101
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Mazzier D, Crisma M, De Poli M, Marafon G, Peggion C, Clayden J, Moretto A. Helical Foldamers Incorporating Photoswitchable Residues for Light-Mediated Modulation of Conformational Preference. J Am Chem Soc 2016; 138:8007-18. [DOI: 10.1021/jacs.6b04435] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniela Mazzier
- Department
of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Marco Crisma
- Institute of Biomolecular Chemistry, Padova Unit, CNR, Via Marzolo 1, 35131 Padova, Italy
| | - Matteo De Poli
- School
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Giulia Marafon
- Department
of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Cristina Peggion
- Department
of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Jonathan Clayden
- School
of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
| | - Alessandro Moretto
- Department
of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
- Institute of Biomolecular Chemistry, Padova Unit, CNR, Via Marzolo 1, 35131 Padova, Italy
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102
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Demizu Y, Okitsu K, Yamashita H, Doi M, Misawa T, Oba M, Tanaka M, Kurihara M. α-Helical Structures of Oligopeptides with an Alternating l-Leu-Aib Segment. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600327] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Yosuke Demizu
- National Institute of Health Sciences; Setagaya 158-8501 Tokyo Japan
| | - Koyo Okitsu
- National Institute of Health Sciences; Setagaya 158-8501 Tokyo Japan
| | - Hiroko Yamashita
- National Institute of Health Sciences; Setagaya 158-8501 Tokyo Japan
| | - Mitsunobu Doi
- Osaka University of Pharmaceutical Sciences; 569-1094 Osaka Japan
| | - Takashi Misawa
- National Institute of Health Sciences; Setagaya 158-8501 Tokyo Japan
| | - Makoto Oba
- Graduate School of Biomedical Sciences; Nagasaki University; 852-8521 Nagasaki Japan
| | - Masakazu Tanaka
- Graduate School of Biomedical Sciences; Nagasaki University; 852-8521 Nagasaki Japan
| | - Masaaki Kurihara
- National Institute of Health Sciences; Setagaya 158-8501 Tokyo Japan
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103
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Zhang P, Zhang L, Wang ZK, Zhang YC, Guo R, Wang H, Zhang DW, Li ZT. Guest-Induced Arylamide Polymer Helicity: Twist-Sense Bias and Solvent-Dependent Helicity Inversion. Chem Asian J 2016; 11:1725-30. [DOI: 10.1002/asia.201600289] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Indexed: 01/07/2023]
Affiliation(s)
- Peng Zhang
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM); Fudan University; 220 Handan Road Shanghai 200433 China
| | - Liang Zhang
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM); Fudan University; 220 Handan Road Shanghai 200433 China
| | - Ze-Kun Wang
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM); Fudan University; 220 Handan Road Shanghai 200433 China
| | - Yun-Chang Zhang
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM); Fudan University; 220 Handan Road Shanghai 200433 China
| | - Rong Guo
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM); Fudan University; 220 Handan Road Shanghai 200433 China
| | - Hui Wang
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM); Fudan University; 220 Handan Road Shanghai 200433 China
| | - Dan-Wei Zhang
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM); Fudan University; 220 Handan Road Shanghai 200433 China
| | - Zhan-Ting Li
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM); Fudan University; 220 Handan Road Shanghai 200433 China
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104
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Zhang P, Wang Z, Zhang L, Wang H, Zhang D, Hou J, Li Z. Aromatic Amide Polymers that Form Two Helical Conformations with Twist Sense Bias in Water. CHINESE J CHEM 2016. [DOI: 10.1002/cjoc.201600140] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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105
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Zhao W, Huang F, Wang Y, Li Q, Shang J, Che Y, Jiang H. Aryl-triazole foldamers with ethynyl spacers as effective receptors for halides and oxyanions. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.03.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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106
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1,4-Bis[(N-acetyl-l-phenylalanyl-glycyl-l-alanyl)aminomethyl]benzene. MOLBANK 2016. [DOI: 10.3390/m893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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107
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Abstract
Foldamers can be made more than pieces of static, conformationally uniform molecular architecture by designing into their structure the conformational dynamism characteristic of functional molecular machines. We show that these dynamic foldamers display biomimetic properties reminiscent of allosteric proteins and receptor molecules. They can translate chemical signals into conformational changes, and hence into chemical outputs such as control of reactivity and selectivity. Future developments could see dynamic foldamers operating in the membrane phase providing artificial mechanisms for communication and control that integrate synthetic chemistry into synthetic biology.
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Affiliation(s)
- Bryden A F Le Bailly
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK.
