1
|
Mulamreddy R, Hou X, Chemtob S, Lubell WD. Synthesis of 5- and 7-hydroxy indolizidin-2-one prostaglandin-F 2α modulators and activity on myometrial contractility towards development of agents for delaying preterm birth. J Pept Sci 2023; 29:e3455. [PMID: 36184819 DOI: 10.1002/psc.3455] [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: 06/01/2022] [Revised: 09/15/2022] [Accepted: 09/28/2022] [Indexed: 11/06/2022]
Abstract
In pursuit of more effective-labor delaying tocolytic agents, the prostaglandin F2α (PGF2α) receptor (FP) modulator PDC113.824 [(6S)-2] represents a potent lead for developing therapy to treat preterm birth. Derivatives of FP modulator (6S)-2 were synthesized, possessing respectively 5- and 7-hydroxyl groups on the indolizidin-2-one amino acid (I2 aa) residue. The effects of the alcohol substituents were examined in a PGF2α-induced myometrial contraction assay. Based on knowledge of dihedral angle values of model I2 aa peptides from X-ray analyses, the results of the study indicate respectively encouraging and limited potential for creating improved tocolytic agents by modifications at the 5- and 7-positions.
Collapse
Affiliation(s)
| | - Xin Hou
- Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, Québec, Canada
| | - Sylvain Chemtob
- Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, Québec, Canada
| | - William D Lubell
- Département de Chimie, Université de Montréal, Montréal, Québec, Canada
| |
Collapse
|
2
|
Zhang Y, Wang Y, Xie G, Chen J, Hu A, Wang R, He T, Duolikun D, Sun H. Synthesis of the Key Intermediate of SM-406 (Xevinapant) and Its Analogues. J Org Chem 2022; 87:13315-13321. [DOI: 10.1021/acs.joc.2c01173] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yanzhi Zhang
- Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, P. R. China
| | - Yibo Wang
- Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, P. R. China
| | - Guangjun Xie
- Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, P. R. China
| | - Junyang Chen
- Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, P. R. China
| | - Ankang Hu
- Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, P. R. China
| | - Runmei Wang
- Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, P. R. China
| | - Tianchen He
- Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, P. R. China
| | - Dilawo Duolikun
- Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, P. R. China
| | - Haiying Sun
- Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, P. R. China
| |
Collapse
|
3
|
Mulamreddy R, Lubell WD. Constrained Dipeptide Surrogates: 5- and 7-Hydroxy Indolizidin-2-one Amino Acid Synthesis from Iodolactonization of Dehydro-2,8-diamino Azelates. Molecules 2021; 27:molecules27010067. [PMID: 35011297 PMCID: PMC8746717 DOI: 10.3390/molecules27010067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 12/15/2021] [Accepted: 12/17/2021] [Indexed: 11/16/2022] Open
Abstract
The constrained dipeptide surrogates 5- and 7-hydroxy indolizidin-2-one N-(Boc)amino acids have been synthesized from L-serine as a chiral educt. A linear precursor ∆4-unsaturated (2S,8S)-2,8-bis[N-(Boc)amino]azelic acid was prepared in five steps from L-serine. Although epoxidation and dihydroxylation pathways gave mixtures of hydroxy indolizidin-2-one diastereomers, iodolactonization of the ∆4-azelate stereoselectively delivered a lactone iodide from which separable (5S)- and (7S)-hydroxy indolizidin-2-one N-(Boc)amino esters were synthesized by sequences featuring intramolecular iodide displacement and lactam formation. X-ray analysis of the (7S)-hydroxy indolizidin-2-one N-(Boc)amino ester indicated that the backbone dihedral angles embedded in the bicyclic ring system resembled those of the central residues of an ideal type II’ β-turn indicating the potential for peptide mimicry.
Collapse
|
4
|
Mulamreddy R, Hou X, Chemtob S, Lubell WD. 6-Hydroxymethyl Indolizidin-2-one Amino Acid Synthesis, Conformational Analysis, and Biomedical Application as Dipeptide Surrogates in Prostaglandin-F 2α Modulators. Org Lett 2021; 23:5192-5196. [PMID: 34161105 DOI: 10.1021/acs.orglett.1c01733] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
6-Hydroxymethyl indolizidin-2-one amino acids were synthesized in 10 steps from l-serine by intramolecular ring opening of a symmetrical epoxide and lactam formation. X-ray analyses indicated the bicycles replicated ideal peptide type II' β-turn central dihedral angle geometry. Inside a prostaglandin-F2α receptor modulator, the 6-hydroxymethyl analogue retained inhibitory activity on myometrial contractility.
Collapse
Affiliation(s)
- Ramakotaiah Mulamreddy
- Département de Chimie, Université de Montréal, C.P. 6128, Succursale Centre-Ville, Montréal, Québec H3C3J7, Canada
| | - Xin Hou
- Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal H3T 1C5, QC, Canada
| | - Sylvain Chemtob
- Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal H3T 1C5, QC, Canada
| | - William D Lubell
- Département de Chimie, Université de Montréal, C.P. 6128, Succursale Centre-Ville, Montréal, Québec H3C3J7, Canada
| |
Collapse
|
5
|
Xi W, Du L, Zhang L, Sun H. Synthesis of Conformationally Constrained Dipeptide Mimetics with Azabicyclo[4,3,0]nonanone and Azabicyclo[5,3,0]decanone Scaffolds. J Org Chem 2020; 85:10182-10188. [PMID: 32640157 DOI: 10.1021/acs.joc.0c00399] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A general and efficient method for the synthesis of azabicyclo[4,3,0]nonanone and azabicyclo[5,3,0]decanone amino acid derivatives was developed with the palladium-catalyzed coupling of intermediates 9 and 10 with BocNH2 and Boc2NH and the following reduction of the C-C double bond by hydrogenation as the key steps. The exploration of the synthesis of C6-substituted dipeptide mimetics from 9 and 10 using Suzuki coupling as the key reaction has also been performed.
Collapse
Affiliation(s)
- Wanlin Xi
- Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 21009, China
| | - Lei Du
- Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 21009, China
| | - Liping Zhang
- Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 21009, China
| | - Haiying Sun
- Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 21009, China
| |
Collapse
|
6
|
Fleming SR, Himes PM, Ghodge SV, Goto Y, Suga H, Bowers AA. Exploring the Post-translational Enzymology of PaaA by mRNA Display. J Am Chem Soc 2020; 142:5024-5028. [PMID: 32109054 DOI: 10.1021/jacs.0c01576] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PaaA is a RiPP enzyme that catalyzes the transformation of two glutamic acid residues within a substrate peptide into the bicyclic core of Pantocin A. Here, for the first time, we use mRNA display techniques to understand RiPP enzyme-substrate interactions to illuminate PaaA substrate recognition. Additionally, our data revealed insights into the enzymatic timing of glutamic acid modification. The technique developed is quite sensitive and a significant advancement over current RiPP studies and opens the door to enzyme modified mRNA display libraries for natural product-like inhibitor pans.
