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Sharma K, Sharma KK, Mahindra A, Sehra N, Bagra N, Aaghaz S, Parmar R, Rathod GK, Jain R. Design, synthesis, and applications of ring-functionalized histidines in peptide-based medicinal chemistry and drug discovery. Med Res Rev 2023. [PMID: 36710510 DOI: 10.1002/med.21936] [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: 03/09/2022] [Revised: 12/12/2022] [Accepted: 01/06/2023] [Indexed: 01/31/2023]
Abstract
Modified and synthetic α-amino acids are known to show diverse applications. Histidine, which possesses numerous applications when subjected to synthetic modifications, is one such amino acid. The utility of modified histidines varies widely from remarkable biological activities to catalysis, and from nanotechnology to polymer chemistry. This renders histidine residue an important place in scientific research. Histidine is a well-studied scaffold and constitutes the active site of various enzymes catalyzing important reactions in the biological systems. A rational modification in histidine structure with a distinctly developed protocol extensively changes its physical and chemical properties. The utilization of modified histidines in search of potent, target selective and proteostable scaffolds is vital in the development of bioactive peptides with enhanced drug-likeliness. This review is a compilation and analysis of reported side-chain ring modifications at histidine followed by applications of ring-modified histidines in the synthesis of various categories of bioactive peptides and peptidomimetics.
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Affiliation(s)
- Komal Sharma
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Nagar, Punjab, India
| | - Krishna K Sharma
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Nagar, Punjab, India
| | - Amit Mahindra
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Nagar, Punjab, India
| | - Naina Sehra
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Nagar, Punjab, India
| | - Nitin Bagra
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Nagar, Punjab, India
| | - Shams Aaghaz
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Nagar, Punjab, India
| | - Rajesh Parmar
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Nagar, Punjab, India
| | - Gajanan K Rathod
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Nagar, Punjab, India
| | - Rahul Jain
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Nagar, Punjab, India
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2
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Sharma K, Aaghaz S, Maurya IK, Singh S, Rudramurthy SM, Kumar V, Tikoo K, Jain R. Ring-Modified Histidine-Containing Cationic Short Peptides Exhibit Anticryptococcal Activity by Cellular Disruption. Molecules 2022; 28:molecules28010087. [PMID: 36615282 PMCID: PMC9821961 DOI: 10.3390/molecules28010087] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/19/2022] [Accepted: 12/19/2022] [Indexed: 12/25/2022] Open
Abstract
Delineation of clinical complications secondary to fungal infections, such as cryptococcal meningitis, and the concurrent emergence of multidrug resistance in large population subsets necessitates the need for the development of new classes of antifungals. Herein, we report a series of ring-modified histidine-containing short cationic peptides exhibiting anticryptococcal activity via membrane lysis. The N-1 position of histidine was benzylated, followed by iodination at the C-5 position via electrophilic iodination, and the dipeptides were obtained after coupling with tryptophan. In vitro analysis revealed that peptides Trp-His[1-(3,5-di-tert-butylbenzyl)-5-iodo]-OMe (10d, IC50 = 2.20 μg/mL; MIC = 4.01 μg/mL) and Trp-His[1-(2-iodophenyl)-5-iodo)]-OMe (10o, IC50 = 2.52 μg/mL; MIC = 4.59 μg/mL) exhibit promising antifungal activities against C. neoformans. When administered in combination with standard drug amphotericin B (Amp B), a significant synergism was observed, with 4- to 16-fold increase in the potencies of both peptides and Amp B. Electron microscopy analysis with SEM and TEM showed that the dipeptides primarily act via membrane disruption, leading to pore formation and causing cell lysis. After entering the cells, the peptides interact with the intracellular components as demonstrated by confocal laser scanning microscopy (CLSM).
