1
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Yang S, Wang F, Scales S, Tran-Dubé M, Berry M, Xu H, Tang F, Xue L, Ma Z, Li B, McAlpine I. A Disconnection for Rapid Access to Heterocyclic Benzylic Amines with Fully Substituted α-Carbons. J Org Chem 2024; 89:3926-3930. [PMID: 38441005 DOI: 10.1021/acs.joc.3c02748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2024]
Abstract
2- or 4-Pyridyl benzylic amines represent a privileged motif in drug discovery. However, the formation of heterocyclic benzylic amines with fully substituted α-carbons can require the execution of lengthy synthetic routes, which limit their application. Addition of various nucleophilic agents to Ellman's imines has been well established; however, there is no precedented literature reported for pyridyl-type nucleophiles, which are very important for medicinal chemistry. In this letter, we disclose the development of a one-step synthesis of heterocyclic benzylic amines with fully substituted α-carbons from heteroaryl halides and sulfinyl imines. Starting from 2,4-dibromopyridine, regioselective synthesis of 2- or 4-pyridyl benzylic amines could be achieved by choosing toluene or MTBE as a solvent.
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Affiliation(s)
- Shouliang Yang
- Pfizer Oncology Medicinal Chemistry, San Diego, California 92121, United States
| | - Fen Wang
- Pfizer Oncology Medicinal Chemistry, San Diego, California 92121, United States
| | - Stephanie Scales
- Pfizer Oncology Medicinal Chemistry, San Diego, California 92121, United States
| | - Michelle Tran-Dubé
- Pfizer Oncology Medicinal Chemistry, San Diego, California 92121, United States
| | - Madeline Berry
- Pfizer Oncology Medicinal Chemistry, San Diego, California 92121, United States
| | | | | | | | | | - Bryan Li
- Pfizer Chemical R&D, San Diego, California 92121, United States
| | - Indrawan McAlpine
- Pfizer Oncology Medicinal Chemistry, San Diego, California 92121, United States
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2
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Stebletsova IA, Larin AA, Ananyev IV, Fershtat LL. Regioselective Synthesis of NO-Donor (4-Nitro-1,2,3-triazolyl)furoxans via Eliminative Azide-Olefin Cycloaddition. Molecules 2023; 28:6969. [PMID: 37836813 PMCID: PMC10574565 DOI: 10.3390/molecules28196969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 09/29/2023] [Accepted: 10/01/2023] [Indexed: 10/15/2023] Open
Abstract
A facile and efficient method for the regioselective [3 + 2] cycloaddition of 4-azidofuroxans to 1-dimethylamino-2-nitroethylene under p-TSA catalysis affording (4-nitro-1,2,3-triazolyl)furoxans was developed. This transformation is believed to proceed via eliminative azide-olefin cycloaddition resulting in its complete regioselectivity. The developed protocol has a broad substrate scope and enables a straightforward assembly of the 4-nitro-1,2,3-triazole motif. Moreover, synthesized (4-nitro-1,2,3-triazolyl)furoxans were found to be capable of NO release in a broad range of concentrations, thus providing a novel platform for future drug design and related biomedical applications of heterocyclic NO donors.
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Affiliation(s)
- Irina A. Stebletsova
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, 119991 Moscow, Russia; (I.A.S.); (A.A.L.)
- D.I. Mendeleev University of Chemical Technology of Russia, 9 Miusskaya Square, 125047 Moscow, Russia
| | - Alexander A. Larin
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, 119991 Moscow, Russia; (I.A.S.); (A.A.L.)
| | - Ivan V. Ananyev
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, GSP-1, Leninsky Prospect, 31, 119991 Moscow, Russia;
| | - Leonid L. Fershtat
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, 119991 Moscow, Russia; (I.A.S.); (A.A.L.)
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3
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Sukhanov GT, Filippova YV, Gatilov YV, Sukhanova AG, Krupnova IA, Bosov KK, Pivovarova EV, Krasnov VI. Energetic Materials Based on N-substituted 4(5)-nitro-1,2,3-triazoles. MATERIALS 2022; 15:ma15031119. [PMID: 35161066 PMCID: PMC8838066 DOI: 10.3390/ma15031119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 01/17/2022] [Accepted: 01/26/2022] [Indexed: 12/10/2022]
Abstract
The regularities and synthetic potentialities of the alkylation of 4(5)-nitro-1,2,3-triazole in basic media were explored, and new energetic ionic and nitrotriazole-based coordination compounds were synthesized in this study. The reaction had a general nature and ended with the formation of N1-, N2-, and N3-alkylation products, regardless of the conditions and reagent nature (alkyl- or aryl halides, alkyl nitrates, dialkyl sulfates). This reaction offers broad opportunities for expanding the variability of substituents on the nitrotriazole ring in the series of primary and secondary aliphatic, alicyclic, and aromatic substituents, which is undoubtedly crucial for solving the problems related to both high-energy materials development and medicinal chemistry when searching for new efficient bioactive compounds. An efficient methodology for the separation of regioisomeric N-alkyl(aryl)nitrotriazoles has been devised and relies on the difference in their basicity and reactivity during quaternization and complexation reactions. Based on the inaccessible N3-substitution products that exhibit a combination of properties of practical importance, a series of energy-rich ionic systems and coordination compounds were synthesized that are gaining ever-increasing interest for the chemistry of energy-efficient materials, coordination chemistry, and chemistry of ionic liquids.
