644996-22-5Relevant articles and documents
iso-Lactam and reduced amide analogues of the peptidomimetic dopamine receptor modulator 3(R)-[(2(S)-Pyrrolidinylcarbonyl)amino]-2-oxo-1-pyrrolidineacetamide
Dolbeare, Kristine,Pontoriero, Giuseppe F.,Gupta, Suresh K.,Mishra, Ram K.,Johnson, Rodney L.
, p. 4103 - 4112 (2003)
An analogue of the highly potent γ-lactam Pro-Leu-Gly-NH2 peptidomimetic, 3(R)-[(2(S)-pyrrolidinylcarbonyl) amino]-2-oxo-1-pyrrolidineacetamide (2), 4(R)-[[2(S)-pyrrolidinylcarbonyl]amino]-2-oxo-1-pyrrolidineacetamide (3), in which the lactam carbonyl moiety has been placed in a different position with respect to the 3-amino group was synthesized. Also, a series of analogues of 2, compounds 4-6, were synthesized in which each of the amide bonds of 2 were systematically replaced with a reduced amide bond surrogate. The analogues were tested for their ability to enhance the binding of [ 3H]N-propylnorapomorphine to dopamine receptors in a functional in vitro assay utilizing bovine striatal membranes. Peptidomimetic 3 was shown to be more potent than 2, while 4 and 5 were significantly less effective than 2. Peptidomimetic 6 had a pharmacological profile similar to that of 2.