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Affiliation(s)
- Komal Sharma
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar 160 062, Punjab, India
| | - Shams Aaghaz
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar 160 062, Punjab, India
| | - Indresh Kumar Maurya
- Center of Infectious Diseases, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar 160 062, Punjab, India
| | - Shreya Singh
- Department of Medical Microbiology, Post Graduate Institute of Medical Education and Research, Sector 12, Chandigarh 160 012, India
| | - Shivaprakash M. Rudramurthy
- Department of Medical Microbiology, Post Graduate Institute of Medical Education and Research, Sector 12, Chandigarh 160 012, India
| | - Vinod Kumar
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar 160 062, Punjab, India
| | - Kulbhushan Tikoo
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar 160 062, Punjab, India
| | - Rahul Jain
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar 160 062, Punjab, India
- Correspondence:
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3
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Synthesis of 5‐Alkynyl and 2,5‐Dialkynyl‐L‐histidines. ChemistrySelect 2022. [DOI: 10.1002/slct.202200264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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4
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Zwick CR, Sosa MB, Renata H. Modular Chemoenzymatic Synthesis of GE81112 B1 and Related Analogues Enables Elucidation of Its Key Pharmacophores. J Am Chem Soc 2021; 143:1673-1679. [PMID: 33416325 DOI: 10.1021/jacs.0c13424] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The GE81112 complex has garnered much interest due to its broad antimicrobial properties and unique ability to inhibit bacterial translation initiation. Herein we report the use of a chemoenzymatic strategy to complete the first total synthesis of GE81112 B1. By pairing iron and α-ketoglutarate dependent hydroxylases found in GE81112 biosynthesis with traditional synthetic methodology, we were able to access the natural product in 11 steps (longest linear sequence). Following this strategy, 10 GE81112 B1 analogues were synthesized, allowing for identification of its key pharmacophores. A key feature of our medicinal chemistry effort is the incorporation of additional biocatalytic hydroxylations in modular analogue synthesis to rapidly enable exploration of relevant chemical space.
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Affiliation(s)
- Christian R Zwick
- Department of Chemistry, The Scripps Research Institute, 130 Scripps Way, Jupiter, Florida 33458, United States
| | - Max B Sosa
- Department of Chemistry, The Scripps Research Institute, 130 Scripps Way, Jupiter, Florida 33458, United States
| | - Hans Renata
- Department of Chemistry, The Scripps Research Institute, 130 Scripps Way, Jupiter, Florida 33458, United States
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Sharma M, Prasher P. An epigrammatic status of the ' azole'-based antimalarial drugs. RSC Med Chem 2020; 11:184-211. [PMID: 33479627 PMCID: PMC7536834 DOI: 10.1039/c9md00479c] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 11/26/2019] [Indexed: 11/21/2022] Open
Abstract
The development of multidrug resistance in the malarial parasite has sabotaged majority of the eradication efforts by restraining the inhibition profile of first line as well as second line antimalarial drugs, thus necessitating the development of novel pharmaceutics constructed on appropriate scaffolds with superior potency against the drug-resistant and drug-susceptible Plasmodium parasite. Over the past decades, the infectious malarial parasite has developed resistance against most of the contemporary therapeutics, thus necessitating the rational development of novel approaches principally focused on MDR malaria. This review presents an epigrammatic collation of the epidemiology and the contemporary antimalarial therapeutics based on the 'azole' motif.
