共查询到20条相似文献,搜索用时 31 毫秒
1.
Rie Nishikawa-Shimono Yoshinori Sekiguchi Takeshi Koami Madoka Kawamura Daisuke Wakasugi Kazuhito Watanabe Shunichi Wakahara Kayo Kimura Susumu Yamanobe Tetsuo Takayama 《Bioorganic & medicinal chemistry》2013,21(24):7674-7685
In this study, we describe the synthesis and structure–activity relationship (SAR) of a series of isoquinoline chemoattractant receptor–homologous molecule expressed on Th2 cells (CRTH2) antagonists. TASP0376377 (15-20), one of the most potent compounds, showed a potent binding affinity (IC50 = 19 nM) in addition to the excellent functional antagonist activity (IC50 = 13 nM). Moreover, the efficacy of this compound in a chemotaxis assay (IC50 = 23 nM) was in good agreement with its potency as a CRTH2 antagonist. In addition, 15-20 exhibited greater selectivity in binding to CRTH2 than to the DP1 prostanoid receptor (IC50 >1 μM) or the enzymes COX-1 and COX-2 (IC50 >10 μM). 相似文献
2.
Chul Min Park So Young Kim Woo Kyu Park Jung Hwan Choi Churl Min Seong 《Bioorganic & medicinal chemistry letters》2010,20(17):5221-5224
(Piperazin-1-yl-phenyl)-arylsulfonamides were synthesized and identified to show high affinities for both 5-HT2C and 5-HT6 receptors. Among them, naphthalene-2-sulfonic acid isopropyl-[3-(4-methyl-piperazin-1-yl)-phenyl]-amide (6b) exhibits the highest affinity towards both 5-HT2C (IC50 = 4 nM) and 5-HT6 receptors (IC50 = 3 nM) with good selectivity over other serotonin (5-HT1A, 5-HT2A, and 5-HT7) and dopamine (D2–D4) receptor subtypes. In 5-HT2C and 5-HT6 receptor functional assays, this compound showed considerable antagonistic activity for both receptors. 相似文献
3.
《Bioorganic & medicinal chemistry》2016,24(2):85-91
Here, we report the design, synthesis and structure activity relationship of novel small molecule opioid ligands based on 5-amino substituted (tetrahydronaphthalen-2-yl)methyl moiety with N-phenyl-N-(piperidin-2-yl)propionamide derivatives. We synthesized various molecules including amino, amide and hydroxy substitution on the 5th position of the (tetrahydronaphthalen-2-yl)methyl moiety. In our further designs we replaced the (tetrahydronaphthalen-2-yl)methyl moiety with benzyl and phenethyl moiety. These N-phenyl-N-(piperidin-2-yl)propionamide analogues showed moderate to good binding affinities (850–4 nM) and were selective towards the μ opioid receptor over the δ opioid receptors. From the structure activity relationship studies, we found that a hydroxyl substitution at the 5th position of (tetrahydronapthalen-2yl)methyl group, ligands 19 and 20, showed excellent binding affinities 4 and 5 nM, respectively, and 1000 fold selectivity towards the μ opioid relative to the delta opioid receptor. The ligand 19 showed potent agonist activities 75 ± 21 nM, and 190 ± 42 nM in the GPI and MVD assays. Surprisingly the fluoro analogue 20 showed good agonist activities in MVD assays 170 ± 42 nM, in contrast to its binding affinity results. 相似文献
4.
《Bioorganic & medicinal chemistry》2014,22(6):1929-1937
The new series of 5-(2-phenoxybenzyl)-4H-1,2,4-triazoles, possessing C-3 thio, alkylthio and ethoxy substituents, and 2-amino-5-(2-phenoxybenzyl)-1,3,4-oxadiazoles were designed and synthesized as novel benzodiazepine analogues. Most of them revealed similar to superior binding affinity to the GABAA/benzodiazepine receptor complex, relative to diazepam as the reference drug. Among them, 5-(4-chloro-2-(2-fluorophenoxy)benzyl)-3-benzylthio-4H-1,2,4-triazole (8l) showed the highest affinity (IC50 = 0.892 nM) relative to diazepam (IC50 = 2.857 nM) and also showed the most increase in pentylenetetrazole-induced seizure threshold relative to diazepam as the reference drug. 相似文献
5.
