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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

4-[(Alkylamino)methyl]furo[3,2-c]pyridines: a new series of selective kappa-receptor agonists.

The synthesis of 5-(arylacetyl)-4-[(alkylamino)methyl]furo[3,2-c] pyridines (16-23, 26, 27) and their activities as kappa-opioid receptor agonists are described. kappa-Agonist potency was particularly sensitive to the nature of the basic moiety. In particular, in the rabbit vas deferens (kappa-specific tissue), the 3-pyrrolidinol analogue 17 (IC50 = 2.7 nM) was found to be approximately 5-fold more potent than the corresponding pyrrolidine analogue 16 (IC50 = 15 nM). In the rat and hamster vasa deferentia (mu-specific and delta-specific tissues, respectively), 17 showed only weak antagonist activity (pKB > 5.5), underlining its selectivity for the kappa-opioid receptor. The major activity for 17 is resident in the 4S,3'S-isomer 26 (rabbit vas deferens IC50 = 1.1 nM). Compound 26 displays excellent antinociceptive activity, as determined in the mouse acetylcholine-induced abdominal constriction test (ED50 = 0.001 mg/kg, sc).[1]

References

  1. 4-[(Alkylamino)methyl]furo[3,2-c]pyridines: a new series of selective kappa-receptor agonists. Naylor, A., Judd, D.B., Scopes, D.I., Hayes, A.G., Birch, P.J. J. Med. Chem. (1994) [Pubmed]
 
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