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Maffucci I, Clayden J, Contini A. Origin of Helical Screw Sense Selectivity Induced by Chiral Constrained Cα-Tetrasubstituted α-Amino Acids in Aib-based Peptides. J Phys Chem B 2015; 119:14003-13. [PMID: 26457452 DOI: 10.1021/acs.jpcb.5b07050] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The mechanisms behind the propensity of chiral constrained Cα-tetrasubstituted amino acids (cCTAAs) to induce one particular helical screw sense, when included in the Ac-Aib2-cCTAA-Aib2-NHMe peptide model, were studied through replica exchange molecular dynamics, potential of mean force, and quantum theory of atoms in molecules calculations. We observed that cCTAAs exert their effect on helical screw sense selectivity through the positioning of the side chain to generate steric hindrance in either the (-x, +y, +z) or (+x, +y, -z) sectors of a right-handed 3D Cartesian space, where the z axis corresponds to the axis of the helix and the Cα lies on the +y semiaxis (0, +y, 0). The different strengthening of the noncovalent interactions, also comprising C-H···O interactions, exerted by the cCTAA in the right-handed or left-handed helix was also found important to define the preference of a cCTAA for a particular helix screw sense.
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Affiliation(s)
- Irene Maffucci
- Dipartimento di Scienze Farmaceutiche - Sezione di Chimica Generale e Organica "Alessandro Marchesini", Università degli Studi di Milano , Via Venezian, 21, 20133 Milano, Italy
| | - Jonathan Clayden
- School of Chemistry, University of Manchester , Oxford Road, Manchester M13 9PL, U.K
| | - Alessandro Contini
- Dipartimento di Scienze Farmaceutiche - Sezione di Chimica Generale e Organica "Alessandro Marchesini", Università degli Studi di Milano , Via Venezian, 21, 20133 Milano, Italy
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Maffucci I, Pellegrino S, Clayden J, Contini A. Mechanism of stabilization of helix secondary structure by constrained Cα-tetrasubstituted α-amino acids. J Phys Chem B 2015; 119:1350-61. [PMID: 25528885 DOI: 10.1021/jp510775e] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The theoretical basis behind the ability of constrained Cα-tetrasubstituted amino acids (CTAAs) to induce stable helical conformations has been studied through Replica Exchange Molecular Dynamics Potential of Mean Force Quantum Theory of Atoms In Molecules calculations on Ac-l-Ala-CTAA-l-Ala-Aib-l-Ala-NHMe peptide models. We found that the origin of helix stabilization by CTAAs can be ascribed to at least two complementary mechanisms limiting the backbone conformational freedom: steric hindrance predominantly in the (+x,+y,-z) sector of a right-handed 3D Cartesian space, where the z axis coincides with the helical axis and the Cα of the CTAA lies on the +y axis (0,+y,0), and the establishment of additional and relatively strong C-H···O interactions involving the CTAA.
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Affiliation(s)
- Irene Maffucci
- Dipartimento di Scienze Farmaceutiche - Sezione di Chimica Generale e Organica "Alessandro Marchesini", Università degli Studi di Milano , Via Venezian, 21 20133 Milano, Italy
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Prajapti SK, Shrivastava S, Bihade U, Gupta AK, Naidu VGM, Banerjee UC, Babu BN. Synthesis and biological evaluation of novel Δ2-isoxazoline fused cyclopentane derivatives as potential antimicrobial and anticancer agents. MEDCHEMCOMM 2015. [DOI: 10.1039/c4md00525b] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel Δ2-isoxazoline fused cyclopentane derivatives have been synthesized and evaluated for their antimicrobial and anticancer activities.
