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4,5,6, and 7-indole and indoline derivatives, their preparation and use

a technology of in which is applied in the field of 4, 5, 6, and 7indole and indoline derivatives, their preparation and, can solve the problems of patients withdrawing from treatment, ssri's and all other antidepressants currently available, and significant late onset of action, and achieve the effect of inhibiting the activity of potent serotonin

Inactive Publication Date: 2002-09-12
H LUNDBECK AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0016] It is the object of the present invention to provide compounds with potent serotonin reuptake inhibiting activity as well as antagonistic properties at 5-HT.sub.A receptors. Such compounds may be useful as fast onset of action medicaments for the treatment of affective disorders, such as depression.

Problems solved by technology

The side effects associated with first generation antidepressants are such that they cause some patients to withdraw from treatment.
SSRI's and all other antidepressants currently available suffer from a serious drawback in that several weeks of treatnent is necessary to produce the therapeutic effect.
The late onset of action is a significant problem, particularly in the treatment of patients with severe depression and suicide potential.
Further, one in three patients are not responsive to SSRI'S.

Method used

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  • 4,5,6, and 7-indole and indoline derivatives, their preparation and use
  • 4,5,6, and 7-indole and indoline derivatives, their preparation and use
  • 4,5,6, and 7-indole and indoline derivatives, their preparation and use

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0240] 1a. 1-(2-(3-Benzofuranyl)ethyl)-4-(1H-indol-4-yl)piperazine, oxalate

[0241] A mixture of 2-(3-benzofuranyl)acetic acid (0.95 g), 1-(1H-indol-4-yl)piperazine (1.3 g), and N,N-dicyclohexylcarbodiimide (1.3 g) in a mixture of dry tetrahydrofuran (50 mL) and dry dimethylformamide (10 mL) was stirred for 16 h at room temperature. Filtration and removal of solvent in vacuo gave an oil which was purified by flash chromatography (eluent: ethyl acetate / heptane / triethylamine 10:9:1) giving 1-(3-benzofuranyl)methylcarbonyl-4-(1H-indol-4-yl)piperazi- ne (0.5 g) as an oil.

[0242] The oil was dissolved in tetrahydrofuran (20 mL) and treated with a suspension of lithium aluminium hydride (0.26 g) in tetrahydrofuran (20 mL) at room temperature under a nitrogen atmosphere followed by reflux for 4 hours. The reaction mixture was cooled to 0.degree. C. and treated subsequently with water (1 mL), 15% aq. sodium hydroxide (0.5 mL), and water (2.5 mL). After stirring for 30 min the mixture was filte...

example 2

[0265] 2a. 1-(2-(6-Chloro-1H-indol-3-yl)ethyl)-4-(1H-indol-4-yl)piperazine- , oxalate

[0266] A solution of 6-chloro-1H-indole (15 g) in diethyl ether (300 mL) was cooled to 0.degree. C. and treated with a solution of oxalyl chloride (9.4 mL) in diethyl ether (30 mL). The mixture was stirred for 16 hours at room temperature. Filtration gave 2-(6-chloro-1H-indol-3-yl)-2-oxoacet- yl chloride as a crystalline material (15.5 g). A part of this product (2.5 g) was dissolved in dry tetrahydrofuran (25 mL) and added dropwise to a solution of 1-(1H-indol-4-yl)piperazine (1.4 g) and triethylamine (15 mL) in tetrahydrofuran (100 mL). After stirring for 16 hours the reaction mixture was concentrated in vacuo. The remaining oil was purified by flash chromatography (eluent: ethyl acetate / methanol / triethyl- amine 85:10:5) giving 1-(2-(6-chloro-1H-indol-3-yl)-1,2-dioxoethyl)-4-(1H-- indol-4-yl)piperazine (1.6 g) as a crystalline material. This product was suspended in tetrahydrofuran (25 mL) and add...

example 3

[0302] 3a, 1-(2-(5-Fluoro-1H-indol-3-yl)ethyl)-4-(6-hydroxymethyl-1H-indol- -4-yl)piperazine

[0303] A solution of 1-(2-(5-fluoro-1H-indol-3-yl)-I,2-dioxoethyl)-4-(6-me- thoxycarbonyl-1H-indol-4-yl)piperazine (1.8 g, prepared from 2-(5-fluoro-1H-indol-3-yl)-2-oxoacetyl chloride and 1-(6-methoxycarbonyl-1H-indol-4-yl)piperazine by the procedure described in Example 2) in tetrahydrofuran (50 mL) was added dropwise to a suspension of lithium aluminium hydride (1.7 g) in tetrahydrofuran (125 mL) at room temperature followed by reflux for 4 hours. The reaction mixture was cooled to 5.degree. C. followed by subsequent addition of water (3.4 mL), 15% aq. sodium hydroxide (1.7 mL), and water (8.5 mL). Filtration and removal of solvent in vacuo gave an oil which was purified by flash chromatography (eluent: ethyl acetate / methanol / triethylamine 85:10:5) giving the title product (0.9 g), which was crystallized from diisopropyl ether. Mp 198-200.degree. C. .sup.1H-NMR (DMSO-d.sub.6): 2.60-2.80 (m...

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Abstract

A substituted 4-, 5-, 6-, and 7-indole derivative of Formula (I) 1 wherein A is a group having formula (IIA), (IIB), (IIC) 2 wherein X, U, Y, R.sup.3 to R.sup.12, Z, W, n and m are as defined above. The compounds are potent serotonin reuptake inhibitors and have 5-HT.sub.1A receptor antagonistic activity.

Description

[0001] The present invention relates to novel 4, 5, 6 and 7-indole and indoline derivatives which are potent serotonin reuptake inhibitors, pharmaceutical compositions containing these compounds and the use thereof for the treatment of disorders or diseases responsive to the inhibition of serotonin re-uptake. The compounds of the invention also possess antagonistic activity at 5-HT.sub.1A receptors and are considered to be particularly useful for the treatment of depression.BACKGROUND[0002] Selective serotonin (or 5-HT) reuptake inhibitors (SSRI's) such as fluoxetine, paroxetine, sertraline, fluvoxamine and citalopram represent a major step forward in the treatment of depression because they have fewer and less severe side effects compared to first generation antidepressant (tricyclics and non-selective MAO inhibitors). The side effects associated with first generation antidepressants are such that they cause some patients to withdraw from treatment.[0003] SSRI's and all other antid...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C07D401/14C07D403/14C07D405/14C07D413/14
CPCC07D401/14C07D403/14C07D405/14C07D413/14A61P25/24
Inventor MOLTZEN, EJNER KNUDMIKKELSEN, IVANKROG-JENSEN, CHRISTIAN
Owner H LUNDBECK AS
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