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Affiliation(s)
- Gennady T. Sukhanov
- Laboratory for Chemistry and Technology of High-Energy Azoles, Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), 659322 Biysk, Russia; (G.T.S.); (A.G.S.); (I.A.K.); (K.K.B.); (E.V.P.)
| | - Yulia V. Filippova
- Laboratory for Chemistry and Technology of High-Energy Azoles, Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), 659322 Biysk, Russia; (G.T.S.); (A.G.S.); (I.A.K.); (K.K.B.); (E.V.P.)
- Correspondence: ; Tel.: +7-3854-30-19-76
| | - Yuri V. Gatilov
- Department of Chemistry, Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia; (Y.V.G.); (V.I.K.)
| | - Anna G. Sukhanova
- Laboratory for Chemistry and Technology of High-Energy Azoles, Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), 659322 Biysk, Russia; (G.T.S.); (A.G.S.); (I.A.K.); (K.K.B.); (E.V.P.)
| | - Irina A. Krupnova
- Laboratory for Chemistry and Technology of High-Energy Azoles, Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), 659322 Biysk, Russia; (G.T.S.); (A.G.S.); (I.A.K.); (K.K.B.); (E.V.P.)
| | - Konstantin K. Bosov
- Laboratory for Chemistry and Technology of High-Energy Azoles, Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), 659322 Biysk, Russia; (G.T.S.); (A.G.S.); (I.A.K.); (K.K.B.); (E.V.P.)
| | - Ekaterina V. Pivovarova
- Laboratory for Chemistry and Technology of High-Energy Azoles, Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), 659322 Biysk, Russia; (G.T.S.); (A.G.S.); (I.A.K.); (K.K.B.); (E.V.P.)
| | - Vyacheslav I. Krasnov
- Department of Chemistry, Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia; (Y.V.G.); (V.I.K.)
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4
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Mascarello A, Azevedo H, Ferreira Junior MA, Ishikawa EE, Guimarães CRW. Design, synthesis and antihypertensive evaluation of novel codrugs with combined angiotensin type 1 receptor antagonism and neprilysin inhibition. Eur J Pharm Sci 2021; 159:105731. [PMID: 33493668 DOI: 10.1016/j.ejps.2021.105731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 01/15/2021] [Accepted: 01/19/2021] [Indexed: 10/22/2022]
Abstract
The multifactorial etiology of hypertension has promoted the research of blood pressure-lowering agents with multitarget actions to achieve better clinical outcomes. We describe here the discovery of novel dual-acting antihypertensive codrugs combining pharmacophores with angiotensin type 1 (AT1) receptor antagonism and neprilysin (NEP) inhibition. Specifically, the codrugs combine the AT1 antagonists losartan or its carboxylic acid active metabolite (E-3174) with selected monocarboxylic acid NEP inhibitors through a cleavable linker. The resulting codrugs exhibited high rates of in vitro conversion into the active molecules upon incubation with human/rat liver S9 fractions and in vivo conversion after oral administration in rodents. Moreover, the acute effects of one of the designed codrugs (3b) was confirmed at the doses of 10, 30 and 60 mg/kg p.o. in the spontaneous hypertensive rat (SHR) model, showing better antihypertensive response over 24 hours than the administration of an equivalent fixed-dose combination of 15 mg/kg of losartan and 14 mg/kg of the same NEP inhibitor used in 3b. The results demonstrate that the codrug approach is a plausible strategy to develop a single molecular entity with combined AT1 and NEP activities, aiming at achieving improved pharmacokinetics, efficacy and dosage convenience, as well as reduced drug-drug interaction for hypertension patients. In addition, the developability of the codrug should be comparable to the one of marketed AT1 antagonists, most of them prodrugs, but bearing only the AT1 pharmacophore.
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Affiliation(s)
| | - Hatylas Azevedo
- Aché Laboratórios Farmacêuticos, Guarulhos, São Paulo 07034-904, Brazil
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5
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Guan J, Spry C, Tjhin ET, Yang P, Kittikool T, Howieson VM, Ling H, Starrs L, Duncan D, Burgio G, Saliba KJ, Auclair K. Exploring Heteroaromatic Rings as a Replacement for the Labile Amide of Antiplasmodial Pantothenamides. J Med Chem 2021; 64:4478-4497. [PMID: 33792339 DOI: 10.1021/acs.jmedchem.0c01755] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Malaria-causing Plasmodium parasites are developing resistance to antimalarial drugs, providing the impetus for new antiplasmodials. Although pantothenamides show potent antiplasmodial activity, hydrolysis by pantetheinases/vanins present in blood rapidly inactivates them. We herein report the facile synthesis and biological activity of a small library of pantothenamide analogues in which the labile amide group is replaced with a heteroaromatic ring. Several of these analogues display nanomolar antiplasmodial activity against Plasmodium falciparum and/or Plasmodium knowlesi, and are stable in the presence of pantetheinase. Both a known triazole and a novel isoxazole derivative were further characterized and found to possess high selectivity indices, medium or high Caco-2 permeability, and medium or low microsomal clearance in vitro. Although they fail to suppress Plasmodium berghei proliferation in vivo, the pharmacokinetic and contact time data presented provide a benchmark for the compound profile likely required to achieve antiplasmodial activity in mice and should facilitate lead optimization.
