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Ghosh U, Kumar V, Singh G, Kanti Chakraborty T. Conformation Based in silico Studies of Cyclic Tetrapeptides with βγ Fused Turns as Thrombin Inhibitors. ChemistrySelect 2023. [DOI: 10.1002/slct.202204761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Affiliation(s)
- Uttam Ghosh
- Department of Organic Chemistry Indian Institute of Science Bengaluru 560012 India
| | - Vikash Kumar
- CSIR-Central Drug Research Institute Lucknow 226031 India
| | - Gajendra Singh
- CSIR-Central Drug Research Institute Lucknow 226031 India
- School of Life Sciences Central University of Rajasthan Bandar Sindri Ajmer 305817 Rajasthan India
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Bollu A, Giri P, Dalabehera NR, Asmi AR, Sharma NK. Unnatural Amino Acid: 4-Aminopyrazolonyl Amino Acid Comprising Tri-Peptides Forms Organogel With Co-Solvent (EtOAc:Hexane). Front Chem 2022; 10:821971. [PMID: 35601543 PMCID: PMC9117720 DOI: 10.3389/fchem.2022.821971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 03/29/2022] [Indexed: 11/26/2022] Open
Abstract
Ampyrone is an amino-functionalized heterocyclic pyrazolone derivative that possesses therapeutic values such as analgesic, anti-inflammatory, and antipyretics. The chemical structure of ampyrone exhibits excellent hydrogen bonding sites and is considered as the potential scaffold of supramolecular self-assembly. Recently, this molecule has been derived into unnatural amino acids such as aminopyrazolone amino acid and its peptides. This report describes that one of its amino acids, O-alkylated ampyrone, containing hybrid (α/β) peptides forms organogel after sonication at 50–55°C with 0.7–0.9% (w/v) in ethyl acetate: hexane (1:3). The formation/morphology of such organogels is studied by nuclear magnetic resonance Fourier-transform infrared (FT-IR), circular dichroism (CD), scanning electron microscope (SEM), transmission electron microscopy (TEM), powder X-ray diffraction (Powder-XRD), and thermogravimetric analysis (TGA). Energy-minimized conformation of APA-peptides reveals the possibility of intermolecular hydrogen bonding. Hence, APA-peptides are promising peptidomimetics for the organogel-peptides.
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Affiliation(s)
- Amarnath Bollu
- National Institute of Science Education and Research (NISER), Bhubaneswar, India.,Homi Bhabha National Institute (HBNI), Mumbai, India
| | - Prajnanandan Giri
- National Institute of Science Education and Research (NISER), Bhubaneswar, India.,Homi Bhabha National Institute (HBNI), Mumbai, India
| | - Nihar Ranjan Dalabehera
- National Institute of Science Education and Research (NISER), Bhubaneswar, India.,Homi Bhabha National Institute (HBNI), Mumbai, India
| | - Asmita Rani Asmi
- National Institute of Science Education and Research (NISER), Bhubaneswar, India.,Homi Bhabha National Institute (HBNI), Mumbai, India
| | - Nagendra K Sharma
- National Institute of Science Education and Research (NISER), Bhubaneswar, India.,Homi Bhabha National Institute (HBNI), Mumbai, India
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3
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Ghosh U, Soni I, Kaul G, Trivedi P, Chaturvedi V, Chopra S, Kanti Chakraborty T. Synthesis and Biological Studies of Dodecameric Cationic Antimicrobial Peptides Containing Tetrahydrofuran Amino Acids. Chembiochem 2020; 21:2518-2526. [PMID: 32297461 DOI: 10.1002/cbic.202000163] [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: 03/16/2020] [Revised: 04/13/2020] [Indexed: 11/05/2022]
Abstract
We report here a concise route to synthesize various stereoisomers of tetrahydrofuran amino acids (TAAs) and the synthesis of TAA-containing linear cationic dodecapeptides. Some of these linear peptides show slightly better antimicrobial activities than their tetra- and octameric congeners, but no activity against Mycobacterium tuberculosis, for which octapeptides exhibited by far the best results; this implies that antibacterial activity is dependent on the length of these linear peptides. All the dodecapeptides described here were found to be toxic in nature against Vero cells. The study helps to delineate the optimal length of this series of linear peptides and select potential leads in the development of novel cationic peptide-based antibiotics.