Collapse
Affiliation(s)
- Steven R Fleming
- Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Paul M Himes
- Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Swapnil V Ghodge
- Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States.,Early Discovery Biochemistry Department, Genentech Inc., South San Francisco, California 94114, United States
| | - Yuki Goto
- Department of Chemistry, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan.,JST, PRESTO, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hiroaki Suga
- Department of Chemistry, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan.,JST, CREST, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Albert A Bowers
- Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| |
Collapse
|
7
|
Serra M, Bernardi E, Lorenzi ED, Colombo L. Synthesis of Functionalized 6,5- and 7,5-Azabicycloalkane Amino Acids by Metathesis Reactions. J Org Chem 2019; 84:15726-15734. [PMID: 31693859 DOI: 10.1021/acs.joc.9b02268] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Azabicyclo[4.3.0]- and [5.3.0]alkanone amino acid derivatives were easily prepared by submitting the same starting dipeptide to a direct ring-closing enyne metathesis or an ethylene-mediated cross-enyne metathesis/ring-closing metathesis, respectively. The reactivity of the newly synthesized 6,5- and 7,5-fused bicyclic scaffolds was then investigated to obtain variously functionalized derivatives with potential applications in the field of peptides/peptidomimetics.
Collapse
Affiliation(s)
- Massimo Serra
- Department of Drug Sciences, Medicinal Chemistry and Pharmaceutical Technology Section , University of Pavia , Viale Taramelli 12 , 27100 Pavia , Italy
| | - Eric Bernardi
- Department of Drug Sciences, Medicinal Chemistry and Pharmaceutical Technology Section , University of Pavia , Viale Taramelli 12 , 27100 Pavia , Italy
| | - Ersilia De Lorenzi
- Department of Drug Sciences, Medicinal Chemistry and Pharmaceutical Technology Section , University of Pavia , Viale Taramelli 12 , 27100 Pavia , Italy
| | - Lino Colombo
- Department of Drug Sciences, Medicinal Chemistry and Pharmaceutical Technology Section , University of Pavia , Viale Taramelli 12 , 27100 Pavia , Italy
| |
Collapse
|
8
|
Okorochenkov S, Krchňák V. Application of Glaser-Hay Diyne Coupling To Constrain N α-Amino Acid Amides via a N-N Bridge. ACS COMBINATORIAL SCIENCE 2019; 21:316-322. [PMID: 30673274 DOI: 10.1021/acscombsci.8b00179] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
We present the application of a Glaser-Hay diyne coupling for the synthesis of conformationally constrained Nα-amino acid amides with different diyne ring sizes. Twelve-membered rings were the smallest rings that could be prepared by this approach. We observed the formation of triethylammonium adducts in the cases of smaller (10- and 11-membered) rings. Calculation of the conformational barriers for the cyclization reactions of various ring sizes demonstrated that the formation of amino acid-derived smaller rings by this reaction is thermodynamically unfavorable.
Collapse
Affiliation(s)
- Sergii Okorochenkov
- Department of Organic Chemistry, Faculty of Science, Palacky University, 17. Listopadu 12, 771 46 Olomouc, Czech Republic
| | - Viktor Krchňák
- Department of Organic Chemistry, Faculty of Science, Palacky University, 17. Listopadu 12, 771 46 Olomouc, Czech Republic
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Center, University of Notre Dame, Notre Dame, Indiana 46556, United States
| |
Collapse
|
9
|
Synthesis and biological evaluation of 7-(aminoalkyl)pyrazolo[1,5-a]pyrimidine derivatives as cathepsin K inhibitors. Bioorg Chem 2019; 84:226-238. [DOI: 10.1016/j.bioorg.2018.11.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 11/13/2018] [Accepted: 11/17/2018] [Indexed: 12/14/2022]
|
10
|
Henninot A, Collins JC, Nuss JM. The Current State of Peptide Drug Discovery: Back to the Future? J Med Chem 2017; 61:1382-1414. [PMID: 28737935 DOI: 10.1021/acs.jmedchem.7b00318] [Citation(s) in RCA: 638] [Impact Index Per Article: 91.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Over the past decade, peptide drug discovery has experienced a revival of interest and scientific momentum, as the pharmaceutical industry has come to appreciate the role that peptide therapeutics can play in addressing unmet medical needs and how this class of compounds can be an excellent complement or even preferable alternative to small molecule and biological therapeutics. In this Perspective, we give a concise description of the recent progress in peptide drug discovery in a holistic manner, highlighting enabling technological advances affecting nearly every aspect of this field: from lead discovery, to synthesis and optimization, to peptide drug delivery. An emphasis is placed on describing research efforts to overcome the inherent weaknesses of peptide drugs, in particular their poor pharmacokinetic properties, and how these efforts have been critical to the discovery, design, and subsequent development of novel therapeutics.
Collapse
Affiliation(s)
- Antoine Henninot
- Ferring Research Institute , 4245 Sorrento Valley Boulevard, San Diego, California 92121, United States
| | - James C Collins
- Ferring Research Institute , 4245 Sorrento Valley Boulevard, San Diego, California 92121, United States
| | - John M Nuss
- Ferring Research Institute , 4245 Sorrento Valley Boulevard, San Diego, California 92121, United States
| |
Collapse
|
11
|
Mirnik J, Pušavec Kirar E, Ričko S, Grošelj U, Golobič A, Požgan F, Štefane B, Svete J. Cu 0 -catalysed 1,3-dipolar cycloadditions of α-amino acid derived N,N -cyclic azomethine imines to ynones. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.04.050] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
12
|
St-Cyr DJ, García-Ramos Y, Doan ND, Lubell WD. Aminolactam, N-Aminoimidazolone, and N-Aminoimdazolidinone Peptide Mimics. TOPICS IN HETEROCYCLIC CHEMISTRY 2017. [DOI: 10.1007/7081_2017_204] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
13
|
Pušavec Kirar E, Grošelj U, Golobič A, Požgan F, Pusch S, Weber C, Andernach L, Štefane B, Opatz T, Svete J. Absolute Configuration Determination of 2,3-Dihydro-1H,5H-pyrazolo[1,2-a]pyrazoles Using Chiroptical Methods at Different Wavelengths. J Org Chem 2016; 81:11802-11812. [PMID: 27801585 DOI: 10.1021/acs.joc.6b02270] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A correlation between the absolute configuration and chiroptical properties of nonracemic 1,6,7-trisubstituted 2,3-dihydro-1H,5H-pyrazolo[1,2-a]pyrazoles was studied. A series of 16 novel representatives were prepared by Cu-catalyzed [3 + 2] cycloadditions of racemic (Z)-2-benzylidene-5-oxopyrazolidin-2-ium-1-ides to tert-butyl (S)-(3-oxopent-4-yn-2-yl)carbamate, and their structures were determined by NMR, VCD, ECD, and X-ray diffraction. A clear correlation between the sign of specific rotation and configuration at position C(1) allows for easy determination of the absolute configuration of 1,6,7-trisubstituted 2,3-dihydro-1H,5H-pyrazolo[1,2-a]pyrazoles by ECD and NMR. While VCD, requiring milligram quantities, allowed the determination of the correct relative and absolute configuration without additional information from other methods, the stereochemical analysis by ECD required knowledge of the relative configuration derived from NMR at a comparable computational level.