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Affiliation(s)
- Jinming Guan
- Department of Chemistry, McGill University, Montreal, QC H3A 0B8, Canada
| | - Christina Spry
- Research School of Biology, The Australian National University, Acton, ACT 2601, Australia
| | - Erick T Tjhin
- Research School of Biology, The Australian National University, Acton, ACT 2601, Australia
| | - Penghui Yang
- Department of Chemistry, McGill University, Montreal, QC H3A 0B8, Canada.,College of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an 710065, China
| | - Tanakorn Kittikool
- Department of Chemistry, McGill University, Montreal, QC H3A 0B8, Canada
| | - Vanessa M Howieson
- Research School of Biology, The Australian National University, Acton, ACT 2601, Australia
| | - Harriet Ling
- Research School of Biology, The Australian National University, Acton, ACT 2601, Australia
| | - Lora Starrs
- John Curtin School of Medical Research, The Australian National University, Acton, ACT 2601, Australia
| | - Dustin Duncan
- Department of Chemistry, McGill University, Montreal, QC H3A 0B8, Canada
| | - Gaetan Burgio
- John Curtin School of Medical Research, The Australian National University, Acton, ACT 2601, Australia
| | - Kevin J Saliba
- Research School of Biology, The Australian National University, Acton, ACT 2601, Australia.,Medical School, The Australian National University, Acton, ACT 2601, Australia
| | - Karine Auclair
- Department of Chemistry, McGill University, Montreal, QC H3A 0B8, Canada
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6
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Mishra AK, Morgon NH, Sanyal S, Robinson de Souza A, Biswas S. Catalytic O
- to N
-Alkyl Migratory Rearrangement: Transition Metal-Free Direct and Tandem Routes to N
-Alkylated Pyridones and Benzothiazolones. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800664] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Abhishek Kumar Mishra
- Division of Molecular Synthesis and Drug Discovery; Centre of Bio-Medical Research (CBMR), SGPGIMS Campus; Lucknow 226014, Uttar Pradesh India
| | - Nelson Henrique Morgon
- Department of Physical Chemistry, Institute of Chemistry; Campinas State University, UNICAMP, Campinas; São Paulo 13083-970 Brazil
| | - Suparna Sanyal
- Department of Cell and Molecular Biology, BMC; Uppsala University; 751 24 Uppsala Sweden
| | | | - Srijit Biswas
- Division of Molecular Synthesis and Drug Discovery; Centre of Bio-Medical Research (CBMR), SGPGIMS Campus; Lucknow 226014, Uttar Pradesh India
- Department of Chemistry, Rajabazar Science College Campus; University of Calcutta; Kolkata 700 009, West Bengal India
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7
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Feng B, Li Y, Li H, Zhang X, Xie H, Cao H, Yu L, Xu Q. Specific N-Alkylation of Hydroxypyridines Achieved by a Catalyst- and Base-Free Reaction with Organohalides. J Org Chem 2018; 83:6769-6775. [PMID: 29767516 DOI: 10.1021/acs.joc.8b00787] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
A specific N-alkylation of 2-hydroxypyridines is achieved by reacting with organohalides under catalyst- and base-free conditions. The observed HX-facilitated conversion of pyridyl ether intermediates to 2-pyridone products may account for the success and specific N-alkylation of the reaction under the unexpectedly simple conditions. This new reaction may provide a useful alternative for the synthesis of 2-pyridones and analogous structures because of its >99% N-selectivity, relatively broad scopes of both substrates, and no mandatory use of catalysts and bases.