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108
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Noguchi H, Takafuji M, Maurizot V, Huc I, Ihara H. Chiral separation by a terminal chirality triggered P- helical quinoline oligoamide foldamer. J Chromatogr A 2016; 1437:88-94. [DOI: 10.1016/j.chroma.2016.01.059] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 01/26/2016] [Accepted: 01/26/2016] [Indexed: 11/25/2022]
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109
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Sharma GVM, Anjaiah G, Kanakaraju M, Sudhakar B, Chatterjee D, Kunwar AC. Synthesis of a new β-amino acid with a 3-deoxy-L-ara furnaoside side chain: the influence of the side chain on the conformation of α/β-peptides. Org Biomol Chem 2016; 14:503-515. [PMID: 26489370 DOI: 10.1039/c5ob01753j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The important role of side chains in the stabilization of helical folds in peptidic foldamers containing C-linked carbo-β-amino acids (β-Caa), an interesting class of β-amino acids, with carbohydrate side chains has been extensively elaborated. As a pragmatic approach to alleviate the interference of substituents in the side chains on the folding propensities of the peptides, they are often modified or removed. The present study reports the synthesis of a new β-Caa with a 3-deoxy-L-ara furanoside side chain, [(R)-β-Caa(da)], from D-glucose, and its use in the synthesis of α/β-peptides in 1 : 1 alternation with D-Ala. The synthesis of peptides using (R)-β-Caa(da), was facile unlike those from (R)-β-Caa(a) having the L-ara furanoside side chain. The detailed NMR, molecular dynamics (MD) and CD studies on the new α/β-peptides showed the presence of robust left-handed 11/9-mixed helices. The study demonstrates that the new (R)-β-Caa(da), behaves differently compared to the other two related monomers, (R)-β-Caa(x) with the D-xylo furanoside side chain and (R)-β-Caa(a).
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Affiliation(s)
- Gangavaram V M Sharma
- Organic and Biomolecular Chemistry Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India.
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110
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Demizu Y, Yamashita H, Misawa T, Doi M, Oba M, Tanaka M, Kurihara M. Handedness Preferences of Heterochiral Helical Peptides Containing Homochiral Peptide Segments. European J Org Chem 2016. [DOI: 10.1002/ejoc.201501146] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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111
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Jedhe GS, Vijayadas KN, Kotmale AS, Sangtani E, Shinde DR, Gonnade RG, Rajamohanan PR, Sanjayan GJ. Residue dependent hydrogen-bonding preferences in orthanilic acid-based short peptide β-turn motifs. RSC Adv 2016. [DOI: 10.1039/c6ra05684a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
This communication describes the competition between native β-turn (C10) and 2-aminobenzenesulfonic acid (SAnt)(orthanilic acid)-based pseudo β-turn (C11) in their hybrid peptides.
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Affiliation(s)
- Ganesh S. Jedhe
- Division of Organic Chemistry
- CSIR-National Chemical Laboratory
- Pune 411 008
- India
| | | | - Amol S. Kotmale
- Central NMR Facility
- CSIR-National Chemical Laboratory
- Pune 411 008
- India
| | - Ekta Sangtani
- Center for Materials Characterization
- CSIR-National Chemical Laboratory
- Pune 411 008
- India
| | - Dinesh R. Shinde
- Central NMR Facility
- CSIR-National Chemical Laboratory
- Pune 411 008
- India
| | - Rajesh G. Gonnade
- Center for Materials Characterization
- CSIR-National Chemical Laboratory
- Pune 411 008
- India
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112
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Mondal T, Ghosh S. A remarkable impact of a minor structural variation in the chain-end on the hierarchical self-assembly of a polymeric foldamer. Polym Chem 2016. [DOI: 10.1039/c6py01486k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This article elucidates a remarkable end group effect on the macroscopic assembly pathway of chain folded polyurethanes (PU) PU-2 and PU-3, both of which contain a linear PU chain appended with n-type semiconducting naphthalene-diimide (NDI) chromophores.
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Affiliation(s)
- Tathagata Mondal
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Kolkata-700032
- India
| | - Suhrit Ghosh
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Kolkata-700032
- India
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113
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Ikai T, Shimizu S, Awata S, Kudo T, Yamada T, Maeda K, Kanoh S. Synthesis and chiroptical properties of a π-conjugated polymer containing glucose-linked biphenyl units in the main chain capable of folding into a helical conformation. Polym Chem 2016. [DOI: 10.1039/c6py01759b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Naturally occurring ellagitannins provide us with inspiration for the development of a chiral π-conjugated polymer bearing glucose-linked biphenyl units in the main chain.