Collapse
Affiliation(s)
- Eva Pušavec Kirar
- Faculty of Chemistry and Chemical Technology, University of Ljubljana , Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Uroš Grošelj
- Faculty of Chemistry and Chemical Technology, University of Ljubljana , Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Amalija Golobič
- Faculty of Chemistry and Chemical Technology, University of Ljubljana , Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Franc Požgan
- Faculty of Chemistry and Chemical Technology, University of Ljubljana , Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Stefan Pusch
- Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Carina Weber
- Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Lars Andernach
- Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Bogdan Štefane
- Faculty of Chemistry and Chemical Technology, University of Ljubljana , Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Till Opatz
- Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Jurij Svete
- Faculty of Chemistry and Chemical Technology, University of Ljubljana , Večna pot 113, SI-1000 Ljubljana, Slovenia
| |
Collapse
|
14
|
Kang CW, Sarnowski MP, Ranatunga S, Wojtas L, Metcalf RS, Guida WC, Del Valle JR. β-Strand mimics based on tetrahydropyridazinedione (tpd) peptide stitching. Chem Commun (Camb) 2016; 51:16259-62. [PMID: 26400240 DOI: 10.1039/c5cc07189e] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Short peptides featuring a tetrahydropyridazinedione (tpd) backbone tether exhibit reduced conformational flexibility external to the heterocyclic constraint. Analysis by NMR, molecular modeling and X-ray crystallography suggests both covalent and non-covalent stabilization of extended peptide conformations. An efficient solid-phase protocol was developed for the synthesis of a new class of β-strand mimics based on oligomeric tpd subunits.
Collapse
Affiliation(s)
- Chang Won Kang
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA.
| | | | - Sujeewa Ranatunga
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA.
| | - Lukasz Wojtas
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA.
| | - Rainer S Metcalf
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA.
| | - Wayne C Guida
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA.
| | - Juan R Del Valle
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA.
| |
Collapse
|
15
|
Šenica L, Stopar K, Friedrich M, Grošelj U, Plavec J, Počkaj M, Podlipnik Č, Štefane B, Svete J. Synthesis and Rotational Isomerism of 1-Substituted Methyl (S)-[5-(2-Nitrophenyl)-1H-pyrazole-4-carbonyl]alaninates. J Org Chem 2015; 81:146-61. [DOI: 10.1021/acs.joc.5b02467] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Luka Šenica
- Faculty
of Chemistry and Chemical Technology, University of Ljubljana, Večna
pot 113, SI-1000 Ljubljana, Slovenia
| | - Karmen Stopar
- Faculty
of Chemistry and Chemical Technology, University of Ljubljana, Večna
pot 113, SI-1000 Ljubljana, Slovenia
| | - Miha Friedrich
- Centre of Excellence EN-FIST, Trg Osvobodilne fronte 13, SI-1000 Ljubljana, Slovenia
- National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| | - Uroš Grošelj
- Faculty
of Chemistry and Chemical Technology, University of Ljubljana, Večna
pot 113, SI-1000 Ljubljana, Slovenia
| | - Janez Plavec
- Faculty
of Chemistry and Chemical Technology, University of Ljubljana, Večna
pot 113, SI-1000 Ljubljana, Slovenia
- Centre of Excellence EN-FIST, Trg Osvobodilne fronte 13, SI-1000 Ljubljana, Slovenia
- National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| | - Marta Počkaj
- Faculty
of Chemistry and Chemical Technology, University of Ljubljana, Večna
pot 113, SI-1000 Ljubljana, Slovenia
| | - Črtomir Podlipnik
- Faculty
of Chemistry and Chemical Technology, University of Ljubljana, Večna
pot 113, SI-1000 Ljubljana, Slovenia
| | - Bogdan Štefane
- Faculty
of Chemistry and Chemical Technology, University of Ljubljana, Večna
pot 113, SI-1000 Ljubljana, Slovenia
- Centre of Excellence EN-FIST, Trg Osvobodilne fronte 13, SI-1000 Ljubljana, Slovenia
| | - Jurij Svete
- Faculty
of Chemistry and Chemical Technology, University of Ljubljana, Večna
pot 113, SI-1000 Ljubljana, Slovenia
- Centre of Excellence EN-FIST, Trg Osvobodilne fronte 13, SI-1000 Ljubljana, Slovenia
| |
Collapse
|
16
|
Jida M, Van der Poorten O, Guillemyn K, Urbanczyk-Lipkowska Z, Tourwé D, Ballet S. T3P-Promoted, Mild, One-Pot Syntheses of Constrained Polycyclic Lactam Dipeptide Analogues via Stereoselective Pictet–Spengler and Meyers Lactamization Reactions. Org Lett 2015; 17:4482-5. [DOI: 10.1021/acs.orglett.5b02145] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Mouhamad Jida
- Research
Group of Organic Chemistry, Departments of Chemistry and Bio-Engineering
Sciences, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
| | - Olivier Van der Poorten
- Research
Group of Organic Chemistry, Departments of Chemistry and Bio-Engineering
Sciences, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
| | - Karel Guillemyn
- Research
Group of Organic Chemistry, Departments of Chemistry and Bio-Engineering
Sciences, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
| | - Zofia Urbanczyk-Lipkowska
- Institute
of Organic Chemistry, Polish Academy of Sciences, Kasprzaka Strasse
44/52, 01-224 Warsaw, Poland
| | - Dirk Tourwé
- Research
Group of Organic Chemistry, Departments of Chemistry and Bio-Engineering
Sciences, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
| | - Steven Ballet
- Research
Group of Organic Chemistry, Departments of Chemistry and Bio-Engineering
Sciences, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
| |
Collapse
|
17
|
Pelay-Gimeno M, Glas A, Koch O, Grossmann TN. Structure-Based Design of Inhibitors of Protein-Protein Interactions: Mimicking Peptide Binding Epitopes. Angew Chem Int Ed Engl 2015; 54:8896-927. [PMID: 26119925 PMCID: PMC4557054 DOI: 10.1002/anie.201412070] [Citation(s) in RCA: 496] [Impact Index Per Article: 55.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Indexed: 12/15/2022]
Abstract
Protein-protein interactions (PPIs) are involved at all levels of cellular organization, thus making the development of PPI inhibitors extremely valuable. The identification of selective inhibitors is challenging because of the shallow and extended nature of PPI interfaces. Inhibitors can be obtained by mimicking peptide binding epitopes in their bioactive conformation. For this purpose, several strategies have been evolved to enable a projection of side chain functionalities in analogy to peptide secondary structures, thereby yielding molecules that are generally referred to as peptidomimetics. Herein, we introduce a new classification of peptidomimetics (classes A-D) that enables a clear assignment of available approaches. Based on this classification, the Review summarizes strategies that have been applied for the structure-based design of PPI inhibitors through stabilizing or mimicking turns, β-sheets, and helices.