Dennis A. Brown Manoj Mishra Suhong Zhang Swati Biswas Ingrid Parrington Tamara Antonio Maarten E.A. Reith Aloke K. Dutta 《Bioorganic & medicinal chemistry》2009,17(11):3923-3933
Here we report on the design and synthesis of several heterocyclic analogues belonging to the 5/7-{[2-(4-aryl-piperazin-1-yl)-ethyl]-propyl-amino}-5,6,7,8-tetrahydro-naphthalen-2-ol series of molecules. Compounds were subjected to [3H]spiperone binding assays, carried out with HEK-293 cells expressing either D2 or D3 dopamine receptors, in order to evaluate their inhibition constant (Ki) at these receptors. Results indicate that N-substitution on the piperazine ring can accommodate various substituted indole rings. The results also show that in order to maintain high affinity and selectivity for the D3 receptor the heterocyclic ring does not need to be connected directly to the piperazine ring as the majority of compounds included here are linked either via an amide or a methylene linker to the heterocyclic moiety. The enantiomers of the most potent racemic compound 10e exhibited differential activity with (?)-10e (Ki; D2 = 47.5 nM, D3 = 0.57 nM) displaying higher affinity at both D2 and D3 receptors compared to its enantiomer (+)-10e (Ki; D2 = 113 nM, D3 = 3.73 nM). Additionally, compound (?)-10e was more potent and selective for the D3 receptor compared to either 7-OH-DPAT or 5-OH-DPAT. Among the bioisosteric derivatives, the indazole derivative 10g and benzo[b]thiophene derivative 10i exhibited the highest affinity for D2 and D3 receptors. In the functional GTPγS binding study, one of the lead molecules, (?)-15, exhibited potent agonist activity at both D2 and D3 receptors with preferential affinity at D3. 相似文献
6.
Suk Ho Lee Hee Jeong Seo Min Ju Kim Suk Youn Kang Sung-Han Lee Kwangwoo Ahn MinWoo Lee Ho-Kyun Han Jeongmin Kim Jinhwa Lee 《Bioorganic & medicinal chemistry letters》2009,19(23):6632-6636
Cannabinoid CB-1 receptors have been the focus of extensive studies since the first clinical results of rimonabant (SR141716) for the treatment of obesity and obesity-related metabolic disorders were reported in 2001. To further evaluate the properties of CB receptors, we have designed and efficiently prepared a series of pentacycle derivatives. Five of the new compounds which displayed high in vitro rCB1 binding affinities were assayed for binding to hCB2 receptor. Noticeably, 2-(5-(4-bromophenyl)-1-(2,4-dichlorophenyl)-4-(5-methyl-1,3,4-thiadiazol-2-yl)-1H-pyrazol-3-yl)-5-(1-(trifluoromethyl)cyclopropyl)-1,3,4-oxadiazole (16l) demonstrated good binding affinity and decent selectivity for rCB1 receptor (IC50 = 1.72 nM, hCB2/rCB1 = 142). 相似文献
7.
《Bioorganic & medicinal chemistry letters》2014,24(9):2094-2097
Lactam and oxazolidinone derived potent 5-hydroxytryptamine 6 (5-HT6) receptor antagonists have been disclosed. One potent member from the lactam series, racemic compound 14 (Ki of 2.6 nM in binding assay, IC50 of 15 nM in functional cAMP antagonism assay) was separated into corresponding enantiomers that displayed the effect of chirality on binding potency (Ki of 1.6 nM and 3000 nM, respectively). The potent enantiomer displayed an IC50 of 8 nM in cAMP antagonism assay, selectivity against a number of family members as well as brain permeability in rats after 6 h post oral administration. 相似文献
8.
Alexandre V. Ivachtchenko Elena S. Golovina Madina G. Kadieva Angela G. Koryakova Sergiy M. Kovalenko Oleg D. Mitkin Ilya M. Okun Irina M. Ravnyeyko Sergey E. Tkachenko Oleg V. Zaremba 《Bioorganic & medicinal chemistry》2010,18(14):5282-5290
A number of 3-(phenylsulfonyl)thieno[2,3-e][1,2,3]triazolo[1,5-a]pyrimidines were prepared and their 5-HT6 receptor binding affinity and ability to inhibit the functional cellular responses to serotonin were evaluated. 3-[(3-Chlorophenyl)sulfonyl]-N-(tetrahydrofuran-2-ylmethyl)thieno[2,3-e][1,2,3]triazolo[1,5-a]pyrimidin-5-amine 2{5,26} appeared to be the most active in a functional assay (IC50 = 29.0 nM) and 3-(phenylsulfonyl)-N-(2-thienylmethyl) thieno[2,3-e][1,2,3]triazolo[1,5-a]pyrimidin-5-amine 2{1,28} demonstrated the greatest affinity in a 5-HT6 receptor radioligand binding assay (Ki = 1.7 nM). A screening of 5-HT2A and 5-HT2B receptor affinity revealed that 3-(phenylsulfonyl)thieno[2,3-e][1,2,3]triazolo[1,5-a]pyrimidines are highly selective 5-HT6 receptor ligands. 相似文献
9.
