Brucine

Brucine is an alkaloid closely related to strychnine, primarily found in the seeds of the Strychnos nux-vomica tree, as well as in other species like Strychnos ignatii and Strychnos wallichiana [1][8]. It was discovered in 1819 by Pelletier and Caventou and has since been recognized for its various applications and toxicological properties.

Chemical Structure and Identification

Brucine's chemical formula is C23H26N2O4, and it is known for being a large chiral molecule. Its structure was fully understood after it was converted into the same molecule as strychnine by the chemist Hanssen in 1884, highlighting its close relationship with strychnine[1]. The chemical structure of brucine can be visualized through resources like ResearchGate, which provides a detailed depiction[4][19].

Applications

Chemical Applications

Due to its chiral nature, brucine has been utilized in stereospecific chemical syntheses and chiral resolution. It was the first natural product used as an organocatalyst in a reaction resulting in enantiomeric enrichment. Its applications extend to being used as a resolving agent, in HPLC as a stationary phase for selective binding of anionic enantiomers, and in fractional distillation for resolving dihydroxy fatty acids and diarylcarbinols[1].

Medical Applications

Brucine has demonstrated anti-tumor effects against hepatocellular carcinoma and breast cancer, though its narrow therapeutic window limits its clinical use. It is also employed in traditional Chinese medicine for its anti-inflammatory and analgesic properties and is found in some Ayurveda and homeopathy drugs[1][9]. Additionally, brucine has been explored for its potential in treating alcoholism by suppressing ethanol intake and preference in animal models[12].

Other Uses

Brucine serves as a denaturant for alcohol, making it unfit for human consumption[1].

Toxicology and Safety

Brucine's toxic effects are dose and route of administration dependent. It can cause severe convulsions, increased blood pressure, and even fatal poisoning at toxic doses. Its toxicity extends to the nervous, immune, urinary, and digestive systems, with serious central nervous system toxicity being a major obstacle to its clinical application. Brucine can also insert into the DNA double helix structure, interfering with DNA sequences[3]. Despite its medicinal properties, the presence of brucine and strychnine in nux vomica makes it unsafe for consumption, with even small amounts capable of causing serious side effects or death[13].

Conclusion

Brucine is a complex molecule with both beneficial and harmful properties. Its use in chemical syntheses, medicine, and as a denaturant highlights its versatility. However, its toxicological profile necessitates caution and further research to mitigate risks and explore its therapeutic potential safely.

Citations:

[1] https://en.wikipedia.org/wiki/Brucine

[2] https://www.sciencedirect.com/topics/pharmacology-toxicology-and-pharmaceutical-science/brucine

[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7145893/

[4] https://www.researchgate.net/figure/Chemical-structure-of-brucine-a-major-alkaloid-present-in-Strychnos-nux-vomica-seeds_fig7_262941737

[5] https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/brucine

[6] https://www.sciencedirect.com/science/article/pii/S2667031323000866

[7] https://academic.oup.com/jat/article-pdf/35/4/248/2307128/35-4-248.pdf

[8] https://pubchem.ncbi.nlm.nih.gov/compound/Brucine

[9] https://drugs.ncats.io/drug/6NG17YCK6H

[10] https://www.sciencedirect.com/topics/biochemistry-genetics-and-molecular-biology/brucine

[11] https://inchem.org/documents/pims/chemical/brucine.htm

[12] https://www.nature.com/articles/aps201428

[13] https://www.webmd.com/vitamins/ai/ingredientmono-58/nux-vomica

[14] https://www.researchgate.net/publication/340411864_Brucine_A_Review_of_Phytochemistry_Pharmacology_and_Toxicology

[15] https://www.spandidos-publications.com/10.3892/etm.2019.7582

[16] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3442185/

[17] https://www.drugfuture.com/chemdata/Brucine.html

[18] https://datasheets.scbt.com/sc-293963.pdf

[19] https://www.researchgate.net/figure/The-structure-of-brucine_fig1_340411864

[20] https://www.biosynth.com/p/Q-100426/357-57-3-brucine