Collapse
Affiliation(s)
- Marta Pelay-Gimeno
- Chemical Genomics Centre of the Max Planck SocietyOtto-Hahn-Strasse 15, 44227 Dortmund (Germany) E-mail:
| | - Adrian Glas
- Chemical Genomics Centre of the Max Planck SocietyOtto-Hahn-Strasse 15, 44227 Dortmund (Germany) E-mail:
| | - Oliver Koch
- TU Dortmund University, Department of Chemistry and Chemical BiologyOtto-Hahn-Strasse 6, 44227 Dortmund (Germany)
| | - Tom N Grossmann
- Chemical Genomics Centre of the Max Planck SocietyOtto-Hahn-Strasse 15, 44227 Dortmund (Germany) E-mail:
- TU Dortmund University, Department of Chemistry and Chemical BiologyOtto-Hahn-Strasse 6, 44227 Dortmund (Germany)
| |
Collapse
|
18
|
Pelay-Gimeno M, Glas A, Koch O, Grossmann TN. Strukturbasierte Entwicklung von Protein-Protein-Interaktionsinhibitoren: Stabilisierung und Nachahmung von Peptidliganden. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201412070] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
19
|
Khashper A, Lubell WD. Design, synthesis, conformational analysis and application of indolizidin-2-one dipeptide mimics. Org Biomol Chem 2015; 12:5052-70. [PMID: 24899358 DOI: 10.1039/c4ob00777h] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Growth in the field of peptide mimicry over the past few decades has resulted in the synthesis of many new compounds and the investigation of novel pharmacological agents. Azabicyclo[X.Y.0]alkanone amino acids are among the attractive classes of constrained mimics, because they can create rigid peptide structures for probing the conformation and roles of natural motifs in recognition events important for biological activity. Herein, we review the last ten years of the synthesis, conformational analysis and activity of analogs of the azabicyclo[4.3.0]alkan-2-one amino acid subclass, so-called indolizidin-2-one amino acids, with particular attention on their employment as inputs for biological applications.
Collapse
Affiliation(s)
- Arkady Khashper
- Département de Chimie, Université de Montréal, Montréal H3C 3J7, Canada.
| | | |
Collapse
|
20
|
Synthetic and structural routes for the rational conversion of peptides into small molecules. Methods Mol Biol 2015; 1268:159-93. [PMID: 25555725 DOI: 10.1007/978-1-4939-2285-7_8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The demand for modified peptides with improved stability profiles and pharmacokinetic properties is driving extensive research effort in this field. The conversion of peptides into organic molecules, as traditional drugs, is a long and puzzled way. Many and versatile approaches have been described for designing peptide mimetics: the substitution of natural residues with modified amino acids and the rigidification and modification of the backbone are the main structural and chemical routes walked in medicinal chemistry. All of these strategies have been successfully applied to obtain active new compounds in molecular biology, drug discovery and design. Here we propose a panoramic review of the most common methods for the preparation of modified peptides and the most interesting findings of the last decade.
Collapse
|
21
|
Bourguet CB, Claing A, Laporte SA, Hébert TE, Chemtob S, Lubell WD. Synthesis of azabicycloalkanone amino acid and azapeptide mimics and their application as modulators of the prostaglandin F2α receptor for delaying preterm birth. CAN J CHEM 2014. [DOI: 10.1139/cjc-2014-0289] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Premature birth (<37 weeks gestation) is the major cause of perinatal mortality and morbidity and has been steadily increasing worldwide. Towards the rational design of more effective therapeutic agents for inhibiting uterine contractions and prolonging gestation (a so-called tocolytic drug), our team has targeted the prostaglandin F2α receptor (FP) employing a peptidomimetic approach designed to provide modulators of this novel target. We identified first a lead peptide (PDC113) (1) based on the sequence of the second extracellular loop of FP on the basis that the loop itself might modulate receptor activation. Systematic study of the structure−activity relationships of 1 generated hypotheses concerning the conformation and side-chains responsible for activity that led to the synthesis of PDC113.31 (2), a potent all d-amino acid peptide, which has successfully completed Phase 1b clinical trials. Employing indolizidinone amino acids, peptide mimics were developed that served to probe the mechanism of FP modulation. For example, PDC113.824 (9) was shown to allosterically regulate FP activity contingent on the presence of prostaglandin F2α by a mechanism implicating biased signalling. Although attempts to understand the turn geometry responsible for the activity of 9 by replacement of its indolizidin-2-one moiety with other azabicycloalkanones failed to produce biologically active analogs, employment of aza-aminoacyl-proline analogs resulted in a series of FP modulators exhibiting distinct effects on different G protein-mediated signalling pathways. Our program has thus contributed novel probes for understanding the chemical biology of FP as well as new therapeutic agents with promise for inhibiting uterine contractions and preventing preterm birth.
Collapse
Affiliation(s)
- Carine B. Bourguet
- Département de Chimie, Université de Montréal, C.P.6128. Succursale Centre-Ville, Montréal, QC H3C 3J7, Canada
| | - Audrey Claing
- Département de Pharmacologie, Université de Montréal, C.P.6128. Succursale Centre-Ville, Montréal, QC H3C 3J7, Canada
| | - Stéphane A. Laporte
- Department of Medicine, McGill University Health Center Research Institute, Montréal, QC H3A 1A1, Canada
| | - Terence E. Hébert
- Department of Pharmacology and Therapeutics, McGill University, Montréal, QC H3G 1Y6, Canada
| | - Sylvain Chemtob
- Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, QC H3T 1C5, Canada
| | - William D. Lubell
- Département de Chimie, Université de Montréal, C.P.6128. Succursale Centre-Ville, Montréal, QC H3C 3J7, Canada
| |
Collapse
|
22
|
Kang CW, Ranatunga S, Sarnowski MP, Del Valle JR. Solid-phase synthesis of tetrahydropyridazinedione-constrained peptides. Org Lett 2014; 16:5434-7. [PMID: 25295511 PMCID: PMC4201324 DOI: 10.1021/ol5026684] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
![]()
The
design and solid-phase synthesis of tetrahydropyridazine-3,6-dione
(Tpd) peptidomimetics derived from backbone-aminated peptides is reported.
The described protocol features the synthesis of chiral α-hydrazino
acids suitable for chemoselective incorporation into growing peptide
chains. Acid-catalyzed cyclization to form the Tpd ring during cleavage
affords the target peptidomimetics in good yield and purity. The scope
of Tpd incorporation is demonstrated through the synthesis of constrained
peptides featuring nucleophilic/electrophilic side chains and sterically
encumbered α-substituted hydrazino acid residues.
Collapse
Affiliation(s)
- Chang Won Kang
- Drug Discovery Department, H. Lee Moffitt Cancer Center and Research Institute , Tampa, Florida 33612, United States
| | | | | | | |
Collapse
|
23
|
Nair RV, Baravkar SB, Ingole TS, Sanjayan GJ. Synthetic turn mimetics and hairpin nucleators: Quo Vadimus? Chem Commun (Camb) 2014; 50:13874-84. [PMID: 25051222 DOI: 10.1039/c4cc03114h] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Structural mimicry of peptides has witnessed perceptible progress in the last three decades. Reverse turn and β-hairpin units are the smallest secondary structural motifs that are some of the most scrutinized functional cores of peptides and proteins. The practice of mimicking, without altering the function of the bioactive core, ranges from conformational locking of the basic skeleton to total replacement of structural architecture using synthetic analogues. Development of heterogeneous backbones--using unnatural residues in place of natural ones--has broadened further opportunities for efficient structural rigidification. This feature article endeavours to trail the path of progress achieved hitherto and envisage the possibilities that lie ahead in the development of synthetic turn mimetics and hairpin nucleators.
