T. Lehmann et al., Dopaminergic 7-aminotetrahydroindolizines: Ex-chiral pool synthesis and preferential D3 receptor binding, BIOORG MED, 11(21), 2001, pp. 2863-2866
Starting from both isomers of enantiopure asparagine, heterocyclic bioisost
eres of the preferential dopamine D3 receptor agonist (R)-7-OH-DPAT were in
vestigated when SAR studies led to the 3-formyl substituted aminoindolizine
(S)-1e (FAUC 54) displaying a K-i value of 6.0 nM for the high affinity D3
binding site. In contrast, D3 affinity of the enantiomer (R)-1e was 300 fo
ld lower. (C) 2001 Elsevier Science Ltd. All rights reserved.