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Affiliation(s)
- Uttam Ghosh
- Department of Organic Chemistry, Indian Institution of Science, Bengaluru, 560012, Karnataka, India
| | - Isha Soni
- Division of Microbiology, CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India
| | - Grace Kaul
- Division of Microbiology, CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India
| | - Priyanka Trivedi
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India
| | - Vinita Chaturvedi
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India
| | - Sidharth Chopra
- Division of Microbiology, CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India
| | - Tushar Kanti Chakraborty
- Department of Organic Chemistry, Indian Institution of Science, Bengaluru, 560012, Karnataka, India
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Vangala M, Yousf S, Chugh J, Hotha S. Solid‐Phase Synthesis of Clickable Psicofuranose Glycocarbamates and Application of Their Self‐Assembled Nanovesicles for Curcumin Encapsulation. ChemistrySelect 2020. [DOI: 10.1002/slct.201904430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Madhuri Vangala
- Department of ChemistryIndian Institute of Science Education and Research Pune 411008 India
| | - Saleem Yousf
- Department of ChemistryIndian Institute of Science Education and Research Pune 411008 India
| | - Jeetender Chugh
- Department of ChemistryIndian Institute of Science Education and Research Pune 411008 India
| | - Srinivas Hotha
- Department of ChemistryIndian Institute of Science Education and Research Pune 411008 India
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5
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Myofibrillar Protein Structure and Gel Properties of Trichiurus Haumela Surimi Subjected to High Pressure or High Pressure Synergistic Heat. FOOD BIOPROCESS TECH 2020. [DOI: 10.1007/s11947-020-02416-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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6
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Kaldas SJ, Yudin AK. Achieving Skeletal Diversity in Peptide Macrocycles through The Use of Heterocyclic Grafts. Chemistry 2018; 24:7074-7082. [DOI: 10.1002/chem.201705418] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Sherif J. Kaldas
- Davenport Research Laboratories, Department of Chemistry; University of Toronto; 80 St. George St. Toronto ON M5S 3H6 Canada
| | - Andrei K. Yudin
- Davenport Research Laboratories, Department of Chemistry; University of Toronto; 80 St. George St. Toronto ON M5S 3H6 Canada
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7
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A compendium of cyclic sugar amino acids and their carbocyclic and heterocyclic nitrogen analogues. Amino Acids 2013; 45:613-89. [DOI: 10.1007/s00726-013-1521-1] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Accepted: 05/21/2013] [Indexed: 12/19/2022]
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Wang G, Yang H, Cheuk S, Coleman S. Synthesis and self-assembly of 1-deoxyglucose derivatives as low molecular weight organogelators. Beilstein J Org Chem 2011; 7:234-42. [PMID: 21445371 DOI: 10.3762/bjoc.7.31] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2010] [Accepted: 01/19/2011] [Indexed: 11/23/2022] Open
Abstract
Low molecular weight gelators are an important class of molecules. The supramolecular gels formed by carbohydrate derived low molecular weight gelators are interesting soft materials that show great potential for many applications. Previously, we have synthesized a series of methyl 4,6-O-benzylidene-α-D-glucopyranoside derivatives and found that several of them are good gelators for water, aqueous mixtures of DMSO, or aqueous mixtures of ethanol. The gelation efficiency of these glycolipid derivatives is dependent upon the structures of their acyl chains. In order to understand the influence of the anomeric position of the sugar headgroup towards self-assembly, we synthesized a series of 1-deoxyglucose analogs, and examined their gelation properties in several solvents. Several long chain esters, including diacetylene containing esters, and aryl esters exhibited gelation in ethanol, aqueous ethanol, or aqueous DMSO. The synthesis and characterization of these novel analogs are reported.