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Affiliation(s)
- Bin Feng
- College of Chemistry and Materials Engineering , Wenzhou University , Wenzhou , Zhejiang 325035 , PR China
| | - Yang Li
- College of Chemistry and Materials Engineering , Wenzhou University , Wenzhou , Zhejiang 325035 , PR China
| | - Huan Li
- College of Chemistry and Materials Engineering , Wenzhou University , Wenzhou , Zhejiang 325035 , PR China
| | - Xu Zhang
- Institute of Pesticide of School of Chemistry and Chemical Engineering and School of Horticulture and Plant Protection , Yangzhou University , Yangzhou , Jiangsu 225002 , PR China
| | - Huamei Xie
- College of Chemistry and Materials Engineering , Wenzhou University , Wenzhou , Zhejiang 325035 , PR China
| | - Hongen Cao
- Institute of Pesticide of School of Chemistry and Chemical Engineering and School of Horticulture and Plant Protection , Yangzhou University , Yangzhou , Jiangsu 225002 , PR China
| | - Lei Yu
- Institute of Pesticide of School of Chemistry and Chemical Engineering and School of Horticulture and Plant Protection , Yangzhou University , Yangzhou , Jiangsu 225002 , PR China
| | - Qing Xu
- College of Chemistry and Materials Engineering , Wenzhou University , Wenzhou , Zhejiang 325035 , PR China.,Institute of Pesticide of School of Chemistry and Chemical Engineering and School of Horticulture and Plant Protection , Yangzhou University , Yangzhou , Jiangsu 225002 , PR China
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8
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Larik FA, Saeed A, Muqadar U, El-Seedi H, Faisal M, Channar PA, Mehfooz H. The role of Lawesson's reagent in the total synthesis of macrocyclic natural products. PHOSPHORUS SULFUR 2017. [DOI: 10.1080/10426507.2016.1259236] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Fayaz Ali Larik
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Aamer Saeed
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Urooj Muqadar
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Hesham El-Seedi
- Division of Pharmacognosy, Department of Medicinal Chemistry, Uppsala University, Uppsala, Sweden
| | - Muhammad Faisal
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | | | - Haroon Mehfooz
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
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9
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Moskalenko AI, Boev VI. 3-allylation of tert-butyl 4-oxopiperidine-1-carboxylate. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2014. [DOI: 10.1134/s1070428014110086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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El-Behairy MF, Aboul-Enein MN, El-Azzouny AAS, Saleh OA, Maklad YA, Aboutabl ME, Maghraby AS. Design, synthesis, and biological profile of novel N-(5-aryl-1,3,4-thiadiazol-2-yl) hydrazinecarboxamides. ACTA ACUST UNITED AC 2014. [DOI: 10.5155/eurjchem.5.3.488-496.1073] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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11
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Hu Y, Li CY, Wang XM, Yang YH, Zhu HL. 1,3,4-Thiadiazole: synthesis, reactions, and applications in medicinal, agricultural, and materials chemistry. Chem Rev 2014; 114:5572-610. [PMID: 24716666 DOI: 10.1021/cr400131u] [Citation(s) in RCA: 322] [Impact Index Per Article: 32.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yang Hu
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University , Nanjing 210093, People's Republic of China
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12
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Wu X, Zhao Y, Ge H. Nickel-Catalyzed Site-Selective Alkylation of Unactivated C(sp3)–H Bonds. J Am Chem Soc 2014; 136:1789-92. [DOI: 10.1021/ja413131m] [Citation(s) in RCA: 259] [Impact Index Per Article: 25.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Xuesong Wu
- Department
of Chemistry and Chemical Biology, Indiana University Purdue University Indianapolis, Indianapolis, Indiana 46202 United States
| | - Yan Zhao
- Department
of Chemistry and Chemical Biology, Indiana University Purdue University Indianapolis, Indianapolis, Indiana 46202 United States
| | - Haibo Ge
- Department
of Chemistry and Chemical Biology, Indiana University Purdue University Indianapolis, Indianapolis, Indiana 46202 United States
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13
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Dong HR, Gao ZL, Li RS, Hu YM, Dong HS, Xie ZX. One-pot synthesis of 5H-1,3,4-thiadiazolo[3,2-a]pyrimidin-5-one derivatives. RSC Adv 2014. [DOI: 10.1039/c4ra02714k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel and efficient one-pot method has been developed for the synthesis of 2-substituted-5H-1,3,4-thiadiazolo[3,2-a]pyrimidin-5-one derivatives by the tandem reaction of [3 + 3] cycloaddition, reduction, deamination.
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Affiliation(s)
- Hong-Ru Dong
- College of Chemistry and Chemical Engineering
- State Key Laboratory of Applied Organic Chemistry
- Institute of Organic Chemistry
- Lanzhou University
- Lanzhou, P. R. China
| | - Zhong-Lian Gao
- College of Chemistry and Chemical Engineering
- State Key Laboratory of Applied Organic Chemistry
- Institute of Organic Chemistry
- Lanzhou University
- Lanzhou, P. R. China
| | - Rong-Shan Li
- College of Chemistry and Chemical Engineering
- State Key Laboratory of Applied Organic Chemistry
- Institute of Organic Chemistry
- Lanzhou University
- Lanzhou, P. R. China
| | - Yi-Ming Hu
- The School of Nuclear Science and Technology
- Lanzhou University
- Lanzhou, P. R. China
| | - Heng-Shan Dong
- College of Chemistry and Chemical Engineering
- State Key Laboratory of Applied Organic Chemistry
- Institute of Organic Chemistry
- Lanzhou University
- Lanzhou, P. R. China
| | - Zhi-Xiang Xie
- College of Chemistry and Chemical Engineering
- State Key Laboratory of Applied Organic Chemistry
- Institute of Organic Chemistry
- Lanzhou University
- Lanzhou, P. R. China
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14
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Li Z, Wu L, Zhang T, Huang Z, Qiu G, Zhou Z, Jin L. N-2-Hydroxybenzaldehyde acylhydrazone–Fe(iii) complex: synthesis, crystal structure and its efficient and selective N-methylation. Dalton Trans 2014; 43:7554-60. [DOI: 10.1039/c4dt00121d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The n-acylhydrazone–Fe(iii) complexes permit ligand's amide N to be easily methylated and suppress the O-methylation side reactions of phenol.
