Synthesis and biological evaluation of 2-fluoro and 3-trifluoromethyl-phenyl-piperazinylalkyl derivatives of 1<i>H</i>-imidazo[2,1-<i>f</i>]purine-2,4(3<i>H</i>,8<i>H</i>)-dione as potential antidepressant agents
2-fluoro and 3-trifluoromethylphenylpiperazinylalkyl derivatives of 1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione (4-21) were synthesized and evaluated for their serotonin (5-HT1A/5-HT7) receptor affinity and phosphodiesterase (PDE4B and PDE10A) inhibitor activity. The study enabled the identification of potent 5-HT1A, 5-HT7 and mixed 5-HT1A/5-HT7 receptorligands with weak inhibitory potencies for PDE4B and PDE10A
Synthesis and biological evaluation of novel T-type Ca2+ channel blockers
作者:Hee Kyung Jung、Munikumar Reddy Doddareddy、Joo Hwan Cha、Hyewhon Rhim、Yong Seo Cho、Hun Yeong Koh、Bong Young Jung、Ae Nim Pae
DOI:10.1016/j.bmc.2004.06.011
日期:2004.8.1
A small molecule library of piperazinylalkylisoxazole derivatives containing about 600 compounds was designed, synthesized and evaluated for blocking effects on T-type Ca2+ channel. Several ligands were identified to possess high inhibitory activity against the T-type Ca2+ channel. The compound 21 with trifluoromethyl substituents at C-3-position of phenyl group (W) and C-2-position of phenyl group (R-2) showed the highest inhibitory activity with IC50 value of 1.02 muM, which is comparable to that of mibefradil. (C) 2004 Elsevier Ltd. All rights reserved.
Synthesis and biological evaluation of (phenylpiperazinyl-propyl)arylsulfonamides as selective 5-HT2A receptor antagonists
作者:Euna Yoo、Juhee Yoon、Ae Nim Pae、Hyewhon Rhim、Woo-Kyu Park、Jae Yang Kong、Hea-Young Park Choo
DOI:10.1016/j.bmc.2009.12.067
日期:2010.2
A novel series of 5-HT2A ligands that contain a (phenylpiperazinyl-propyl)arylsulfonamides skeleton was synthesized. Thirty-seven N-(cycloalkylmethyl)-4-methoxy-N-(3-(4-arylpiperazin-1-yl)propyl)arylsulfonamide and N-(4-(4-arylpiperazin-1-yl)butan-2-yl)-arylsulfonamide compounds were obtained. The binding of these compounds to the 5-HT2A, 5-HT2C, and 5-HT7 receptors was evaluated. Most of the compounds showed IC50 values of less than 100 nM and exhibited high selectivity for the 5-HT2A receptor. Among the synthesized compounds, 16a and 16d showed good affinity at 5-HT2A (IC50 = 0.7 nM and 0.5 nM) and good selectivity over 5-HT2C (50-100 times) and 5-HT7 (1500-3000 times). (C) 2010 Elsevier Ltd. All rights reserved.
Further optimization of novel pyrrole 3-carboxamides for targeting serotonin 5-HT2A, 5-HT2C, and the serotonin transporter as a potential antidepressant
作者:Suk Youn Kang、Eun-Jung Park、Woo-Kyu Park、Hyun Jung Kim、Gildon Choi、Myung Eun Jung、Hee Jeong Seo、Min Ju Kim、Ae Nim Pae、Jeongmin Kim、Jinhwa Lee
DOI:10.1016/j.bmc.2010.06.037
日期:2010.8
In the continuing search for novel compounds targeting serotonin 5-HT2A, 5-HT2C, and serotonin transporter, new arylpiperazine-containing pyrrole 3-carboxamide derivatives were synthesized and evaluated. Based on the lead reported previously, structural modifications regarding N-(3-(4-(2,3-dichlorophenyl)piperazin-1-yl)propyl)-1,2-dimethyl-5-phenyl-1H-pyrrole-3-carboxamide 5, were accomplished for improvements in not only binding affinity against serotonin receptors and transporter, but also in hERG channel inhibition. Along the line, both the forced swimming tests and spontaneous locomotor activity tests were performed to distinguish between antidepressant activity and false positive results. As potential antidepressant agents, both 2,4-dimethyl-5-phenyl-1H-pyrrole-3-carboxamide and 5-tert-butyl-2-methyl-1H-pyrrole-3-carboxamide derivatives exhibited favorable in vitro and in vivo activities, warranting further investigation around these scaffolds. (C) 2010 Elsevier Ltd. All rights reserved.
Synthesis and biological evaluation of oxazole derivatives as T-type calcium channel blockers
作者:Jie Eun Lee、Hun Yeong Koh、Seon Hee Seo、Yi Yeon Baek、Hyewhon Rhim、Yong Seo Cho、Hyunah Choo、Ae Nim Pae
DOI:10.1016/j.bmcl.2010.05.030
日期:2010.7
T-type calcium channel is one of therapeutic targets for the treatment of cardiovascular diseases and neuropathic pain. In this study, as a part of our ongoing efforts to develop potent T-type calcium channel blockers, we designed oxazole derivatives substituted with arylpiperazinylalkylamines. The oxazoles were synthesized in a convenient convergent synthetic method, and biologically evaluated against alpha(1G) (Ca(V)3.1) T-type calcium channel. Among total 41 oxazole compounds synthesized, the most active one was the compound 10-35 with an IC(50) value of 0.65 mu M, which is comparable with that of mibefradil. (C) 2010 Elsevier Ltd. All rights reserved.