Prabhakar R. Polepally Kate White Eyal Vardy Bryan L. Roth Daneel Ferreira Jordan K. Zjawiony 《Bioorganic & medicinal chemistry letters》2013,23(10):2860-2862
Salvinorin A, the active ingredient of the hallucinogenic plant Salvia divinorum is the most potent known naturally occurring hallucinogen and is a selective κ-opioid receptor agonist. To better understand the ligand–receptor interactions, a series of dicarboxylic ester-type of salvinorin A derivatives were synthesized and evaluated for their binding affinity at κ-, δ- and μ-opioid receptors. Most of the analogues show high affinity to the κ-opioid receptor. Methyl malonyl derivative 4 shows the highest binding affinity (Ki = 2 nM), analogues 5, 7, and 14 exhibit significant affinity for the κ-receptor (Ki = 21, 36 and 39 nM). 相似文献
10.
Suk Ho Lee Hee Jeong Seo Min Ju Kim Suk Youn Kang Kwang-Seop Song Sung-Han Lee Myung Eun Jung Jeongmin Kim Jinhwa Lee 《Bioorganic & medicinal chemistry letters》2009,19(7):1899-1902
Cannabinoid CB-1 receptors have been the focus of extensive studies since the first clinical results of rimonabant (SR141716) for the treatment of obesity and obesity-related metabolic disorders were reported in 2001. To further evaluate the properties of CB receptors, we have designed and efficiently prepared a series of oxadiazole-diarylpyrazole 4-carboxamides. Six of the new compounds which displayed high in vitro CB1 binding affinities were assayed for binding to CB2 receptor. Noticeably, 5-(4-bromophenyl)-3-(5-tert-butyl-1,3,4-oxadiazol-2-yl)-1-(2,4-dichlorophenyl)-N-phenyl-1H-pyrazole-4-carboxamide (12q) and 5-(4-bromophenyl)-3-(5-tert-butyl-1,3,4-oxadiazol-2-yl)-1-(2,4-dichlorophenyl)-N-(pyridin-2-yl)-1H-pyrazole-4-carboxamide (12r) demonstrated good binding affinity and decent selectivity for CB1 receptor (IC50 = 1.35 nM, CB2/CB1 = 286 for 12q; IC50 = 1.46 nM, CB2/CB1 = 256 for 12r). 相似文献
11.
Ermitas Alcalde Neus Mesquida Sara López-Pérez Jordi Frigola Ramon Mercè Jörg Holenz Marta Pujol Enrique Hernández 《Bioorganic & medicinal chemistry》2009,17(20):7387-7397
Further studies in quest of 5-HT6 serotonin receptor ligands led to the design and synthesis of a few selected examples of N-(inden-5-yl)sulfonamides with a ring-constrained aminoethyl side chain at the indene 3-position, some of which exhibited a high binding affinity, such as the pyrrolidine analogue 28 (Ki = 3 nM). Moreover, the structurally abbreviated N-(inden-5-yl)sulfonamides showed Ki values ?43 nM, which indicates that neither the N,N-aminoethyl nor the conformationally restricted aminoethyl side arm at the indene 3-position are required for binding. Selected compounds were then tested in a functional cAMP stimulation assay and found to act as 5-HT6 antagonists, although with moderate potency at the micromolar level. 相似文献
12.
Euna Yoo Juhee Yoon Ae Nim Pae Hyewhon Rhim Woo-Kyu Park Jae Yang Kong Hea-Young Park Choo 《Bioorganic & medicinal chemistry》2010,18(4):1665-1675
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). 相似文献
13.
Jian Liu Shuwen He Tianying Jian Peter H. Dobbelaar Iyassu K. Sebhat Linus S. Lin Allan Goodman Cheng Guo Peter R. Guzzo Mark Hadden Alan J. Henderson Kevin Pattamana Megan Ruenz Bruce J Sargent Brian Swenson Larry Yet Constantin Tamvakopoulos Qianping Peng Jie Pan Yanqing Kan Ravi P. Nargund 《Bioorganic & medicinal chemistry letters》2010,20(7):2074-2077
This Letter describes a series of potent and selective BRS-3 agonists containing a biarylethylimidazole pharmacophore. Extensive SAR studies were carried out with different aryl substitutions. This work led to the identification of a compound 2-{2-[4-(pyridin-2-yl)phenyl]ethyl}-5-(2,2-dimethylbutyl)-1H-imidazole 9 with excellent binding affinity (IC50 = 18 nM, hBRS-3) and functional agonist activity (EC50 = 47 nM, 99% activation). After oral administration, compound 9 had sufficient exposure in diet induced obese mice to demonstrate efficacy in lowering food intake and body weight via BRS-3 activation. 相似文献
14.
