Structure−Activity Relationships of Pregabalin and Analogues That Target the α<sub>2</sub>-δ Protein
作者:Thomas R. Belliotti、Thomas Capiris、I. Victor Ekhato、Jack J. Kinsora、Mark J. Field、Thomas G. Heffner、Leonard T. Meltzer、Jacob B. Schwarz、Charles P. Taylor、Andrew J. Thorpe、Mark G. Vartanian、Lawrence D. Wise、Ti Zhi-Su、Mark L. Weber、David J. Wustrow
DOI:10.1021/jm049762l
日期:2005.4.1
Pregabalin exhibits robust activity in preclinical assays indicative of potential antiepileptic, anxiolytic, and antihyperalgesic clinical efficacy. It binds with high affinity to the alpha(2)-delta subunit of voltage-gated calcium channels and is a substrate of the system L neutral amino acid transporter. A series of pregabalin analogues were prepared and evaluated for their alpha(2)-delta binding affinity as demonstrated by their ability to inhibit binding of [H-3]gabapentin to pig brain membranes and for their potency to inhibit the uptake of [H-3]leucine into CHO cells, a measure of their ability to compete with the endogenous substrate at the system L transporter. Compounds were also assessed in vivo for their ability to promote anxiolytic, analgesic, and anticonvulsant actions. These studies suggest that distinct structure activity relationships exist for alpha(2)-delta binding and system L transport inhibition. However, both interactions appear to play an important role in the in vivo profile of these compounds.