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Affiliation(s)
- Zhiyou Li
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education
- South-Central University for Nationalities
- Wuhan, P. R. China
| | - Lamei Wu
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education
- South-Central University for Nationalities
- Wuhan, P. R. China
| | - Tao Zhang
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education
- South-Central University for Nationalities
- Wuhan, P. R. China
| | - Zhengxi Huang
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education
- South-Central University for Nationalities
- Wuhan, P. R. China
| | - Guofu Qiu
- College of Pharmacy
- Wuhan University
- Wuhan, China
| | - Zhongqiang Zhou
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education
- South-Central University for Nationalities
- Wuhan, P. R. China
| | - Longfei Jin
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education
- South-Central University for Nationalities
- Wuhan, P. R. China
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15
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Yoshida S, Ohigashi A, Morinaga Y, Hashimoto N, Takahashi T, Ieda S, Okada M. Development of a Practical and Scalable Synthesis of the Side Chain for ASP9726, a Successor of Micafungin. Org Process Res Dev 2013. [DOI: 10.1021/op400211t] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shinya Yoshida
- Process
Chemistry Labs., Astellas Pharma Inc., 160-2 Akahama, Takahagi-shi, Ibaraki 318-0001, Japan
| | - Atsushi Ohigashi
- Process
Chemistry Labs., Astellas Pharma Inc., 160-2 Akahama, Takahagi-shi, Ibaraki 318-0001, Japan
| | - Yasuhiro Morinaga
- Process
Chemistry Labs., Astellas Pharma Inc., 160-2 Akahama, Takahagi-shi, Ibaraki 318-0001, Japan
| | - Norio Hashimoto
- Process
Chemistry Labs., Astellas Pharma Inc., 160-2 Akahama, Takahagi-shi, Ibaraki 318-0001, Japan
| | - Takumi Takahashi
- Technology
Product Management, Astellas Pharma Inc., 2-5-1, Nihonbashi-Honcho, Chuo-ku, Tokyo, 103-8411, Japan
| | - Shigeru Ieda
- Process
Chemistry Labs., Astellas Pharma Inc., 160-2 Akahama, Takahagi-shi, Ibaraki 318-0001, Japan
| | - Minoru Okada
- Process
Chemistry Labs., Astellas Pharma Inc., 160-2 Akahama, Takahagi-shi, Ibaraki 318-0001, Japan
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16
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Rahardjo HE, Ückert S, Taher A, Sonnenberg JE, Kauffels W, Rahardjo D, Kuczyk MA. Effects of Endopeptidase Inhibition on the Contraction–Relaxation Response of Isolated Human Vaginal Tissue. J Sex Med 2013; 10:951-9. [DOI: 10.1111/jsm.12064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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17
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Pinto M, Rougeot C, Gracia L, Rosa M, Garcı́a A, Arsequell G, Valencia G, Centeno NB. Proposed Bioactive Conformations of Opiorphin, an Endogenous Dual APN/NEP Inhibitor. ACS Med Chem Lett 2012; 3:20-4. [PMID: 24900367 DOI: 10.1021/ml200182v] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2011] [Accepted: 11/17/2011] [Indexed: 11/28/2022] Open
Abstract
The conformational profiles for the endogenous peptide Opiorphin and a set of seven analogues exhibiting different inhibitory activities toward human aminopeptidase N (hAPN) and human neprilysin (hNEP) were independently computed to deduce a bioactive conformation that Opiorphin may adopt when binding these two enzymes. The conformational space was thoroughly sampled using an iterative simulated annealing protocol, and a library of low-energy conformers was generated for each peptide. Bioactive Opiorphin conformations fitting our experimental structure-activity relationship data were identified for hAPN and hNEP using computational pairwise comparisons between each of the unique low-energy conformations of Opiorphin and its analogues. The obtained results provide a structural explanation for the dual hAPN and hNEP inhibitory activity of Opiorphin and show that the inborn flexibility of Opiorphin is essential for its analgesic activity.
