Synthesis of Analogues of GABA. XIV. Synthesis and Activity of Unsaturated Derivatives of 5-Aminopentanoic Acid (d-Aminovaleric Acid)

Abstract

The (Z) and (E) pairs of 5-aminopent-2-enoic acid and 5-aminopent-3- enoic acid, as well as the related 5-aminopent-3-ynoic acid, have been prepared for structure-activity studies on GABA receptors. Only the (Z) isomers were active as GABA agonists with (Z)-5-aminopent-2-enoic acid being two- to four-fold more active than 5-aminopentanoic acid.