Preparation and pharmacological characterization of trans-2-amino-5(6)-fluoro-6(5)-hydroxy-1-phenyl-2,3-dihydro-1H-indenes as D2-like dopamine receptor agonists.

Article Details

Citation

Di Stefano A, Sozio P, Cacciatore I, Cocco A, Giorgioni G, Costa B, Montali M, Lucacchini A, Martini C, Spoto G, Di Pietrantonio F, Di Matteo E, Pinnen F

Preparation and pharmacological characterization of trans-2-amino-5(6)-fluoro-6(5)-hydroxy-1-phenyl-2,3-dihydro-1H-indenes as D2-like dopamine receptor agonists.

J Med Chem. 2005 Apr 7;48(7):2646-54.

PubMed ID
15801855 [ View in PubMed
]
Abstract

The present work reports the synthesis of trans-2-amino-5(6)-fluoro-6(5)-hydroxy-1-phenyl-2,3-dihydro-1H-indenes (4a-f, 5a-f) as a continuation of our studies to better understand the significance of the halo substituent in the trans-1-phenyl-2-aminoindane series and to extend knowledge of the monophenolic ligands of DA receptors. The affinity of the new compounds and related methoxylated precursors (10-15 and 18-23) was estimated in vitro by displacement of [(3)H]SCH23390 (for D(1)-like receptors) or [(3)H]YM-09-151-2 (for D(2)-like receptors) from homogenates of porcine striatal membranes. The results indicate that unsubstituted amines 4a, 5a, 10, and 11 are poorly effective at DA receptors. The introduction of two n-propyl groups on the nitrogen atom (compounds 14, 15, 4c, and 5c) and N-allyl-N-methyl- or N-methyl-N-propyl- substitution (compounds 20-23, 4e, 4f, 5e, 5f) increased the D(2)-like affinities and selectivity. The D(2)-like agonistic activity of selected compounds 15, 20, 21, 4e, 5c, and 5e was proved by evaluating their effects on the cyclic guanosine monophosphate (cGMP) content in rat neostriatal membranes. All tested compounds displayed a potential dopamine D(2)-like agonist profile decreasing basal levels of cGMP. The selective D(2)-like agonism of compounds 20 and 5e was proved by their effects on basal striatal adenylyl cyclase activity.

DrugBank Data that Cites this Article

Binding Properties
DrugTargetPropertyMeasurementpHTemperature (°C)
DopamineDopamine D4 receptorKi (nM)3310N/AN/ADetails
DopamineDopamine D5 receptorKi (nM)2440N/AN/ADetails