Collapse
Affiliation(s)
- Roshna V Nair
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India.
| | | | | | | |
Collapse
|
24
|
Proulx C, Lubell WD. Analysis ofN-amino-imidazolin-2-one peptide turn mimic 4-position substituent effects on conformation by X-ray crystallography. Biopolymers 2014; 102:7-15. [DOI: 10.1002/bip.22327] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2013] [Revised: 06/06/2013] [Accepted: 06/07/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Caroline Proulx
- Département de Chimie; Université de Montréal; C.P. 6128, Succursale Center-Ville Montréal QC H3C 3J7 Canada
| | - William D. Lubell
- Département de Chimie; Université de Montréal; C.P. 6128, Succursale Center-Ville Montréal QC H3C 3J7 Canada
| |
Collapse
|
25
|
Novak A, Testen A, Bezenšek J, Grošelj U, Hrast M, Kasunič M, Gobec S, Stanovnik B, Svete J. Synthesis of pyrazolo[1,2-a]pyrazole-based peptide mimetics. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.05.122] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
26
|
Rhodium-catalyzed hydroformylation in fused azapolycycles synthesis. Top Curr Chem (Cham) 2013; 342:151-86. [PMID: 23609320 DOI: 10.1007/128_2013_432] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
N-Heterocycles, including fused ones, have proven to be an important class of compounds since they possess biological and pharmacological activities themselves and serve as valuable intermediates for synthetic drug discovery. My interest in the synthesis of these compounds stems from studies dealing with the hydroformylation (oxo) of olefins. The dihydroindolizines and benzofused ones are easily generated via rhodium-catalyzed hydroformylation of N-allylpyrroles and indoles: the butanal intermediate undergoes an intramolecular cyclodehydration giving the final polycyclic compound. This chapter reports my results in the area of the conversions of oxo aldehydes with additional C,C-bond-forming reactions together with relevant work from other laboratories on additional C,N-bond-forming reactions, encountered in the field of Azapolycycles synthesis over the last 5 years or so. The intramolecular sequences for polycylization will be especially emphasized using rhodium complexes to effect these transformations, under both conventional and microwave heating.
Collapse
|
27
|
Kang CW, Sun Y, Del Valle JR. Substituted imidazo[1,2-a]pyridines as β-strand peptidomimetics. Org Lett 2012; 14:6162-5. [PMID: 23210770 DOI: 10.1021/ol302850n] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
New conformationally extended dipeptide surrogates based on an imidazo[1,2-a]pyridine scaffold are described. Efficient synthesis and incorporation into host peptides affords structures with native side-chain functionality and hydrogen bonding elements on one face of the backbone. Structural analysis by NMR suggests that model peptidomimetics adopt a β-strand-like conformation in solution.
Collapse
Affiliation(s)
- Chang Won Kang
- Drug Discovery Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida 33612, United States
| | | | | |
Collapse
|
28
|
André C, Legrand B, Deng C, Didierjean C, Pickaert G, Martinez J, Averlant-Petit MC, Amblard M, Calmes M. (S)-ABOC: A Rigid Bicyclic β-Amino Acid as Turn Inducer. Org Lett 2012; 14:960-3. [DOI: 10.1021/ol203406v] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christophe André
- Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS-UM1-UM2, Faculté de pharmacie, 15 Avenue Charles Flahault, 34093 Montpellier, France, Laboratoire de Chimie-Physique Macromoléculaire, UMR 7568 CNRS-Université de Lorraine, 1 rue Grandville, 54001 Nancy Cedex 1, France, and Laboratoire de Cristallographie, Résonance Magnétique et Modélisation, UMR 7036 CNRS-Université de Lorraine, Boulevard des Aiguillettes, 54506 Vandoeuvre-Lès-Nancy Cedex, France
| | - Baptiste Legrand
- Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS-UM1-UM2, Faculté de pharmacie, 15 Avenue Charles Flahault, 34093 Montpellier, France, Laboratoire de Chimie-Physique Macromoléculaire, UMR 7568 CNRS-Université de Lorraine, 1 rue Grandville, 54001 Nancy Cedex 1, France, and Laboratoire de Cristallographie, Résonance Magnétique et Modélisation, UMR 7036 CNRS-Université de Lorraine, Boulevard des Aiguillettes, 54506 Vandoeuvre-Lès-Nancy Cedex, France
| | - Cheng Deng
- Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS-UM1-UM2, Faculté de pharmacie, 15 Avenue Charles Flahault, 34093 Montpellier, France, Laboratoire de Chimie-Physique Macromoléculaire, UMR 7568 CNRS-Université de Lorraine, 1 rue Grandville, 54001 Nancy Cedex 1, France, and Laboratoire de Cristallographie, Résonance Magnétique et Modélisation, UMR 7036 CNRS-Université de Lorraine, Boulevard des Aiguillettes, 54506 Vandoeuvre-Lès-Nancy Cedex, France
| | - Claude Didierjean
- Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS-UM1-UM2, Faculté de pharmacie, 15 Avenue Charles Flahault, 34093 Montpellier, France, Laboratoire de Chimie-Physique Macromoléculaire, UMR 7568 CNRS-Université de Lorraine, 1 rue Grandville, 54001 Nancy Cedex 1, France, and Laboratoire de Cristallographie, Résonance Magnétique et Modélisation, UMR 7036 CNRS-Université de Lorraine, Boulevard des Aiguillettes, 54506 Vandoeuvre-Lès-Nancy Cedex, France
| | - Guillaume Pickaert
- Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS-UM1-UM2, Faculté de pharmacie, 15 Avenue Charles Flahault, 34093 Montpellier, France, Laboratoire de Chimie-Physique Macromoléculaire, UMR 7568 CNRS-Université de Lorraine, 1 rue Grandville, 54001 Nancy Cedex 1, France, and Laboratoire de Cristallographie, Résonance Magnétique et Modélisation, UMR 7036 CNRS-Université de Lorraine, Boulevard des Aiguillettes, 54506 Vandoeuvre-Lès-Nancy Cedex, France
| | - Jean Martinez
- Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS-UM1-UM2, Faculté de pharmacie, 15 Avenue Charles Flahault, 34093 Montpellier, France, Laboratoire de Chimie-Physique Macromoléculaire, UMR 7568 CNRS-Université de Lorraine, 1 rue Grandville, 54001 Nancy Cedex 1, France, and Laboratoire de Cristallographie, Résonance Magnétique et Modélisation, UMR 7036 CNRS-Université de Lorraine, Boulevard des Aiguillettes, 54506 Vandoeuvre-Lès-Nancy Cedex, France
| | - Marie Christine Averlant-Petit
- Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS-UM1-UM2, Faculté de pharmacie, 15 Avenue Charles Flahault, 34093 Montpellier, France, Laboratoire de Chimie-Physique Macromoléculaire, UMR 7568 CNRS-Université de Lorraine, 1 rue Grandville, 54001 Nancy Cedex 1, France, and Laboratoire de Cristallographie, Résonance Magnétique et Modélisation, UMR 7036 CNRS-Université de Lorraine, Boulevard des Aiguillettes, 54506 Vandoeuvre-Lès-Nancy Cedex, France
| | - Muriel Amblard
- Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS-UM1-UM2, Faculté de pharmacie, 15 Avenue Charles Flahault, 34093 Montpellier, France, Laboratoire de Chimie-Physique Macromoléculaire, UMR 7568 CNRS-Université de Lorraine, 1 rue Grandville, 54001 Nancy Cedex 1, France, and Laboratoire de Cristallographie, Résonance Magnétique et Modélisation, UMR 7036 CNRS-Université de Lorraine, Boulevard des Aiguillettes, 54506 Vandoeuvre-Lès-Nancy Cedex, France
| | - Monique Calmes
- Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS-UM1-UM2, Faculté de pharmacie, 15 Avenue Charles Flahault, 34093 Montpellier, France, Laboratoire de Chimie-Physique Macromoléculaire, UMR 7568 CNRS-Université de Lorraine, 1 rue Grandville, 54001 Nancy Cedex 1, France, and Laboratoire de Cristallographie, Résonance Magnétique et Modélisation, UMR 7036 CNRS-Université de Lorraine, Boulevard des Aiguillettes, 54506 Vandoeuvre-Lès-Nancy Cedex, France
| |
Collapse
|
29
|