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Affiliation(s)
- Mousmee Sharma
- Department of Chemistry , Uttaranchal University , Dehradun 248007 , India
- UGC Sponsored Centre for Advanced Studies , Department of Chemistry , Guru Nanak Dev University , Amritsar 143005 , India
| | - Parteek Prasher
- Department of Chemistry , University of Petroleum & Energy Studies , Dehradun 248007 , India . ;
- UGC Sponsored Centre for Advanced Studies , Department of Chemistry , Guru Nanak Dev University , Amritsar 143005 , India
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Tao L, Pan X, Ji M, Chen X, Liu Z. Efficient synthesis and cytotoxicity of novel microtubule-stabilizing agent ceratamine A analogues. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.03.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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7
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Yu S, Li F, Jeon H, Lee S, Shin J, Kim S. Total Syntheses of Isowondonins Based on a Biosynthetic Pathway. Org Lett 2016; 18:2986-9. [DOI: 10.1021/acs.orglett.6b01336] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shuai Yu
- College
of Pharmacy, Seoul National University, Seoul 151-742, Korea
| | - Feng Li
- College
of Pharmacy, Seoul National University, Seoul 151-742, Korea
| | - Hongjun Jeon
- College
of Pharmacy, Seoul National University, Seoul 151-742, Korea
| | - Seokwoo Lee
- College
of Pharmacy, Seoul National University, Seoul 151-742, Korea
| | - Jongheon Shin
- College
of Pharmacy, Seoul National University, Seoul 151-742, Korea
| | - Sanghee Kim
- College
of Pharmacy, Seoul National University, Seoul 151-742, Korea
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8
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Meena CL, Thakur A, Nandekar PP, Sharma SS, Sangamwar AT, Jain R. Synthesis and biology of ring-modified l-Histidine containing thyrotropin-releasing hormone (TRH) analogues. Eur J Med Chem 2016; 111:72-83. [PMID: 26854379 DOI: 10.1016/j.ejmech.2016.01.038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 01/19/2016] [Accepted: 01/20/2016] [Indexed: 12/18/2022]
Abstract
Thyrotropin-releasing hormone (TRH) analogues bearing halogen groups (Cl, Br and I) at the C-2 and/or C-5 position, and the alkyl group (CH3, C2H5, C3H7, CH2C6H5) at the N-1 position of the imidazole ring of the central histidine residue were synthesized and evaluated for the receptor binding, calcium mobilization (FLIPR), and IP-1 assay at the HEK mTRHR1 and HEK mTRHR2 expressing cell lines. The most promising analogue 7k showed 925-fold selectivity for HEK mTRH-R2 receptor subtype in the IP-1 assay, 272-fold selectivity for HEK mTRH-R2 receptor subtype in the FLIPR assay, and 21-fold receptor binding specificity at HEK TRH-R2 receptor subtype. The peptide 7k was evaluated in vitro in a brain membrane competitive binding assay, and for stability analysis in the presence of TRH-DE, in vivo. The analogue 7k showed decrease in the sleeping time by more than 76% in a pentobarbital-induced sleeping assay, and showed comparatively less elevation in the TSH level in the blood, in vivo. The computational homology modeling of TRH-R1 and TRH-R2 and docking study with the most potent peptide 7k provide impetus to design CNS specific TRH analogues.
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Affiliation(s)
- Chhuttan L Meena
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Sector 67, S. A. S. Nagar, Punjab 160 062, India
| | - Avinash Thakur
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Sector 67, S. A. S. Nagar, Punjab 160 062, India
| | - Prajwal P Nandekar
- Department of Pharmacoinformatics, National Institute of Pharmaceutical Education and Research, Sector 67, S. A. S. Nagar, Punjab 160 062, India
| | - Shyam S Sharma
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Sector 67, S. A. S. Nagar, Punjab 160 062, India
| | - Abhay T Sangamwar
- Department of Pharmacoinformatics, National Institute of Pharmaceutical Education and Research, Sector 67, S. A. S. Nagar, Punjab 160 062, India
| | - Rahul Jain
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Sector 67, S. A. S. Nagar, Punjab 160 062, India.
