57835-36-6Relevant articles and documents
Structural analogues of the natural products magnolol and honokiol as potent allosteric potentiators of GABAA receptors
Fuchs, Alexander,Baur, Roland,Schoeder, Clara,Sigel, Erwin,Müller, Christa E.
supporting information, p. 6908 - 6917 (2015/02/02)
Biphenylic compounds related to the natural products magnolol and 4′-O-methylhonokiol were synthesized, evaluated and optimized as positive allosteric modulators (PAMs) of GABAA receptors. The most efficacious compounds were the magnolol analog 5-ethyl-5′-hexylbiphenyl-2,2′-diol (45) and the honokiol analogs 4′-methoxy-5-propylbiphenyl-2-ol (61), 5-butyl-4′-methoxybiphenyl-2-ol (62) and 5-hexyl-4′-methoxybiphenyl-2-ol (64), which showed a most powerful potentiation of GABA-induced currents (up to 20-fold at a GABA concentration of 3 μM). They were found not to interfere with the allosteric sites occupied by known allosteric modulators, such as benzodiazepines and N-arachidonoylglycerol. These new PAMs will be useful as pharmacological tools and may have therapeutic potential for mono-therapy, or in combination, for example, with GABAA receptor agonists.