Panday SK. Advances in the chemistry of proline and its derivatives: an excellent amino acid with versatile applications in asymmetric synthesis. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.09.013] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
30
|
Ranatunga S, Kim JS, Pal U, Del Valle JR. An Ester Enolate–Claisen Rearrangement Route to Substituted 4-Alkylideneprolines. Studies toward a Definitive Structural Revision of Lucentamycin A. J Org Chem 2011; 76:8962-76. [DOI: 10.1021/jo201727g] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Sujeewa Ranatunga
- Drug Discovery Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida 33612, United
States
- Department of Chemistry
and Biochemistry, New Mexico State University, Las Cruces, New Mexico 88003, United States
| | - Jinsoo S. Kim
- Drug Discovery Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida 33612, United
States
| | - Ujjwal Pal
- Drug Discovery Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida 33612, United
States
| | - Juan R. Del Valle
- Drug Discovery Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida 33612, United
States
| |
Collapse
|
31
|
Godina TA, Lubell WD. Mimics of Peptide Turn Backbone and Side-Chain Geometry by a General Approach for Modifying Azabicyclo[5.3.0]alkanone Amino Acids. J Org Chem 2011; 76:5846-9. [DOI: 10.1021/jo2006363] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tanya A. Godina
- Département de Chimie, Université de Montréal, C. P. 6128, Succursale Centre Ville, Montréal, Québec, Canada H3C 3J7
| | - William D. Lubell
- Département de Chimie, Université de Montréal, C. P. 6128, Succursale Centre Ville, Montréal, Québec, Canada H3C 3J7
| |
Collapse
|
32
|
Xu HC, Moeller KD. Intramolecular anodic olefin coupling reactions: use of the reaction rate to control substrate/product selectivity. Angew Chem Int Ed Engl 2011; 49:8004-7. [PMID: 20839207 DOI: 10.1002/anie.201003924] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Hai-Chao Xu
- Department of Chemistry, Washington University in St. Louis, St. Louis, MO 63130, USA
| | | |
Collapse
|
33
|
Xu HC, Moeller KD. Intramolecular hydroamination of dithioketene acetals: an easy route to cyclic amino acid derivatives. Org Lett 2010; 12:5174-7. [PMID: 20945849 DOI: 10.1021/ol102193x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Catalytic intramolecular hydroamination of dithioketene acetals was developed for the synthesis of cyclic amino acid derivatives. Triggered by the addition of a catalytical amount of n-BuLi, the reaction proceeds to give proline and pipecolic acid derivatives in excellent yields and diastereoselectivity.
Collapse
Affiliation(s)
- Hai-Chao Xu
- Department of Chemistry, Washington University, St. Louis, Missouri 63130, United States
| | | |
Collapse
|
34
|
Structural characterization of a beta-turn mimic within a protein-protein interface. Proc Natl Acad Sci U S A 2010; 107:18336-41. [PMID: 20937907 DOI: 10.1073/pnas.1004187107] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
β-Turns are secondary structure elements not only exposed on protein surfaces, but also frequently found to be buried in protein-protein interfaces. Protein engineering so far considered mainly the backbone-constraining properties of synthetic β-turn mimics as parts of surface-exposed loops. A β-turn mimic, Hot═Tap, that is available in gram amounts, provides two hydroxyl groups that enhance its turn-inducing properties besides being able to form side-chain-like interactions. NMR studies on cyclic hexapeptides harboring the Hot═Tap dipeptide proved its strong β-turn-inducing capability. Crystallographic analyses of the trimeric fibritin-foldon/Hot═Tap hybrid reveal at atomic resolution how Hot═Tap replaces a βI'-turn by a βII'-type structure. Furthermore, Hot═Tap adapts to the complex protein environment by participating in several direct and water-bridged interactions across the foldon trimer interface. As building blocks, β-turn mimics capable of both backbone and side-chain mimicry may simplify the design of synthetic proteins.
Collapse
|
35
|
Xu HC, Moeller KD. Intramolecular Anodic Olefin Coupling Reactions: Use of the Reaction Rate To Control Substrate/Product Selectivity. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201003924] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
36
|
Ranatunga S, Liyanage W, Del Valle JR. Synthesis and conformational analysis of bicyclic extended dipeptide surrogates. J Org Chem 2010; 75:5113-25. [PMID: 20593836 PMCID: PMC2914495 DOI: 10.1021/jo1008433] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Regio- and diastereoselective reactions of a homoproline enolate enable the synthesis of novel extended dipeptide surrogates. Bicyclic carbamate 9 and fused beta-lactam scaffold 11 were prepared from L-pyroglutamic acid via substrate-controlled electrophilic azidation. Synthesis of orthogonally protected hexahydropyrrolizine, hexahydropyrrolizinone, and hexahydropyrroloazepinone dipeptide surrogates relied on allylation of proline derivative 5, followed by Curtius rearrangement to introduce the N-terminal carbamate group. A total of six azabicycloalkane derivatives were evaluated for conformational mimicry of extended dipeptides by a combination of X-ray diffraction and molecular modeling. Analysis of putative backbone dihedral angles and N- to C-terminal dipeptide distances indicate that compounds (alpha'S)-14b and 21 approximate the conformation of dipeptides found in beta-sheets, while tripeptide mimic 28 is also highly extended in the solid state. Structural data suggest that ring size and relative stereochemistry have a profound effect on the ability of these scaffolds to act as beta-strand mimetics and should inform the design of related conformational probes.
Collapse
|
37
|
Goupil E, Tassy D, Bourguet C, Quiniou C, Wisehart V, Pétrin D, Le Gouill C, Devost D, Zingg HH, Bouvier M, Saragovi HU, Chemtob S, Lubell WD, Claing A, Hébert TE, Laporte SA. A novel biased allosteric compound inhibitor of parturition selectively impedes the prostaglandin F2alpha-mediated Rho/ROCK signaling pathway. J Biol Chem 2010; 285:25624-36. [PMID: 20551320 DOI: 10.1074/jbc.m110.115196] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The prostaglandin F2alpha (PGF2alpha) receptor (FP) is a key regulator of parturition and a target for pharmacological management of preterm labor. However, an incomplete understanding of signaling pathways regulating myometrial contraction hinders the development of improved therapeutics. Here we used a peptidomimetic inhibitor of parturition in mice, PDC113.824, whose structure was based on the NH(2)-terminal region of the second extracellular loop of FP receptor, to gain mechanistic insight underlying FP receptor-mediated cell responses in the context of parturition. We show that PDC113.824 not only delayed normal parturition in mice but also that it inhibited both PGF2alpha- and lipopolysaccharide-induced preterm labor. PDC113.824 inhibited PGF2alpha-mediated, G(alpha)(12)-dependent activation of the Rho/ROCK signaling pathways, actin remodeling, and contraction of human myometrial cells likely by acting as a non-competitive, allosteric modulator of PGF2alpha binding. In contrast to its negative allosteric modulating effects on Rho/ROCK signaling, PDC113.824 acted as a positive allosteric modulator on PGF2alpha-mediated protein kinase C and ERK1/2 signaling. This bias in receptor-dependent signaling was explained by an increase in FP receptor coupling to G(alpha)(q), at the expense of coupling to G(alpha)(12). Our findings regarding the allosteric and biased nature of PDC113.824 offer new mechanistic insights into FP receptor signaling relevant to parturition and suggest novel therapeutic opportunities for the development of new tocolytic drugs.