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9
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Meena CL, Thakur A, Nandekar PP, Sangamwar AT, Sharma SS, Jain R. Synthesis of CNS active thyrotropin-releasing hormone (TRH)-like peptides: Biological evaluation and effect on cognitive impairment induced by cerebral ischemia in mice. Bioorg Med Chem 2015. [DOI: 10.1016/j.bmc.2015.07.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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10
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Saada MC, Vullo D, Montero JL, Scozzafava A, Supuran CT, Winum JY. Mono- and di-halogenated histamine, histidine and carnosine derivatives are potent carbonic anhydrase I, II, VII, XII and XIV activators. Bioorg Med Chem 2014; 22:4752-8. [PMID: 25082511 DOI: 10.1016/j.bmc.2014.07.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 06/24/2014] [Accepted: 07/02/2014] [Indexed: 12/17/2022]
Abstract
Mono- and di-halogenated histamines, l-histidine methyl ester derivatives and carnosine derivatives incorporating chlorine, bromine and iodine were prepared and investigated as activators of five carbonic anhydrase (CA, EC 4.2.1.1) isoforms, the cytosolic hCA I, II and VII, and the transmembrane hCA XII and XIV. All of them were activated in a diverse manner by the investigated compounds, with a distinct activation profile.
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Affiliation(s)
- Mohamed-Chiheb Saada
- Institut des Biomolécules Max Mousseron (IBMM)), UMR 5247 CNRS-UM1-UM2 Bâtiment de Recherche Max Mousseron, Ecole Nationale Supérieure de Chimie de Montpellier, 8 rue de l'Ecole Normale, 34296 Montpellier Cedex, France
| | - Daniela Vullo
- Università degli Studi di Firenze, Dipartimento di Chimica, Lab. Chimica Bioinorganica, Via della Lastruccia 3, 50019 Sesto Fiorentino (Florence), Italy
| | - Jean-Louis Montero
- Institut des Biomolécules Max Mousseron (IBMM)), UMR 5247 CNRS-UM1-UM2 Bâtiment de Recherche Max Mousseron, Ecole Nationale Supérieure de Chimie de Montpellier, 8 rue de l'Ecole Normale, 34296 Montpellier Cedex, France
| | - Andrea Scozzafava
- Università degli Studi di Firenze, Dipartimento di Chimica, Lab. Chimica Bioinorganica, Via della Lastruccia 3, 50019 Sesto Fiorentino (Florence), Italy
| | - Claudiu T Supuran
- Università degli Studi di Firenze, Dipartimento di Chimica, Lab. Chimica Bioinorganica, Via della Lastruccia 3, 50019 Sesto Fiorentino (Florence), Italy; Università degli Studi di Firenze, NEUROFARBA Dept., Sezione di Scienze Farmaceutiche e Nutraceutiche, Via Ugo Schiff 6, I-50019 Sesto Fiorentino (Florence), Italy.
| | - Jean-Yves Winum
- Institut des Biomolécules Max Mousseron (IBMM)), UMR 5247 CNRS-UM1-UM2 Bâtiment de Recherche Max Mousseron, Ecole Nationale Supérieure de Chimie de Montpellier, 8 rue de l'Ecole Normale, 34296 Montpellier Cedex, France.
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11
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Mahindra A, Bagra N, Jain R. Palladium-Catalyzed Regioselective C-5 Arylation of Protected l-Histidine: Microwave-Assisted C–H Activation Adjacent to Donor Arm. J Org Chem 2013; 78:10954-9. [DOI: 10.1021/jo401934q] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Amit Mahindra
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Sector 67, SAS Nagar, Punjab 160 062, India
| | - Nitin Bagra
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Sector 67, SAS Nagar, Punjab 160 062, India
| | - Rahul Jain
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Sector 67, SAS Nagar, Punjab 160 062, India
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12
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Ando N, Terashima S. Synthesis and matrix metalloproteinase-12 inhibitory activity of ageladine A analogs. Chem Pharm Bull (Tokyo) 2011; 59:579-96. [PMID: 21532196 DOI: 10.1248/cpb.59.579] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Synthesis of the 37 ageladine A analogs was accomplished by employing the total synthetic route of natural ageladine A previously explored by us. From the matrix metalloproteinase-12 (MMP-12) inhibitory activity assay carried out using the novel analogs, it appeared evident that the halogen atom at the 2-position of pyrrole ring was essential for the inhibitory activity and that the introduction of a bromine atom into the 4-position of pyrrole ring is very effective for producing potent activity. In addition, exchange of the pyrrole ring to an imidazole ring was extremely effective in increasing activity, and the analog 29 thus obtained was found to show approximately 4 times more potent activity than natural ageladine A.
