CGP-7930

Synthesis

The chemical synthesis has been described: Starting material: Product of first step:

2,6-Di-tert-butylphenol is treated with formaldehyde, base and methanol to give [87-97-8] (2). Base catalyzed reaction with isobutaldehyde gives CGP-13501 (3). Hydride reduction of the aldehyde gives the primary alcohol.

According to Krysin (Russia), 2,6-Di-tert-butylphenol is reacted with Neopentyl glycol with lye in an autoclave. Although 1 step reaction, yield was quoted as merely 15%.

References

References

1. (November 2001). "Positive allosteric modulation of native and recombinant gamma-aminobutyric acid(B) receptors by 2,6-Di-tert-butyl-4-(3-hydroxy-2,2-dimethyl-propyl)-phenol (CGP7930) and its aldehyde analog CGP13501". Molecular Pharmacology.
2. (July 2004). "The heptahelical domain of GABA(B2) is activated directly by CGP7930, a positive allosteric modulator of the GABA(B) receptor". The Journal of Biological Chemistry.
3. (June 2006). "Differential modulation by the GABAB receptor allosteric potentiator 2,6-di-tert-butyl-4-(3-hydroxy-2,2-dimethylpropyl)-phenol (CGP7930) of synaptic transmission in the rat hippocampal CA1 area". The Journal of Pharmacology and Experimental Therapeutics.
4. "CGP7930: a positive allosteric modulator of the GABAB receptor". CNS Drug Reviews.
5. "CGP7930 - An allosteric modulator of GABABRs, GABAARs and inwardly-rectifying potassium channels". Neuropharmacology. (July 2023). link
6. "Effects of GABAB receptor ligands in animal tests of depression and anxiety". Pharmacological Reports.
7. (April 2008). "Evaluation of the anxiolytic-like profile of the GABAB receptor positive modulator CGP7930 in rodents". Neuropharmacology.
8. (November 2004). "In vivo effectiveness of CGP7930, a positive allosteric modulator of the GABAB receptor". European Journal of Pharmacology.
9. (September 2008). "The CGP7930 analogue 2,6-di-tert-butyl-4-(3-hydroxy-2-spiropentylpropyl)-phenol (BSPP) potentiates baclofen action at GABA(B) autoreceptors". Clinical and Experimental Pharmacology & Physiology.
10. (April 2006). "The GABA(B) receptor allosteric modulator CGP7930, like baclofen, reduces operant self-administration of ethanol in alcohol-preferring rats". Neuropharmacology.
11. (November 2007). "Effects of GABA(B) receptor antagonist, agonists and allosteric positive modulator on the cocaine-induced self-administration and drug discrimination". European Journal of Pharmacology.
12. Ong, J., Kerr, D. I. B. (September 2005). "Clinical Potential of GABA B Receptor Modulators". CNS Drug Reviews. 11 (3): 317–334. doi:10.1111/j.1527-3458.2005.tb00049.x.
13. Kerr, David I. B.; Khalafy, Jabbar; Ong, Jennifer; Perkins, Michael V.; Prager, Rolf H.; Puspawati, Ni Made; Rimaz, Mehdi (2006). "Synthesis and Biological Activity of Allosteric Modulators of GABABReceptors, Part 2. 3-(2,6-Bis-tert-butyl-4-hydroxyphenyl)propanols". Australian Journal of Chemistry. 59 (7): 457. doi:10.1071/CH06164.
14. Richard Henry Kline, EP0027426 (1983 to The Goodyear Tire & Rubber Company).
15. (November 1957). "Reactions of Hindered Phenols. I. Reactions of 4,4’-Dihydroxy-3,5,3’,5’-tetra-tert-butyl Diphenylmethane *". The Journal of Organic Chemistry.
16. (February 2013). "Single crystal X-ray structure of 2,6-di-tert-butyl-4-(3-(4-chlorophenyl)-4-methyl-4,5-dihydroisoxazol-5-yl)phenol 1,4-dioxane hemisolvate". Journal of Structural Chemistry.
17. Krysin, A. P.; Pustovskikh, I. I.; Koptyug, V. A. (2010). "Synthesis of 4-(ω-hydroxyalkyl)-2,6-di-tert-butylphenols and the properties of related sulfides". Russian Journal of General Chemistry. 80 (10): 2001–2006. doi:10.1134/S1070363210100208.