Ronald C. Bernotas Robert R. Singhaus David H. Kaufman John Ullrich Horace Fletcher Elaine Quinet Ponnal Nambi Rayomand Unwalla Anna Wilhelmsson Annika Goos-Nilsson Mathias Farnegardh Jay Wrobel 《Bioorganic & medicinal chemistry》2009,17(4):1663-1670
A series of 4-(amido-biarylether)-quinolines was prepared as potential LXR agonists. Appropriate substitution with amide groups provided high affinity LXR ligands, some with excellent potency and efficacy in functional assays of LXR activity. Novel amide 4g had a binding IC50 = 1.9 nM for LXRβ and EC50 = 34 nM (96% efficacy relative to T0901317) in an ABCA1 gene expression assay in mouse J774 cells, demonstrating that 4-(biarylether)-quinolines with appropriate amide substitution are potent LXR agonists 相似文献
15.
Ronald C. Bernotas David H. Kaufman Robert R. Singhaus John Ullrich Rayomand Unwalla Elaine Quinet Ponnal Nambi Anna Wilhelmsson Annika Goos-Nilsson Jay Wrobel 《Bioorganic & medicinal chemistry》2009,17(23):8086-8092
A series of 4-(3-aryloxyaryl)quinolines with alcohol substituents on the terminal aryl ring was prepared as potential LXR agonists, in which an alcohol group replaced an amide in previously reported amide analogs. High affinity LXR ligands with excellent agonist potency and efficacy in a functional model of LXR activity were identified, demonstrating that alcohols can substitute for amides while retaining LXR activity. The most potent compound was 5b which had an IC50 = 3.3 nM for LXRβ binding and EC50 = 12 nM (122% efficacy relative to T0901317) in an ABCA1 mRNA induction assay in J774 mouse cells. 相似文献
16.
Yoko Shimoda Joji Yui Lin Xie Masayuki Fujinaga Tomoteru Yamasaki Masanao Ogawa Nobuki Nengaki Katsushi Kumata Akiko Hatori Kazunori Kawamura Ming-Rong Zhang 《Bioorganic & medicinal chemistry》2013,21(17):5316-5322
1-[2-(4-Methoxyphenyl)phenyl]piperazine (4) is a potent serotonin 5-HT7 receptor antagonist (Ki = 2.6 nM) with a low binding affinity for the 5-HT1A receptor (Ki = 476 nM). As a potential positron emission tomography (PET) radiotracer for the 5-HT7 receptor, [11C]4 was synthesized at high radiochemical yield and specific activity, by O-[11C]methylation of 2′-(piperazin-1-yl)-[1,1′-biphenyl]-4-ol (6) with [11C]methyl iodide. Autoradiography revealed that [11C]4 showed in vitro specific binding with 5-HT7 in the rat brain regions, such as the thalamus which is a region with high 5-HT7 expression. Metabolite analysis indicated that intact [11C]4 in the brain exceeded 90% of the radioactive components at 15 min after the radiotracer injection, although two radiolabeled metabolites were found in the rat plasma. The PET study of rats showed moderated uptake of [11C]4 in the brain (1.2 SUV), but no significant regional difference in radioactivity in the brain. Pretreatment with 5-HT7-selective antagonist SB269970 (3) did not decrease the uptake of [11C]4 in the rat brain. Further studies are warranted that focus on the development of PET ligand candidates with higher binding affinity for 5-HT7 and higher in vivo stability in brain than 4. 相似文献
17.