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Affiliation(s)
- Naoki Ando
- Discovery Research Laboratories, Kyorin Pharmaceutical Co., Ltd., Tochigi, Japan.
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13
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Saada MC, Vullo D, Montero JL, Scozzafava A, Winum JY, Supuran CT. Carbonic anhydrase I and II activation with mono- and dihalogenated histamine derivatives. Bioorg Med Chem Lett 2011; 21:4884-7. [DOI: 10.1016/j.bmcl.2011.06.030] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2011] [Revised: 06/06/2011] [Accepted: 06/08/2011] [Indexed: 10/18/2022]
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14
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Eißmann F, Weber E. Synthesis and structural characterization of amino acid and peptide derivatives featuring N-(p-bromobenzoyl) substituents as promising connection unit for bio-inspired hybrid compounds. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.03.058] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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15
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Nayak SK, Monga V, Kaur N, Jain R. Facile regiospecific syntheses of N-α,N-1(τ)-dialkyl-l-histidines. J Heterocycl Chem 2009. [DOI: 10.1002/jhet.5570440607] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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16
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Pahwa S, Chavan AG, Jain R, Roy N. Target-specific anti-fungal discovery by targeting Geotrichum candidum histidinol dehydrogenase: a hybrid approach. Chem Biol Drug Des 2008; 72:229-34. [PMID: 18715230 DOI: 10.1111/j.1747-0285.2008.00692.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This study describes a hybrid approach of screening substrate analogue inhibitors of histidinol dehydrogenase. Imidazole derivative library of approximately 400 compounds classified using Hierarchical cluster analysis, representative compounds of each class were tested in enzymatic assay and used for the development of quantitative structure-activity relationship models. Rest of the compounds in the library were screened using developed models and compounds predicted active were retested. 60% of the predicted compounds showed enzyme inhibition activity with IC(50) values ranged between 5.2 and 58.0 microm range and have fungistatic activity.
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Affiliation(s)
- Sonia Pahwa
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research, Sector, Punjab, India
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17
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2-(1H-Imidazol-4-yl)ethanamine and 2-(1H-pyrazol-1-yl)ethanamine side chain variants of the IGF-1R inhibitor BMS-536924. Bioorg Med Chem Lett 2008; 18:1702-7. [DOI: 10.1016/j.bmcl.2008.01.049] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2007] [Revised: 01/11/2008] [Accepted: 01/14/2008] [Indexed: 12/21/2022]
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18
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Skoumbourdis AP, Moore S, Landsman M, Thomas CJ. Synthesis of Substituted 2-phenylhistamines via a Microwave Promoted Suzuki Coupling. Tetrahedron Lett 2007; 48:9140-9143. [PMID: 19112479 DOI: 10.1016/j.tetlet.2007.10.119] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Substitutions on the 2-position of the imidizole ring of histamine have proven useful in a number of biochemical settings. Current art for the synthesis of these constructs relies upon a cumbersome and low-yielding condensation reaction. Here-in we report a new procedure for the synthesis of a series of substituted 2-phenylhistamines utilizing a microwave-promoted Suzuki coupling.
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Affiliation(s)
- Amanda P Skoumbourdis
- NIH Chemical Genomics Center, National Human Genome Research Institute, NIH 9800 Medical Center Drive, MSC 3370 Bethesda, MD 20892-3370 USA
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19
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Cerezo V, Afonso A, Planas M, Feliu L. Synthesis of 5-arylhistidines via a Suzuki–Miyaura cross-coupling. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.08.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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20
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Ando N, Terashima S. Synthesis and matrix metalloproteinase (MMP)-12 inhibitory activity of ageladine A and its analogs. Bioorg Med Chem Lett 2007; 17:4495-9. [PMID: 17574851 DOI: 10.1016/j.bmcl.2007.06.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2007] [Revised: 05/25/2007] [Accepted: 06/01/2007] [Indexed: 10/23/2022]
Abstract
Ageladine A (1) and its analogs 2-10 were expeditiously synthesized by featuring the biosynthetic route proposed for 1 (for 1-10) and by employing 2-(N-t-butoxycarbonylamino)imidazol-4-carbaldehyde as the starting material (for 1-8). From MMP-12 inhibitory activity assay, it appeared evident that the two bromine atoms and the three NH groups (1-NH, 14-NH, and 15-NH2) were indispensable for 1 to exhibit excellent activity.