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Affiliation(s)
- Guijun Wang
- Department of Chemistry, University of New Orleans, New Orleans, LA 70148,
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Andreini M, Taillefumier C, Chrétien F, Thery V, Chapleur Y. Synthesis and Solution Conformation of Homo-β-peptides Consisting of N-Mannofuranosyl-3-ulosonic acids. J Org Chem 2009; 74:7651-9. [DOI: 10.1021/jo900966b] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Manuel Andreini
- Groupe SUCRES, Nancy Université UMR 7565 Université Henri Poincaré, Nancy 1-CNRS, BP 70239, F-54506, Nancy-Vandoeuvre, France
| | - Claude Taillefumier
- Clermont Université, Université Blaise Pascal, Laboratoire SEESIB (UMR 6504−CNRS), F-63177 Aubière cedex, France
| | - Françoise Chrétien
- Groupe SUCRES, Nancy Université UMR 7565 Université Henri Poincaré, Nancy 1-CNRS, BP 70239, F-54506, Nancy-Vandoeuvre, France
| | - Vincent Thery
- Clermont Université, Université Blaise Pascal, Laboratoire SEESIB (UMR 6504−CNRS), F-63177 Aubière cedex, France
| | - Yves Chapleur
- Groupe SUCRES, Nancy Université UMR 7565 Université Henri Poincaré, Nancy 1-CNRS, BP 70239, F-54506, Nancy-Vandoeuvre, France
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Wang G, Cheuk S, Yang H, Goyal N, Reddy PVN, Hopkinson B. Synthesis and characterization of monosaccharide-derived carbamates as low-molecular-weight gelators. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:8696-8705. [PMID: 19449815 DOI: 10.1021/la804337g] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Sugar-based low-molecular-weight gelators are an interesting new class of compounds that are important in supramolecular chemistry and for the preparation of advanced materials. Previously, we synthesized a series of ester and carbamate derivatives of 4,6-O-benzylidene methyl-alpha-D-glucopyranoside and found that monosubstituted alkynyl esters with five to seven carbons and monosubstituted carbamates with saturated five- and seven-carbon chains are good gelators. To understand the structural requirement for the gelation of the carbamate derivatives (O-linked carbamates), a diverse series of analogs, including alkynyl, aryl, and alkyl halide derivatives, were prepared and analyzed. We found that for gelation the O-linked carbamate derivatives have different structural preferences than the ester derivatives. To exhibit gellation, the ester analogs favor alkyl-containing terminal acetylene groups and the carbamoyl derivatives prefer saturated hydrocarbons. Both the esters and the carbamates showed good gelation properties when they were functionalized with aryl side chains. We also synthesized and screened a new series of carbamates (N-linked carbamates) in which the nitrogen atom of the carbamate group is directly attached to the sugar ring. The N-linked carbamates are good gelators for aqueous DMSO and ethanol solutions, and two of the compounds are also able to form gels in pure water. Optical microscopy and scanning electron microscopy were used to characterize several representative gels. In general, long, narrow, uniform fibrous networks were observed for effective gelators. The structure-gelation correlation obtained here can be used in the design of new sugar-based low-molecular-weight gelators.
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Affiliation(s)
- Guijun Wang
- Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148, USA.
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Cheuk S, Stevens ED, Wang G. Synthesis and structural analysis of a series of D-glucose derivatives as low molecular weight gelators. Carbohydr Res 2008; 344:417-25. [PMID: 19154993 DOI: 10.1016/j.carres.2008.12.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2008] [Revised: 11/27/2008] [Accepted: 12/02/2008] [Indexed: 11/15/2022]
Abstract
Low molecular weight gelators are an interesting new type of compounds that are important in supramolecular chemistry and advanced materials. Previously, we had synthesized several acyl derivatives of methyl 4,6-O-benzylidene-alpha-D-glucopyranoside and found that a number of terminal acetylene-containing esters are good gelators. To understand the structure requirement of the acyl chains, we synthesized a series of analogs containing different functional groups including aryl, alkenyl, and halogen derivatives. X-ray crystal structures of a monoester and a diester derivative were also obtained to help understand the relationship between structure and gelation. For good gelation properties, the carboxyl derivatives should possess alkyl groups containing a terminal acetylene group and aryl derivatives.
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Affiliation(s)
- Sherwin Cheuk
- Department of Chemistry, University of New Orleans, New Orleans, LA 70148, USA
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13
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Risseeuw MD, Overhand M, Fleet GW, Simone MI. A compendium of sugar amino acids (SAA): scaffolds, peptide- and glyco-mimetics. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.tetasy.2007.08.004] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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14
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Chakraborty TK, Roy S, Kumar SK, Kunwar AC. Synthesis and structural studies of peptides containing a glucose-derived furanoid sugar amino acid. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.03.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
Emulating the basic principles followed by nature to build its vast repertoire of biomolecules, organic chemists are developing many novel multifunctional building blocks and using them to create 'nature-like' and yet unnatural organic molecules. Sugar amino acids constitute an important class of such polyfunctional scaffolds where the carboxyl, amino and hydroxyl termini provide an excellent opportunity to organic chemists to create structural diversities akin to Nature's molecular arsenal. This article describes some of our works on various sugar amino acids and many other related building blocks, like furan amino acids, pyrrole amino acids etc. used in wide-ranging peptidomimetic studies.