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Affiliation(s)
- Santosh Kumar Prajapti
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- Hyderabad 500037
- India
| | - Shweta Shrivastava
- Department of Pharmacology and Toxicology
- National Institute of Pharmaceutical Education and Research (NIPER)
- Hyderabad 500037
- India
| | - Umesh Bihade
- Department of Pharmaceutical Technology
- National Institute of Pharmaceutical Education and Research (NIPER)
- S. A. S. Nagar
- India
| | - Ajay Kumar Gupta
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- Hyderabad 500037
- India
| | - V. G. M. Naidu
- Department of Pharmacology and Toxicology
- National Institute of Pharmaceutical Education and Research (NIPER)
- Hyderabad 500037
- India
| | - Uttam Chand Banerjee
- Department of Pharmaceutical Technology
- National Institute of Pharmaceutical Education and Research (NIPER)
- S. A. S. Nagar
- India
| | - Bathini Nagendra Babu
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- Hyderabad 500037
- India
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Ruffoni A, Contini A, Soave R, Lo Presti L, Esposto I, Maffucci I, Nava D, Pellegrino S, Gelmi ML, Clerici F. Model peptides containing the 3-sulfanyl-norbornene amino acid, a conformationally constrained cysteine analogue effective inducer of 310-helix secondary structures. RSC Adv 2015. [DOI: 10.1039/c5ra03805g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Two model peptides containing the 3-benzylsulfanylnorbornene amino acid (NRB) was prepared. Theoretical calculations, spectroscopic and X-ray analyses confirmed that both NRB enantiomers possess a strong right-handed helicogenic effect.
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Bonetti A, Clerici F, Foschi F, Nava D, Pellegrino S, Penso M, Soave R, Gelmi ML. syn/antiSwitching by Specific Heteroatom-Titanium Coordination in the Mannich-Like Synthesis of 2,3-Diaryl-β-amino Acid Derivatives. European J Org Chem 2014. [DOI: 10.1002/ejoc.201400142] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Ruffoni A, Ferri N, Bernini SK, Ricci C, Corsini A, Maffucci I, Clerici F, Contini A. 2-Amino-3-(phenylsulfanyl)norbornane-2-carboxylate: An Appealing Scaffold for the Design of Rac1–Tiam1 Protein–Protein Interaction Inhibitors. J Med Chem 2014; 57:2953-62. [DOI: 10.1021/jm401924s] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Alessandro Ruffoni
- Dipartimento
di Scienze Farmaceutiche—Sezione di Chimica Generale e Organica
“Alessandro Marchesini”, Università degli Studi di Milano, Via Venezian 21, 20133 Milano, Italy
| | - Nicola Ferri
- Dipartimento
di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Via Balzaretti 9, 20133 Milano, Italy
- Multimedica IRCCS, Milan, Italy
| | - Sergio K. Bernini
- Dipartimento
di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Via Balzaretti 9, 20133 Milano, Italy
| | - Chiara Ricci
- Dipartimento
di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Via Balzaretti 9, 20133 Milano, Italy
| | - Alberto Corsini
- Dipartimento
di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Via Balzaretti 9, 20133 Milano, Italy
| | - Irene Maffucci
- Dipartimento
di Scienze Farmaceutiche—Sezione di Chimica Generale e Organica
“Alessandro Marchesini”, Università degli Studi di Milano, Via Venezian 21, 20133 Milano, Italy
| | - Francesca Clerici
- Dipartimento
di Scienze Farmaceutiche—Sezione di Chimica Generale e Organica
“Alessandro Marchesini”, Università degli Studi di Milano, Via Venezian 21, 20133 Milano, Italy
| | - Alessandro Contini
- Dipartimento
di Scienze Farmaceutiche—Sezione di Chimica Generale e Organica
“Alessandro Marchesini”, Università degli Studi di Milano, Via Venezian 21, 20133 Milano, Italy
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Miklós F, Mándity IM, Sillanpää R, Fülöp F. Stereocontrolled synthesis of five diastereomers of trimethyl 3-aminocyclopentane-1,2,4-tricarboxylates. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.05.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Pellegrino S, Contini A, Clerici F, Gori A, Nava D, Gelmi ML. 1H-Azepine-4-amino-4-carboxylic acid: a new α,α-disubstituted ornithine analogue capable of inducing helix conformations in short Ala-Aib pentapeptides. Chemistry 2012; 18:8705-15. [PMID: 22689465 DOI: 10.1002/chem.201104023] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2011] [Revised: 03/30/2012] [Indexed: 11/08/2022]
Abstract
A very efficient synthesis of orthogonally protected 1H-azepine-4-amino-4-carboxylic acid, abbreviated as Azn, a conformationally restricted analogue of ornithine, was realized. It was obtained on a gram scale in good overall yield in five steps, three of which did not require isolation of the intermediates, starting from the readily available 1-amino-4-oxo-cyclohexane-4-carboxylic acid. Both enantiomers were used for the preparation of pentapeptide models containing Ala, Aib, and Azn. Conformational studies using both spectroscopic techniques (NMR, CD) and molecular dynamics on model 5-mer peptides showed that the (R)-Azn isomer possesses a marked helicogenic effect.