Abdol R. Hajipour Dominique Fontanilla Uyen B. Chu Marty Arbabian Arnold E. Ruoho 《Bioorganic & medicinal chemistry》2010,18(12):4397-4404
The sigma-1 receptor is a unique non-opioid, non-PCP binding site that has been implicated in many different pathophysiological conditions including psychosis, drug addiction, retinal degeneration and cancer. Based on the structure of fenpropimorph, a high affinity (Ki = 0.005 nM)1 sigma-1 receptor ligand and strong inhibitor of the yeast sterol isomerase (ERG2), we previously deduced a basic sigma-1 receptor pharmacophore or chemical backbone composed of a phenyl ring attached to a di-substituted nitrogen atom via an alkyl chain.2 Here, we report the design and synthesis of various N,N-dialkyl or N-alkyl-N-aralkyl derivatives based on this pharmacophore as well as their binding affinities to the sigma-1 receptor. We introduce three high affinity sigma-1 receptor compounds, N,N-dibutyl-3-(4-fluorophenyl)propylamine (9), N,N-dibutyl-3-(4-nitrophenyl)propylamine (3), and N-propyl-N′-4-aminophenylethyl-3-(4-nitrophenyl)propylamine (20) with Ki values of 17.7 nM, 0.36 nM, and 6 nM, respectively. In addition to sigma receptor affinity, we show through cytotoxicity assays that growth inhibition of various tumor cell lines occurs with our high affinity N,N-dialkyl or N-alkyl-N-aralkyl derivatives. 相似文献
18.
《Bioorganic & medicinal chemistry》2016,24(12):2794-2808
A new series of 7-aminopyrazolo[4,3-d]pyrimidine derivatives (1–31) were synthesized to evaluate some structural modifications at the 2- and 5-positions aimed at shifting affinity towards the human (h) A2A adenosine receptor (AR) or both hA2A and hA1 ARs. The most active compounds were those featured by a 2-furyl or 5-methylfuran-2-yl moiety at position 5, combined with a benzyl or a substituted-benzyl group at position 2. Several of these derivatives (22–31) displayed nanomolar affinity for the hA2A AR (Ki = 3.62–57 nM) and slightly lower for the hA1 ARs, thus showing different degrees (3–22 fold) of hA2A versus hA1 selectivity. In particular, the 2-(2-methoxybenzyl)-5-(5-methylfuran-2-yl) derivative 25 possessed the highest hA2A and hA1 AR affinities (Ki = 3.62 nM and 18 nM, respectively) and behaved as potent antagonist at both these receptors (cAMP assays). Its 2-(2-hydroxybenzyl) analog 26 also showed a high affinity for the hA2A AR (Ki = 5.26 nM) and was 22-fold selective versus the hA1 subtype. Molecular docking investigations performed at the hA2A AR crystal structure and at a homology model of the hA1 AR allowed us to represent the hypothetical binding mode of our derivatives and to rationalize the observed SARs. 相似文献
19.
《Bioorganic & medicinal chemistry》2014,22(12):3105-3114
The dopamine D4 receptor has been shown to play key roles in certain CNS pathologies including addiction to cigarette smoking. Thus, selective D4 ligands may be useful in treating some of these conditions. Previous studies in our laboratory have indicated that the piperazine analog of haloperidol exhibits selective and increased affinity to the DAD4 receptor subtype, in comparison to its piperidine analog. This led to further exploration of the piperazine moiety to identify new agents that are selective at the D4 receptor. Compound 27 (KiD4 = 0.84 nM) was the most potent of the compounds tested. However, it only had moderate selectivity for the D4 receptor. Compound 28 (KiD4 = 3.9 nM) while not as potent, was more discriminatory for the D4 receptor subtype. In fact, compound 28 has little or no binding affinity to any of the other four DA receptor subtypes. In addition, of the 23 CNS receptors evaluated, only two, 5HT1AR and 5HT2BR, have binding affinity constants better than 100 nM (Ki <100 nM). Compound 28 is a potentially useful D4-selective ligand for probing disease treatments involving the D4 receptor, such as assisting smoking cessation, reversing cognitive deficits in schizophrenia and treating erectile dysfunction. Thus, further optimization, functional characterization and evaluation in animal models may be warranted. 相似文献
20.
Won Jun Choi Hyuk Woo Lee Hea Ok Kim Moshe Chinn Zhan-Guo Gao Amit Patel Kenneth A. Jacobson Hyung Ryong Moon Young Hoon Jung Lak Shin Jeong 《Bioorganic & medicinal chemistry》2009,17(23):8003-8011
On the basis of a bioisosteric rationale, 4′-thionucleoside analogues of IB-MECA (N6-(3-Iodo-benzyl)-9-(5′-methylaminocarbonyl-β-d-ribofuranosyl)adenine), which is a potent and selective A3 adenosine receptor (AR) agonist, were synthesized from d-gulonic acid γ-lactone. The 4′-thio analogue (5h) of IB-MECA showed extremely high binding affinity (Ki = 0.25 nM) at the human A3AR and was more potent than IB-MECA (Ki = 1.4 nM). Bulky substituents at the 5′-uronamide position, such as cyclohexyl and 2-methylbenzyl, in this series of 2-H nucleoside derivatives were tolerated in A3AR binding, although small alkyl analogues were more potent. 相似文献