- Design, synthesis, and biological evaluation of arylpiperazine-benzylpiperidines with dual serotonin and norepinephrine reuptake inhibitory activities
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The limitations of established serotonin (5-hydroxytryptamine, 5-HT) and norepinephrine (NE) reuptake inhibitors necessitate the development of safer and more effective therapeutic agents. Based on the structures of 4-benzylpiperidine carboxamides and trazodone, arylpiperazine-benzylpiperidines with chemical scaffolds different from those of marketed drugs were designed, synthesized, and evaluated for their neurotransmitter reuptake inhibitory activities. The majority of the synthesized compounds showed greater NE than 5-HT reuptake inhibition. The activities were even greater than those of the standard drug, venlafaxine hydrochloride were. The derivatives with a three-carbon linker showed better activities than the derivatives with a two-carbon linker. Among the newly synthesized compounds, 2d exhibited the strongest reuptake inhibition of the neurotransmitters (IC50 = 0.38 μM for NE and 1.18 μM for 5-HT). The biological activity data demonstrate that arylpiperazine-benzylpiperidines have the potential to be developed as a new class of therapeutic agents to treat neuropsychiatric and neurodegenerative disorders.
- Paudel, Suresh,Acharya, Srijan,Kim, Kyeong-Man,Cheon, Seung Hoon
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p. 2137 - 2145
(2016/04/20)
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- Microwave-assisted solvent-free synthesis of 3-[(4-substituted piperazin-1-yl)alkyl] imidazo[2,1-b][1,3]benzothiazol-2(3H)-ones as serotonin3 (5-HT3) receptor antagonists
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A series of novel 3-[(4-substituted piperazin-1-yl)alkyl]imidazo[2,1-b][1, 3]benzothiazol-2(3H)-ones were prepared by microwave irradiation using alumina as solid support and also by a conventional method. The compounds were characterized by spectral data and the purity was ascertained by microanalysis. The synthesized compounds were evaluated for 5-hydroxytryptamine3 antagonisms in a longitudinal muscle-myenteric plexus preparation from guinea pig ileum against the 5-hydroxytryptamine3 agonist, 2-methyl-5-hydroxytryptamine. Among the test compounds, 3-[2-(4-methylpiperazin- 1-yl)ethyl]imidazo[2,1-6][1,3]benzothiazol-2(3H)-one (3b) showed most favorable 5-hydroxytryptamine3 antagonism (pA2 6.7) in the isolated guinea pig ileum.
- Mahesh,Venkatesha Perumal,Pandi
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p. 411 - 414
(2007/10/03)
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- Synthesis of new 1,2,3-benzotriazin-4-one-arylpiperazine derivatives as 5-HT(1A) serotonin receptor ligands
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A series of novel 1,2,3-benzotriazin-4-one derivatives was prepared and evaluated as ligands for 5-HT receptors. Radioligand binding assays proved that the majority of the novel compounds behaved as good to excellent ligands at the 5-HT(1A) receptor, some of which were selective with respect 5-HT(2A) and 5-HT(2C) receptors. Six analogues (1a, 2a, 2b, 2c, 2e and 2i) were selected and further evaluated for their binding affinities on D1, D2 dopaminergic and α1-, α2-adrenergic receptors. A o-OCH3 derivative (2e) bound at 5-HT(1A) sites with subnanomolar affinity (IC50=0.059 nM) and shows high selectivity over all considered receptors and may offer a new lead for the development of therapeutically efficacious agents. Copyright (C) 2000 Elsevier Science Ltd.
- Caliendo, Giuseppe,Fiorino, Ferdinando,Grieco, Paolo,Perissutti, Elisa,Santagada, Vincenzo,Severino, Beatrice,Bruni, Giancarlo,Romeo, Maria Rosaria
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p. 533 - 538
(2007/10/03)
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- Synthesis and trazodone-like pharmacological profile of 1- and 2--propyl>benzotriazoles
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A series of 1- and 2--propyl>benzotriazoles were prepared and evaluated for their trazodone-like pharmacological profile; as preliminary pharmacological screening, the compounds were tested for their antiserotonergic, antiadrenergic and antihistaminic in vitro activity as well as for their analgesic in vivo action.Structure-activity relationships showed that among the synthesized compounds, the analogues bearing on the 4-piperazine nitrogen either an unsubstituted phenyl ring or a 2- or 3-chloro phenyl moiety show a pharmacological profilesimilar to that of the antidepressant trazodone. benzotriazoles / antiserotonergic / antiadrenergic / antihistaminic/ analgesic
- Caliendo, G.,Carlo, R. Di,Meli, R.,Perissutti, E.,Santagada, V.,et al.
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p. 969 - 974
(2007/10/02)
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- Synthesis and Biological Activities of 3-Substituted 1-Aryloxyaminopropanes
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A number of 3-substituted 1-aryloxyaminopropanes (9-43) have been prepared by the reaction of appropriate hydroxyaryl compound with 1-chloro-3-1-(N4-aryl-piperazinyl/piperidinyl)>propanes (1-8).The 1-(6/7-quinolyloxy)-3-substituted
- Agarwal, Shiv K.,Kumar, Yatendra,Saxena, Anil K.,Jain, Padam C.,Anand, Nitya
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p. 435 - 439
(2007/10/02)
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