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Affiliation(s)
- Marta Pinto
- Computer-Assisted Drug Design
Laboratory, Research Programme on Biomedical Informatics (GRIB), IMIM-Universitat Pompeu Fabra, Dr. Aiguader 88, E-08003
Barcelona, Spain
| | - Catherine Rougeot
- Institut Pasteur−Unité de Biochimie Structurale et Cellulaire/URA2185−CNRS, 25 rue du Docteur Roux, 75724 Paris Cedex 15, France
| | - Luis Gracia
- Department of Physiology and Biophysics, Weill Cornell Medical College, 1300 York Avenue, New
York, New York 10065, United States
| | - Mònica Rosa
- Unit of Glycoconjugate Chemistry, Instituto de Química Avanzada de Catalunya (IQAC−CSIC), Jordi Girona
18-26, E-08034 Barcelona, Spain
| | - Andrés Garcı́a
- Computer-Assisted Drug Design
Laboratory, Research Programme on Biomedical Informatics (GRIB), IMIM-Universitat Pompeu Fabra, Dr. Aiguader 88, E-08003
Barcelona, Spain
| | - Gemma Arsequell
- Unit of Glycoconjugate Chemistry, Instituto de Química Avanzada de Catalunya (IQAC−CSIC), Jordi Girona
18-26, E-08034 Barcelona, Spain
| | - Gregorio Valencia
- Unit of Glycoconjugate Chemistry, Instituto de Química Avanzada de Catalunya (IQAC−CSIC), Jordi Girona
18-26, E-08034 Barcelona, Spain
| | - Nuria B. Centeno
- Computer-Assisted Drug Design
Laboratory, Research Programme on Biomedical Informatics (GRIB), IMIM-Universitat Pompeu Fabra, Dr. Aiguader 88, E-08003
Barcelona, Spain
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18
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El Bakali J, Maingot L, Dumont J, Host H, Hocine A, Cousaert N, Dassonneville S, Leroux F, Deprez B, Deprez-Poulain R. Novel selective inhibitors of neutral endopeptidase: discovery by screening and hit-to-lead optimisation. MEDCHEMCOMM 2012. [DOI: 10.1039/c2md00287f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Agalave SG, Maujan SR, Pore VS. Click Chemistry: 1,2,3-Triazoles as Pharmacophores. Chem Asian J 2011; 6:2696-718. [DOI: 10.1002/asia.201100432] [Citation(s) in RCA: 907] [Impact Index Per Article: 69.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2011] [Indexed: 12/16/2022]
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20
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Wayman CP, Baxter D, Turner L, Van Der Graaf PH, Naylor AM. UK-414,495, a selective inhibitor of neutral endopeptidase, potentiates pelvic nerve-stimulated increases in female genital blood flow in the anaesthetized rabbit. Br J Pharmacol 2010; 160:51-9. [PMID: 20412068 DOI: 10.1111/j.1476-5381.2010.00691.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND AND PURPOSE Female sexual arousal consists of a number of physiological responses resulting from increased genital blood. Vasoactive intestinal peptide (VIP), neuropeptide Y and to a lesser extent nitric oxide are neurotransmitters found in the vasculature of the genitalia. Neutral endopeptidase (NEP) modulates the activity of neuropeptides including VIP. The aim of this study was to investigate the control of genital blood flow by VIP and endogenous neuropeptides using a selective NEP inhibitor [UK-414,495, ((R)-2-({1-[(5-ethyl-1,3,4-thiadiazol-2-yl) carbamoyl]cyclopentyl}methyl) valeric acid)]. EXPERIMENTAL APPROACH Vaginal and clitoral blood flow (VBF and CBF) were monitored using laser Doppler in terminally anaesthetized New Zealand rabbits. Increases in VBF and CBF were induced by either electrical stimulation of the pelvic nerve or by i.v. infusion of VIP. KEY RESULTS Stimulation of the pelvic nerve increased VBF and CBF, compared with basal flow. Increases were mimicked by infusion of exogenous VIP. UK-414,495 dose-dependently potentiated pelvic nerve-stimulated increases in VBF (EC(50)= 37 +/- 9 nM; 3.6 x IC(50) rabbit NEP). Nerve-stimulated increases in VBF and CBF were both enhanced after UK-414,495. UK-414,495 increased the amplitude and duration of VIP-induced increases in VBF. UK-414,495 had no effect on basal VBF or cardiovascular parameters. CONCLUSIONS AND IMPLICATIONS Inhibition of NEP potentiates pelvic nerve-stimulated increases in genital blood flow. This suggests that the endogenous neurotransmitter mediating genital blood flow is a substrate for NEP (most likely VIP). NEP inhibitors may restore sexual arousal in women adversely affected by female sexual arousal disorder.
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Affiliation(s)
- C P Wayman
- Genitourinary Research Unit, Pfizer Global Research & Development, Sandwich, UK.
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21
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Tibiletti F, Simonetti M, Nicholas KM, Palmisano G, Parravicini M, Imbesi F, Tollari S, Penoni A. One-pot synthesis of meridianins and meridianin analogues via indolization of nitrosoarenes. Tetrahedron 2010. [DOI: 10.1016/j.tet.2009.12.020] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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22
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Carmona AK, Juliano MA, Juliano L. The use of Fluorescence Resonance Energy Transfer (FRET) peptidesfor measurement of clinically important proteolytic enzymes. AN ACAD BRAS CIENC 2009; 81:381-92. [DOI: 10.1590/s0001-37652009000300005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2008] [Accepted: 09/09/2008] [Indexed: 11/21/2022] Open
Abstract
Proteolytic enzymes have a fundamental role in many biological processes and are associated with multiple pathological conditions. Therefore, targeting these enzymes may be important for a better understanding of their function and development of therapeutic inhibitors. Fluorescence Resonance Energy Transfer (FRET) peptides are convenient tools for the study of peptidases specificity as they allow monitoring of the reaction on a continuous basis, providing a rapid method for the determination of enzymatic activity. Hydrolysis of a peptide bond between the donor/acceptor pair generates fluorescence that permits the measurement of the activity of nanomolar concentrations of the enzyme. The assays can be performed directly in a cuvette of the fluorimeter or adapted for determinations in a 96-well fluorescence plate reader. The synthesis of FRET peptides containing ortho-aminobenzoic acid (Abz) as fluorescent group and 2, 4-dinitrophenyl (Dnp) or N-(2, 4-dinitrophenyl)ethylenediamine (EDDnp) as quencher was optimized by our group and became an important line of research at the Department of Biophysics of the Federal University of São Paulo. Recently, Abz/Dnp FRET peptide libraries were developed allowing high-throughput screening of peptidases substrate specificity. This review presents the consolidation of our research activities undertaken between 1993 and 2008 on the synthesis of peptides and study of peptidases specificities.
