430::AID-ANIE3430>3.0.CO;2-3. PMID 11091378. 
7. ^ Andrianasolo, Eric H.; France, Dennis; Cornell-Kennon, Susan; Gerwick, William H. (2006). "DNA Methyl Transferase Inhibiting Halogenated Monoterpenes from the Madagascar Red Marine Alga Portieria hornemannii". Journal of Natural Products 69 (4): 576–579. doi:10.1021/np0503956. PMID 16643029. 

External links

• Halomon at Reciprocal Net
• Halomon at Harvard University's ChemBank