Collapse
Affiliation(s)
- Eugénie Goupil
- Department of Medicine, McGill University Health Center Research Institute, Montréal H3A 1A1, Canada
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Xu HC, Moeller KD. Intramolecular anodic olefin coupling reactions and the synthesis of cyclic amines. J Am Chem Soc 2010; 132:2839-44. [PMID: 20131795 PMCID: PMC3950632 DOI: 10.1021/ja910586v] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Anodic olefin coupling reactions using a tosylamine trapping group have been studied. The cyclizations are favored by the use of a less-polar radical cation and more basic reaction conditions. The most significant factor for obtaining good yields of cyclic product is the use of the more basic reaction conditions. However, a number of factors including the nature of both the solvent and the electrolyte used can influence the yield of the cyclizations. The cyclizations allow for the rapid synthesis of both substituted proline and pipecolic acid type derivatives.
Collapse
Affiliation(s)
- Hai-Chao Xu
- Department of Chemistry, Washington University, St. Louis, Missouri 63130
| | - Kevin D. Moeller
- Department of Chemistry, Washington University, St. Louis, Missouri 63130
| |
Collapse
|
39
|
Paul A, Einsiedel J, Waibel R, Heinemann FW, Meyer K, Gmeiner P. Novel triazolopeptides: chirospecific synthesis and conformational studies of proline derived analogs. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.05.045] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
40
|
Jamieson AG, Boutard N, Beauregard K, Bodas MS, Ong H, Quiniou C, Chemtob S, Lubell WD. Positional scanning for peptide secondary structure by systematic solid-phase synthesis of amino lactam peptides. J Am Chem Soc 2009; 131:7917-27. [PMID: 19453183 DOI: 10.1021/ja9010628] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Incorporation of amino lactams into biologically active peptides has been commonly used to restrict conformational mobility, enhance selectivity, and increase potency. A solid-phase method using a Fmoc-protection strategy has been developed for the systematic synthesis of peptides containing configurationally defined alpha- and beta-amino gamma-lactams. N-Alkylation of N-silyl peptides with five- and six-member cyclic sulfamidates 9 and 8 minimized bis-alkylation and provided N-alkyl peptides, which underwent lactam annulation under microwave heating. Employing this solid-phase protocol on the growth hormone secretagogue GHRP-6, as well as on the allosteric modulator of the IL-1 receptor 101.10, has furnished 16 lactam derivatives and validated the effectiveness of this approach on peptides bearing aliphatic, aromatic, branched, charged, and heteroatomic side chains. The binding affinity IC(50) values of the GHRP-6 lactam analogues on both the GHS-R1a and CD36 receptors are reported as well as inhibition of thymocyte proliferation measurements for the 101.10 lactam analogues. In these cases, lactam analogues were prepared exhibiting similar or improved properties compared with the parent peptide. Considering the potential for amino lactams to induce peptide turn conformations, the effective method described herein for their supported construction on growing peptides, and for the systematical amino lactam scan of peptides, has proven useful for the rapid identification of the secondary structure necessary for peptide biological activity.
Collapse
Affiliation(s)
- Andrew G Jamieson
- Chemistry Department, Université de Montréal, C.P. 6128, Succursale Centre-Ville, Montreal, Quebec H3C 3J7, Canada
| | | | | | | | | | | | | | | |
Collapse
|
41
|
Zhang K, Teklebrhan RB, Schreckenbach G, Wetmore S, Schweizer F. Intramolecular hydrogen bond-controlled prolyl amide isomerization in glucosyl 3'(S)-hydroxy-5'-hydroxymethylproline hybrids: influence of a C-5'-hydroxymethyl substituent on the thermodynamics and kinetics of prolyl amide cis/trans isomerization. J Org Chem 2009; 74:3735-43. [PMID: 19354261 DOI: 10.1021/jo9003458] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Peptide mimics containing spirocyclic glucosyl-(3'-hydroxy-5'-hydroxymethyl)proline hybrids (Glc3'(S)-5'(CH(2)OH)HypHs) with a polar hydroxymethyl substituent at the C-5' position, such as C-terminal ester Ac-Glc3'(S)-5'(CH(2)OH)Hyp-OMe and C-terminal amide Ac-Glc3'(S)-5'(CH(2)OH)Hyp-N'-CH(3), were synthesized. C-Terminal esters exhibit increased cis population (23-53%) relative to Ac-3(S)HyPro-OMe (17%) or Ac-Pro-OMe (14%) in D(2)O. The prolyl amide cis population is further increased to 38-74% in the C-terminal amide form in D(2)O. Our study shows that the stereochemistry of the hydroxymethyl substituent at the C-5' position of proline permits tuning of the prolyl amide cis/trans isomer ratio. Inversion-magnetization transfer NMR experiments indicate that the stereochemistry of the hydroxymethyl substituent has a dramatic effect on the kinetics of prolyl amide cis/trans isomerization. A 200-fold difference in the trans-to-cis (k(tc)) isomerization and a 90-fold rate difference in the cis-to-trans (k(ct)) isomerization is observed between epimeric C-5' 3 and 4. When compared to reference peptide mimics Ac-Pro-OMe and Ac-3(S)Hyp-OMe, our study demonstrates that a (13-16)-fold decrease in k(tc) and k(ct) is observed for the C-5'(S), while a (5-24)-fold acceleration is observed for the C-5'(R) epimer. DFT calculations indicate that the pyrrolidine ring prefers a C(beta) exo pucker in both Ac-Glc3'(S)-5'(CH(2)OH)Hyp-OMe diastereoisomers. Computational calculations and chemical shift temperature coefficient (Delta delta/Delta T) experiments indicate that the hydroxymethyl group at C-5' in Ac-Glc3'(S)-5'(CH(2)OH)Hyp-OMe forms a stabilizing intramolecular hydrogen bond to the carbonyl of the N-acetyl group in both epimeric cis isomers. However, a competing intramolecular hydrogen bond between the hydroxymethyl groups in the pyrrolidine ring and pyran ring stabilizes the trans isomer in the C-5'(S) diastereoisomer. The dramatic differences in the kinetic properties of the diastereoisomeric peptide mimics are rationalized by the presence or absence of an intramolecular hydrogen bond between the hydroxymethyl substituent located at C-5' and the developing lone pair on the nitrogen atom of the N-acetyl group in the transition state.