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Affiliation(s)
- Naoki Ando
- Discovery Research Laboratories, Kyorin Pharmaceutical Co. Ltd, 2399-1, Nogi, Nogi-machi, Shimotsuga-gun, Tochigi 329-0114, Japan.
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22
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Chandana P, Nayyar A, Jain R. Trityl-Directed Regiospecific Synthesis of 2,3-Disubstituted Bioimidazoles. SYNTHETIC COMMUN 2003. [DOI: 10.1081/scc-120022183] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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23
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Jain R, Vangapandu S, Jain M, Kaur N, Singh S, Singh PP. Antimalarial activities of ring-substituted bioimidazoles. Bioorg Med Chem Lett 2002; 12:1701-4. [PMID: 12067541 DOI: 10.1016/s0960-894x(02)00289-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
We report in vitro antimalarial activities against chloroquine sensitive and resistant Plasmodium falciparum strains, and in vivo activities against Plasmodium berghei in mice for four series of ring-substituted-L-histidines and histamines.
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Affiliation(s)
- Rahul Jain
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar, Punjab 160 062, India.
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24
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Jain R, Singh J, Perlman JH, Gershengorn MC. Synthesis and biology of new thyrotropin-releasing hormone (TRH) analogues. Bioorg Med Chem 2002; 10:189-94. [PMID: 11738621 DOI: 10.1016/s0968-0896(01)00265-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
We report synthesis and biological activities of several thyrotropin-releasing hormone (TRH) analogues in which the N-terminal pyroglutamic acid residue has been replaced with various carboxylic acids and the central histidine is modified with substituted-imidazole derivatives.
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Affiliation(s)
- Rahul Jain
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar, 160 062, Punjab, India.
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25
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Dolensky B, Kirk KL. New building blocks for fluorinated imidazole derivatives: preparation of beta-fluoro- and beta,beta-difluorohistamine. J Org Chem 2001; 66:4687-91. [PMID: 11421793 DOI: 10.1021/jo0102415] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We demonstrate that "FBr" addition to 1-trityl-4-vinyl-1H-imidazole (7) provides a convenient route to side-chain-fluorinated histamines. Thus, addition of "FBr" to the double bond of 7 occurs with Markovnikov regioselectivity to produce 4-(2-bromo-1-fluoroethyl)-1-trityl-1H-imidazole (8). Substitution with azide, reduction, and removal of the trityl group provide beta-fluorohistamine (1) as the dihydrochloride. Elimination of HBr from 8 followed by a second addition of "FBr" gives 4-(2-bromo-1,1-difluoroethyl)-1-trityl-1H-imidazole (15). This was similarly converted to beta,beta-difluorohistamine (2) as the dihydrochloride.
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Affiliation(s)
- B Dolensky
- Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
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Narayanan S, Vangapandu S, Jain R. Regiospecific Synthesis of 2,3-Disubstituted-l-Histidines and Histamines. Bioorg Med Chem Lett 2001; 11:1133-6. [PMID: 11354360 DOI: 10.1016/s0960-894x(01)00154-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Regiospecific synthesis of 2,3-disubstituted-L-histidines and 2,3-disubstituted histamines starting from L-histidine methyl ester and histamine is reported. The key step involves homolytic free radical alkylation via silver catalyzed oxidative decarboxylation of alkylcarboxylic acids with ammonium persulfate.
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Affiliation(s)
- S Narayanan
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Punjab, India
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