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Affiliation(s)
- Sara Pellegrino
- DISMAB, Sezione di Chimica Organica A. Marchesini, Facoltà di Farmacia, Università degli Studi Milano, Via Venezian 21, 20133 Milano, Italy.
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Ruffoni A, Casoni A, Pellegrino S, Gelmi ML, Soave R, Clerici F. Sulfanyl-methylene-5(4H)-oxazolones and β-sulfanyl-α-nitroacrylates as appealing dienophiles for the synthesis of conformationally constrained cysteine analogues. Tetrahedron 2012. [DOI: 10.1016/j.tet.2011.12.052] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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10
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Sakakura A, Ishihara K. Organoammonium Salt-Catalyzed Enantioselective Cycloaddition Reactions with α-(Acyloxy)- or α-Diacylaminoacroleins. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2010. [DOI: 10.1246/bcsj.20090345] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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11
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Mamedbeili (Mamedov) EG, Kyazimova TG, Nagiev ZM, Abdiev OB, Aliev KA. Synthesis of para-substituted bicyclo[2.2.1]hept-5-en-2-ylmethyl benzoates. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2009. [DOI: 10.1134/s1070428009010102] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Cativiela C, Ordóñez M. Recent Progress on the Stereoselective Synthesis of Cyclic Quaternary alpha-Amino Acids. TETRAHEDRON, ASYMMETRY 2009; 20:1-63. [PMID: 20300486 PMCID: PMC2839256 DOI: 10.1016/j.tetasy.2009.01.002] [Citation(s) in RCA: 180] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The most recent papers describing the stereoselective synthesis of cyclic quaternary alpha-amino acids are collected in this review. The diverse synthetic approaches are classified according to the size of the ring and taking into account the bond that is formed to complete the quaternary skeleton.
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Affiliation(s)
- Carlos Cativiela
- Departamento de Química Orgánica, ICMA, Universidad de Zaragoza-CSIC, 50009 Zaragoza (Spain)
| | - Mario Ordóñez
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, 62209 Cuernavaca, Morelos (México)
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Ishihara K, Nakano K, Akakura M. Organocatalytic Enantioselective Diels−Alder Reaction of Dienes with α-(N,N-Diacylamino)acroleins. Org Lett 2008; 10:2893-6. [DOI: 10.1021/ol8011277] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kazuaki Ishihara
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, Japan, and Department of Chemistry, Aichi University of Education, Igaya-cho, Kariya, Aichi 448-0001, Japan
| | - Kazuhiko Nakano
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, Japan, and Department of Chemistry, Aichi University of Education, Igaya-cho, Kariya, Aichi 448-0001, Japan
| | - Matsujiro Akakura
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, Japan, and Department of Chemistry, Aichi University of Education, Igaya-cho, Kariya, Aichi 448-0001, Japan
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Gelmi ML, Clerici F, Gandolfi R, Pellegrino S. A new efficient synthesis of enantiopure diastereomeric 3′-aminocyclopentylglycines. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.tetasy.2008.01.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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15
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Caputo F, Cattaneo C, Clerici F, Gelmi ML, Pellegrino S. Alpha,gamma-diamino acids: asymmetric synthesis of new constrained 6-amino-3-azabicyclo[3.2.1]octane-6-carboxylic acids. J Org Chem 2007; 71:8467-72. [PMID: 17064021 DOI: 10.1021/jo061391o] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The synthesis of two new diastereomeric 6-amino-3-azabicyclo[3.2.1]octane-6-carboxylic acids exo- and endo-8,9 is reported using exo- and endo-norbornene amino acids as chiral building blocks. This method provides a fast access to optically pure amino acids 8 and 9 which can be considered both alpha,gamma- and alpha,delta-diamino acids containing sterical constraints and characterized by alpha,alpha-disubstitution.
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Affiliation(s)
- Francesco Caputo
- Istituto di Chimica Organica "A. Marchesini", Facoltà di Farmacia, Università di Milano, Via Venezian 21, I-20133 Milano, Italy
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