Dopamine Receptor Ligands. Part 18: Modification of the Structural Skeleton of Indolobenzazecine-Type Dopamine Receptor Antagonists
摘要:
On the basis of the D(1/5)-selective dopamine antagonist LE 300 (1), an indolo[3,2-f]benzazecine derivative, we changed the annulation pattern of the heterocycles. The target compounds represent novel heterocyclic ring systems. The most constrained indolo[4,3a,3-ef]benzazecine 2 was inactive, but the indolo[4,3a,3-fg]benzazacycloundecene 3 showed antagonistic properties (functional Ca(2+) assay) with nanomolar affinities (radioligand binding) for all dopamine receptor subtypes, whereas the indolo[2,3-f]benzazecine 4 displayed a selectivity profile similar to 3 but with decreased affinities.
Dopamine Receptor Ligands. Part 18: Modification of the Structural Skeleton of Indolobenzazecine-Type Dopamine Receptor Antagonists
摘要:
On the basis of the D(1/5)-selective dopamine antagonist LE 300 (1), an indolo[3,2-f]benzazecine derivative, we changed the annulation pattern of the heterocycles. The target compounds represent novel heterocyclic ring systems. The most constrained indolo[4,3a,3-ef]benzazecine 2 was inactive, but the indolo[4,3a,3-fg]benzazacycloundecene 3 showed antagonistic properties (functional Ca(2+) assay) with nanomolar affinities (radioligand binding) for all dopamine receptor subtypes, whereas the indolo[2,3-f]benzazecine 4 displayed a selectivity profile similar to 3 but with decreased affinities.
Dopamine Receptor Ligands. Part 18: Modification of the Structural Skeleton of Indolobenzazecine-Type Dopamine Receptor Antagonists
作者:Dina Robaa、Christoph Enzensperger、Shams El Din Abul Azm、El Sayeda El Khawass、Ola El Sayed、Jochen Lehmann
DOI:10.1021/jm901291r
日期:2010.3.25
On the basis of the D(1/5)-selective dopamine antagonist LE 300 (1), an indolo[3,2-f]benzazecine derivative, we changed the annulation pattern of the heterocycles. The target compounds represent novel heterocyclic ring systems. The most constrained indolo[4,3a,3-ef]benzazecine 2 was inactive, but the indolo[4,3a,3-fg]benzazacycloundecene 3 showed antagonistic properties (functional Ca(2+) assay) with nanomolar affinities (radioligand binding) for all dopamine receptor subtypes, whereas the indolo[2,3-f]benzazecine 4 displayed a selectivity profile similar to 3 but with decreased affinities.