Collapse
Affiliation(s)
- Kaidong Zhang
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | | | | | | | | |
Collapse
|
42
|
Jiang J, Qing J, Gong LZ. Asymmetric Synthesis of 3-Amino-δ-lactams and Benzo[a]quinolizidines by Catalytic Cyclization Reactions Involving Azlactones. Chemistry 2009; 15:7031-4. [DOI: 10.1002/chem.200900814] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
43
|
Fustero S, Mateu N, Albert L, Aceña JL. Straightforward Stereoselective Access to Cyclic Peptidomimetics. J Org Chem 2009; 74:4429-32. [DOI: 10.1021/jo900679c] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Santos Fustero
- Departamento de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, Spain, and Laboratorio de Moléculas Orgánicas, Centro de Investigación Príncipe Felipe, E-46012 Valencia, Spain
| | - Natalia Mateu
- Departamento de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, Spain, and Laboratorio de Moléculas Orgánicas, Centro de Investigación Príncipe Felipe, E-46012 Valencia, Spain
| | - Laia Albert
- Departamento de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, Spain, and Laboratorio de Moléculas Orgánicas, Centro de Investigación Príncipe Felipe, E-46012 Valencia, Spain
| | - José Luis Aceña
- Departamento de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, Spain, and Laboratorio de Moléculas Orgánicas, Centro de Investigación Príncipe Felipe, E-46012 Valencia, Spain
| |
Collapse
|
44
|
De Wachter R, Brans L, Ballet S, Van den Eynde I, Feytens D, Keresztes A, Toth G, Urbanczyk-Lipkowska Z, Tourwé D. Influence of ring substitution on the conformation and β-turn mimicry of 4-amino-1,2,4,5-tetrahydro-2-benzazepin-3-one peptide mimetics. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.01.057] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
45
|
Synthesis of pyrrolo[3,2-e][1,4]diazepin-2-ones as potential γ-turn mimetics. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2009; 611:183-4. [DOI: 10.1007/978-0-387-73657-0_84] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
46
|
Etayo P, Badorrey R, Díaz-de-Villegas MD, Gálvez JA. Asymmetric Homologation of Ketones. A New Entry to Orthogonally Protected (2R,4R)-Piperidine-2,4-dicarboxylic Acid. J Org Chem 2008; 73:8594-7. [DOI: 10.1021/jo801515k] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pablo Etayo
- Departamento de Química Orgánica, Instituto de Ciencia de Materiales de Aragón, Instituto Universitario de Catálisis Homogénea, Universidad de Zaragoza-CSIC, E-50009 Zaragoza, Spain
| | - Ramón Badorrey
- Departamento de Química Orgánica, Instituto de Ciencia de Materiales de Aragón, Instituto Universitario de Catálisis Homogénea, Universidad de Zaragoza-CSIC, E-50009 Zaragoza, Spain
| | - María D. Díaz-de-Villegas
- Departamento de Química Orgánica, Instituto de Ciencia de Materiales de Aragón, Instituto Universitario de Catálisis Homogénea, Universidad de Zaragoza-CSIC, E-50009 Zaragoza, Spain
| | - José A. Gálvez
- Departamento de Química Orgánica, Instituto de Ciencia de Materiales de Aragón, Instituto Universitario de Catálisis Homogénea, Universidad de Zaragoza-CSIC, E-50009 Zaragoza, Spain
| |
Collapse
|
47
|
Annunziata R, Benaglia M, Puglisi A, Raimondi L, Cozzi F. Synthesis of Some 2,2′:6′,2″-Terpyridines Disubstituted in Positions 6 and 6″ with Head-to-Tail Oriented Amino Acids and Dipeptides: A Simple Entry to a Reversible Inducer of Folding in Amino Acid Sequences. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800433] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
48
|
Vagner J, Qu H, Hruby VJ. Peptidomimetics, a synthetic tool of drug discovery. Curr Opin Chem Biol 2008; 12:292-6. [PMID: 18423417 PMCID: PMC2515564 DOI: 10.1016/j.cbpa.2008.03.009] [Citation(s) in RCA: 381] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2008] [Revised: 03/11/2008] [Accepted: 03/14/2008] [Indexed: 10/22/2022]
Abstract
The demand for modified peptides with improved stability profiles and pharmacokinetic properties is driving extensive research effort in this field. Many structural modifications of peptides guided by rational design and molecular modeling have been established to develop novel synthetic approaches. Recent advances in the synthesis of conformationally restricted building blocks and peptide bond isosteres are discussed.
Collapse
Affiliation(s)
- Josef Vagner
- Department of Biochemistry and Molecular Biophysics, Bio5 Institute, University of Arizona, Tucson, AZ, 85721, USA
| | - Hongchang Qu
- Department of Chemistry, University of Arizona, Tucson, AZ, 85721, USA
| | - Victor J. Hruby
- Department of Chemistry, University of Arizona, Tucson, AZ, 85721, USA
| |
Collapse
|
49
|
Kesselring D, Maurer K, Moeller KD. Building Addressable Libraries: Site-Selective Formation of an N-Acyliminium Ion Intermediate. Org Lett 2008; 10:2501-4. [DOI: 10.1021/ol8007827] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David Kesselring
- Department of Chemistry, Washington University, St. Louis, Missouri 63130, and CombiMatrix Corporation, 6500 Harbor Heights Parkway, Suite 301, Mukilteo, Washington 98275
| | - Karl Maurer
- Department of Chemistry, Washington University, St. Louis, Missouri 63130, and CombiMatrix Corporation, 6500 Harbor Heights Parkway, Suite 301, Mukilteo, Washington 98275
| | - Kevin D. Moeller
- Department of Chemistry, Washington University, St. Louis, Missouri 63130, and CombiMatrix Corporation, 6500 Harbor Heights Parkway, Suite 301, Mukilteo, Washington 98275
| |
Collapse
|
50
|
Che Y, Marshall GR. Privileged scaffolds targeting reverse-turn and helix recognition. Expert Opin Ther Targets 2008; 12:101-14. [PMID: 18076374 DOI: 10.1517/14728222.12.1.101] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND Protein-protein interactions dominate molecular recognition in biologic systems. One major challenge for drug discovery arises from the very large surfaces that are characteristic of many protein-protein interactions. OBJECTIVES To identify 'drug-like' small molecule leads capable of modulating protein-protein interactions based on common protein-recognition motifs, such as alpha-helices, beta-strands, reverse-turns and polyproline motifs for example. OVERVIEW Many proteins/peptides are unstructured under physiologic conditions and only fold into ordered structures on binding to their cellular targets. Therefore, preorganization of an inhibitor into its protein-bound conformation reduces the entropy of binding and enhances the relative affinity of the inhibitor. Accordingly, this review describes a general strategy to address the challenge based on the 'privileged structure hypothesis' [Che, PhD thesis, Washington University, 2003] that chemical templates capable of mimicking surfaces of protein-recognition motifs are potential privileged scaffolds as small-molecule inhibitors of protein-protein interactions. The authors highlight recent advances in the design of privileged scaffolds targeting reverse-turn and helical recognition. CONCLUSIONS Privileged scaffolds targeting common protein-recognition motifs are useful to help elucidate the receptor-bound conformation and to provide non-peptidic, bioavailable substructures suitable for optimization to modulate protein-protein interactions.
Collapse
Affiliation(s)
- Ye Che
- Washington University, Center for Computational Biology and Department of Biochemistry and Molecular Biophysics, St. Louis, MO 63110, USA
| | | |
Collapse
|