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23
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Voitekhovich SV, Gaponik PN, Lyakhov AS, Filipova JV, Sukhanova AG, Sukhanov GT, Ivashkevich OA. N-Alkylation of 4-nitro-1,2,3-triazole revisited. Detection and characterization of the N3-ethylation product, 1-ethyl-5-nitro-1,2,3-triazole. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.03.076] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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24
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Nakaike Y, Hayashi D, Nishiwaki N, Tobe Y, Ariga M. Formylnitroenamines: useful building blocks for nitrated pyridones and aminopyridines with functional groups. Org Biomol Chem 2009; 7:325-34. [PMID: 19109678 DOI: 10.1039/b815306j] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
beta-formyl-beta-nitroenamines possess both an electrophilic formyl group and a nucleophilic amino group and, therefore, serve as C3N1 building blocks having a nitro group to afford nitropyridones and aminonitropyridines with a functional group at the 3-position. Upon treatment with malonic acid derivatives or beta-keto esters, nitropyridones were obtained, whereas reactions with functionalized acetonitriles afford aminonitropyridines, via a formal transfer of an alkyl group from the ring nitrogen to the imino group. These procedures provide practical and useful methods for preparation of heterocycles with a nitro group.
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Affiliation(s)
- Yumi Nakaike
- Division of Frontier Materials Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
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25
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Meng X, Maggs JL, Pryde DC, Planken S, Jenkins RE, Peakman TM, Beaumont K, Kohl C, Park BK, Stachulski AV. Cyclization of the acyl glucuronide metabolite of a neutral endopeptidase inhibitor to an electrophilic glutarimide: synthesis, reactivity, and mechanistic analysis. J Med Chem 2007; 50:6165-76. [PMID: 17985860 DOI: 10.1021/jm0706766] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The neutral endopeptidase inhibitor (2R)-2-[(1-{[(5-ethyl-1,3,4-thiadiazol-2-yl)amino]carbonyl}cyclopentyl)methyl]pentanoic acid 2 is metabolized to acyl glucuronide 3. Unprecedentedly, at pH 7.4, 3 does not undergo the O-acyl migration characteristic of acyl glucuronides but rapid, eliminative cyclization (t1/2 at 37 degrees C, 10.2 min) to glutarimide 4. Glucuronide 3 was synthesized efficiently via acylation of benzylglucuronate with N-benzyloxymethyl-protected 2. Glucuronide and imide reacted rapidly in aqueous solution, pH 7.4, with amino acids and glutathione to form stable amides and unstable thioesters. Imide 4 acylated eight lysine Nepsilon-amino groups of human serum albumin. Rapid cyclization of 3 was attributed to attack on the ester linkage by an unusually nucleophilic glutaramide NH (pKa in 2 = 9.76). N-propyl 3 was refractory to acyl migration and cyclization. This suggested a synthetic strategy for preparing analogues of 2 that form chemically stable acyl glucuronides.
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Affiliation(s)
- Xiaoli Meng
- The Robert Robinson Laboratories, Department of Chemistry, University of Liverpool, Liverpool, United Kingdom
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26
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Dolle RE, Le Bourdonnec B, Goodman AJ, Morales GA, Salvino JM, Zhang W. Comprehensive survey of chemical libraries for drug discovery and chemical biology: 2006. ACTA ACUST UNITED AC 2007; 9:855-902. [PMID: 17877417 DOI: 10.1021/cc700111e] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Roland E Dolle
- Adolor Corporation, 700 Pennsylvania Drive, Exton, Pennsylvania 19341, USA.
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27
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Abstract
Dysfunction of female sexual desire, arousal, or orgasm affects approximately 30% of women. Early attempts to treat female sexual dysfunction arose out of programs developed for male erectile dysfunction and have proven largely unsuccessful. A new wave of targets is now being pursued; many of these targets are postulated to modulate central pathways. Classical neurotransmitter systems, such as dopamine and serotonin, as well as the neuropeptide melanocortin, are receiving the most attention. Early clinical data look promising; however, clinical trial methodology in female sexual dysfunction is not well developed and only further testing will determine whether these treatments meet regulatory hurdles and satisfy patient need.