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Chakraborty TK, Srinivasu P, Rao RV, Kumar SK, Kunwar AC. Conformational studies of peptides containing cis-3-hydroxy-D-proline. J Org Chem 2004; 69:7399-402. [PMID: 15471504 DOI: 10.1021/jo048893r] [Citation(s) in RCA: 13] [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
Conformational analysis of peptides containing cis-3-hydroxy-d-proline (d-cis-3-Hyp) by NMR studies revealed that the 3-hydroxyl group in this amino acid plays a significant role in the overall three-dimensional structures of the peptides. When the d-cis-3-Hyp had its 3-hydroxyl group protected as the benzyl (Bn) ether, the peptide displayed a beta-hairpin structure in both CDCl(3) and DMSO-d(6). Even after the removal of the Bn group, the resulting deprotected compound retained the same structure as in the protected version in CDCl(3). However, in polar solvent DMSO-d(6), the C-terminal strand of the hydroxyl-deprotected peptide flipped to the side of the hydroxyl group, breaking the hairpin to form a pseudo beta-turn-like nine-membered ring structure involving an intramolecular hydrogen bond between LeuNH --> HypC3-OH.
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Affiliation(s)
- T K Chakraborty
- Indian Institute of Chemical Technology, Hyderabad 500 007, India.
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17
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Johnson SW, Jenkinson (née Barker) SF, Angus D, Jones JH, Watkin DJ, Fleet GW. Pseudoenantiomeric oxetane δ-amino acid scaffolds derived from L-rhamnose and D-xylose: D/L-alanine-D-serine and glycine-L-serine dipeptide isosteres. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.tetasy.2004.08.023] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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Conformational studies of 3,4-dideoxy furanoid sugar amino acid containing analogs of the receptor binding inhibitor of vasoactive intestinal peptide. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.07.032] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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19
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Chakraborty TK, Srinivasu P, Tapadar S, Mohan BK. Sugar amino acids and related molecules: Some recent developments. J CHEM SCI 2004. [DOI: 10.1007/bf02708268] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Grotenbreg GM, Timmer MSM, Llamas-Saiz AL, Verdoes M, van der Marel GA, van Raaij MJ, Overkleeft HS, Overhand M. An unusual reverse turn structure adopted by a furanoid sugar amino acid incorporated in gramicidin S. J Am Chem Soc 2004; 126:3444-6. [PMID: 15025470 DOI: 10.1021/ja0397254] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new reverse turn, replacing one of the native type II' beta-turns in the cyclic peptide antibiotic gramicidin S, induced by a furanoid sugar amino acid is revealed. The C3-hydroxyl function plays a pivotal role by acting as a H-bond acceptor, consequently flipping the amide bond between residues i and i + 1, as was established by NMR and X-ray crystallographic analysis.
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Affiliation(s)
- Gijsbert M Grotenbreg
- Leiden Institute of Chemistry, Gorlaeus Laboratories, P.O. Box 9502, 2300 RA Leiden, The Netherlands
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Misra AK, Agnihotri G. Preparation of polyhydroxyalkyl- and C-glycosylfuran derivatives from free sugars catalyzed by cerium(III) chloride in aqueous solution: an improvement of the Garcia González reaction. Carbohydr Res 2004; 339:1381-7. [PMID: 15113679 DOI: 10.1016/j.carres.2004.02.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2003] [Accepted: 02/10/2004] [Indexed: 10/26/2022]
Abstract
Unprotected aldose sugars react smoothly with 1,3-diones or beta-ketoesters in the presence of CeCl(3).7H(2)O in aqueous solution to produce polyhydroxylalkyl- and C-glycosylfuran derivatives in excellent yield. Operationally simple, mild neutral reaction conditions in aqueous solution is the key feature of this methodology.
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Affiliation(s)
- Anup Kumar Misra
- Medicinal Chemistry Division, Central Drug Research Institute, Lucknow 226001, India.
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22
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Abstract
The synthesis of 10 N-(fluoren-9-ylmethoxycarbonyl)glycopyranosylamine uronic acids that are amenable to solid-phase synthesis is described. The general synthetic strategy involves initial incorporation of the protected amine, followed by selective TEMPO oxidation of C-6 hydroxyl groups to give the corresponding Fmoc-protected sugar amino acids. Amine incorporation may be accomplished from aminolysis of the free sugar or from glycosyl azide reduction. The reactions can be carried out on multigram scale, providing access to unique monomer units for future incorporation into combinatorial library syntheses.
