Synthesis and in vivo evaluation of bicyclic gababutins

Synthesis of a number of bicyclic five-membered ring derivatives of gabapentin led to the identification of two compounds, (-)-(11A) and (20A) which both had an excellent level of potency against alpha(2)delta and were pro. led in an in vivo model of neuropathic pain. (C) 2009 Elsevier Ltd. All rights reserved.