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Affiliation(s)
- Alan D Brown
- Pfizer Global Research and Development, Sandwich, United Kingdom.
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28
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Pruhs RJ, Peña RT, Quock RM. Antagonism of phosphoramidon-induced antinociception in mice by μ- but not κ-opioid receptor blockers. Life Sci 2007; 80:1816-20. [PMID: 17379253 DOI: 10.1016/j.lfs.2007.02.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2006] [Revised: 01/27/2007] [Accepted: 02/15/2007] [Indexed: 11/19/2022]
Abstract
Intracerebroventricular (i.c.v.) administration of the neutral endopeptidase 24.11-inhibitor phosphoramidon evoked a dose-dependent antinociceptive effect in the mouse acetic acid abdominal constriction test. The present study was conducted to identify the opioid receptor subtype(s) that mediate phosphoramidon antinociception in this paradigm. Mice were pretreated with different opioid antagonists prior to being challenged with phosphoramidon, i.c.v., the mu-opioid agonist sufentanil, s.c., or the kappa-opioid agonist U-50,488H, s.c. Naltrexone significantly attenuated phosphoramidon-induced antinociception at an i.c.v. dose that also blocked both sufentanil and U-50,488H. The mu-opioid antagonist beta-funaltrexamine (beta-FNA) blocked phosphoramidon and sufentanil at an i.c.v. dose that did not block U-50,488H. The kappa-opioid antagonist nor-binaltorphimine (nor-BNI) produced dose-related effects. A low dose (10 microg) of nor-BNI had no effect on either phosphoramidon or sufentanil but did reduce U-50,488H antinociception. A higher dose (30 microg) of nor-BNI blocked phosphoramidon, sufentanil, and U-50,488H, suggesting a loss of kappa-opioid receptor selectivity at this dose. These findings suggest that mu- but not kappa-opioid receptors mediate phosphoramidon-induced antinociception in the abdominal constriction test.
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MESH Headings
- 3,4-Dichloro-N-methyl-N-(2-(1-pyrrolidinyl)-cyclohexyl)-benzeneacetamide, (trans)-Isomer/pharmacology
- Analgesia
- Animals
- Glycopeptides/antagonists & inhibitors
- Glycopeptides/pharmacology
- Male
- Mice
- Mice, Inbred ICR
- Naltrexone/analogs & derivatives
- Naltrexone/pharmacology
- Narcotic Antagonists/pharmacology
- Receptors, Opioid, kappa/agonists
- Receptors, Opioid, kappa/antagonists & inhibitors
- Receptors, Opioid, kappa/physiology
- Receptors, Opioid, mu/agonists
- Receptors, Opioid, mu/antagonists & inhibitors
- Receptors, Opioid, mu/physiology
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Affiliation(s)
- Ronald J Pruhs
- Department of Pediatric Dentistry, Marquette University School of Dentistry, Milwaukee, WI 53201-1881, United States
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29
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Barros NMT, Campos M, Bersanetti PA, Oliveira V, Juliano MA, Boileau G, Juliano L, Carmona AK. Neprilysin carboxydipeptidase specificity studies and improvement in its detection with fluorescence energy transfer peptides. Biol Chem 2007; 388:447-55. [PMID: 17391066 DOI: 10.1515/bc.2007.048] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
We examined the substrate specificity of the carboxydipeptidase activity of neprilysin (NEP) using fluorescence resonance energy transfer (FRET) peptides containing ortho-aminobenzoyl (Abz) and 2,4-dinitrophenyl (Dnp) as a donor/acceptor pair. Two peptide series with general sequences Abz-RXFK(Dnp)-OH and Abz-XRFK(Dnp)-OH (X denotes the position of the altered amino acid) were synthesized to study P1 (cleavage at the X-F bond) and P2 (cleavage at R-F bond) specificity, respectively. In these peptides a Phe residue was fixed in P1' to fulfill the well-known NEP S1' site requirement for a hydrophobic amino acid. In addition, we explored NEP capability to hydrolyze bradykinin (RPPGFSPFR) and its fluorescent derivative Abz-RPPGFSPFRQ-EDDnp (EDDnp=2,4-dinitrophenyl ethylenediamine). The enzyme acts upon bradykinin mainly as a carboxydipeptidase, preferentially cleaving Pro-Phe over the Gly-Phe bond in a 9:1 ratio, whereas Abz-RPPGFSPFRQ-EDDnp was hydrolyzed at the same bonds but at an inverted proportion of 1:9. The results show very efficient interaction of the substrates' C-terminal free carboxyl group with site S2' of NEP, confirming the enzyme's preference to act as carboxydipeptidase at substrates with a free carboxyl-terminus. Using data gathered from our study, we developed sensitive and selective NEP substrates that permit continuous measurement of the enzyme activity, even in crude tissue extracts.
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Affiliation(s)
- Nilana M T Barros
- Department of Biophysics, Universidade Federal de São Paulo, Escola Paulista de Medicina, Rua Três de Maio 100, 04044-020 São Paulo, Brazil
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