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Affiliation(s)
- Laiqiang Ying
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA
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van Well RM, Marinelli L, Altona C, Erkelens K, Siegal G, van Raaij M, Llamas-Saiz AL, Kessler H, Novellino E, Lavecchia A, van Boom JH, Overhand M. Conformational analysis of furanoid epsilon-sugar amino acid containing cyclic peptides by NMR spectroscopy, molecular dynamics simulation, and X-ray crystallography: evidence for a novel turn structure. J Am Chem Soc 2003; 125:10822-9. [PMID: 12952461 DOI: 10.1021/ja035461+] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Sugar amino acids (SAAs) are useful building blocks for the design of peptidomimetics and peptide scaffolds. The three-dimensional structures of cyclic hybrid molecules containing the furanoid epsilon-SAA III and several amino acids were elucidated to study the preferred conformation of such an epsilon-SAA and its conformational influence on the backbone of cyclic peptides. NMR-based molecular dynamics simulations and empirical calculations of the cyclic tetramer 1, consisting of two copies of the SAA residue and two amino acids, revealed that it is conformationally restrained. The two SAA residues adopt different conformations. One of them forms an unusual turn, stabilized by an intraresidue nine-member hydrogen bond. The methylene functionalities of the other SAA residue are positioned in such a way that an intraresidue H bond is not possible. The X-ray crystal structure of 1 strongly resembles the solution conformation. Molecular dynamics calculations in combination with NMR analysis were also performed for compounds 2 and 3, which contain the RGD (Arg-Gly-Asp) consensus sequence and were previously shown to inhibit alpha(IIb)beta(3)-receptor-mediated platelet aggregation. The biologically most active compound 2 adopts a preferred conformation with the single SAA residue folded into the nine-member H bond-containing turn. Compound 3, containing an additional valine residue, as compared with compound 2, is conformational flexible. Our studies demonstrate that the furanoid epsilon-SAA III is able to introduce an unusual intraresidue hydrogen bond-stabilized beta-turn-like conformation in two of the three cyclic structures.
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Affiliation(s)
- Renate M van Well
- Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, PO Box 9502, 2300 RA Leiden, The Netherlands
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Moreno-Vargas AJ, Jiménez-Barbero J, Robina I. Hetaryleneaminopolyols and hetarylenecarbopeptoids: a new type of glyco- and peptidomimetics. Syntheses and studies on solution conformation and dynamics. J Org Chem 2003; 68:4138-50. [PMID: 12762712 DOI: 10.1021/jo026631o] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Ready access to a new class of oligomers has been demonstrated by the synthesis of hetaryleneaminopolyols and hetarylenecarbopeptoids using 3-hydroxymethyl-5-(4-amino-4-deoxy-d-arabinotetritol-1-yl)-2-methylfuran and 5-(4-amino-4-deoxy-d-arabinotetritol-1-yl)-2-methyl-3-furoic acid as novel scaffolds. The conformational behavior of peptidomimetics 22, 23, 25, 26, and 36 have been analyzed by NMR spectroscopy and extensive molecular dynamics simulations. MD simulations using the GB/SA continuum solvent model for water and the MM3 force field provide a population distribution of conformers which satisfactorily agrees with the experimental NMR data for the torsional degrees of freedom of the molecule.
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Affiliation(s)
- Antonio J Moreno-Vargas
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, Apartado 553, Spain
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25
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van Well RM, Meijer ME, Overkleeft HS, van Boom JH, van der Marel GA, Overhand M. Synthesis of bridged sugar amino acids: a new entry into conformationally locked δ- and ε-amino acids. Tetrahedron 2003. [DOI: 10.1016/s0040-4020(03)00288-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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26
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Chakraborty TK, Mohan B, Kumar S, Kunwar AC. Nucleation of β-hairpin structure in a pyrrole amino acid containing peptide. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(02)02593-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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27
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Development of 2,3-diazabicyclo[2.2.1]heptane as a constrained azapeptide template and its uses in peptidomimetic studies. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)01141-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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28
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Nguyen Van Nhien A, Ducatel H, Len C, Postel D. Novel conformationally restricted glycoamino acids from glyco-α-aminonitriles as potent turn mimics in peptide synthesis. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)00689-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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