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Affiliation(s)
- Tomoyuki Ikai
- Graduate School of Natural Science and Technology
- Kanazawa University
- Kanazawa 920-1192
- Japan
| | - Syo Shimizu
- Graduate School of Natural Science and Technology
- Kanazawa University
- Kanazawa 920-1192
- Japan
| | - Seiya Awata
- Graduate School of Natural Science and Technology
- Kanazawa University
- Kanazawa 920-1192
- Japan
| | - Tomoya Kudo
- Graduate School of Natural Science and Technology
- Kanazawa University
- Kanazawa 920-1192
- Japan
| | - Takayuki Yamada
- Graduate School of Natural Science and Technology
- Kanazawa University
- Kanazawa 920-1192
- Japan
| | - Katsuhiro Maeda
- Graduate School of Natural Science and Technology
- Kanazawa University
- Kanazawa 920-1192
- Japan
| | - Shigeyoshi Kanoh
- Graduate School of Natural Science and Technology
- Kanazawa University
- Kanazawa 920-1192
- Japan
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114
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Chandramouli N, El-Behairy MF, Lautrette G, Ferrand Y, Huc I. Polar solvent effects on tartaric acid binding by aromatic oligoamide foldamer capsules. Org Biomol Chem 2016; 14:2466-72. [DOI: 10.1039/c5ob02641e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aromatic amide foldamer capsules hold polar guests in protic solvents.
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Affiliation(s)
- Nagula Chandramouli
- Univ. Bordeaux
- CBMN (UMR 5248)
- Institut Européen de Chimie Biologie
- 33607 Pessac
- France
| | | | - Guillaume Lautrette
- Univ. Bordeaux
- CBMN (UMR 5248)
- Institut Européen de Chimie Biologie
- 33607 Pessac
- France
| | - Yann Ferrand
- Univ. Bordeaux
- CBMN (UMR 5248)
- Institut Européen de Chimie Biologie
- 33607 Pessac
- France
| | - Ivan Huc
- Univ. Bordeaux
- CBMN (UMR 5248)
- Institut Européen de Chimie Biologie
- 33607 Pessac
- France
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115
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Abramyan AM, Liu Z, Pophristic V. Helix handedness inversion in arylamide foldamers: elucidation and free energy profile of a hopping mechanism. Chem Commun (Camb) 2016; 52:669-72. [DOI: 10.1039/c5cc07060k] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The free energy landscape and conformations of minima and intermediates along the stepwise handedness inversion pathway, proceeding through the simultaneous unfolding/folding of adjacent monomer–monomer linkages, for a helical arylamide foldamer.
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Affiliation(s)
- Ara M. Abramyan
- Department of Chemistry & Biochemistry
- University of the Sciences
- Philadelphia
- USA
| | - Zhiwei Liu
- Department of Chemistry & Biochemistry
- University of the Sciences
- Philadelphia
- USA
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116
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Kim JS, Jeon HG, Jeong KS. Modulation of helix stability of indolocarbazole–pyridine hybrid foldamers. Chem Commun (Camb) 2016; 52:3406-9. [DOI: 10.1039/c6cc00045b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The kinetic stabilities of the helical conformations of indolocarbazole–pyridine hybrid foldamers were modulated through single site modification.
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117
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Jeon HG, Jung JY, Kang P, Choi MG, Jeong KS. Folding-Generated Molecular Tubes Containing One-Dimensional Water Chains. J Am Chem Soc 2015; 138:92-5. [DOI: 10.1021/jacs.5b11808] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Hae-Geun Jeon
- Department of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Jin Young Jung
- Department of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Philjae Kang
- Department of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Moon-Gun Choi
- Department of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Kyu-Sung Jeong
- Department of Chemistry, Yonsei University, Seoul 120-749, Korea
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118
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Sharma GVM, Ravindranath H, Bhaskar A, Sirisha K, Ramakrishna KVS, Sarma AVS. Design and Synthesis of Diastereomeric β3-Peptides from (R,R)/(S,S)-APyC and (R)/(S)-β3-Caa: Determination of Enantiomeric Handedness. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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119
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Liu Y, Shen J, Sun C, Ren C, Zeng H. Intramolecularly Hydrogen-Bonded Aromatic Pentamers as Modularly Tunable Macrocyclic Receptors for Selective Recognition of Metal Ions. J Am Chem Soc 2015; 137:12055-63. [DOI: 10.1021/jacs.5b07123] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Ying Liu
- Prinbury Biopharm. Co., Ltd, 538
Cailun Road, Zhangjiang Hi-Tech Park, Pudong District, Shanghai, 201203, China
| | - Jie Shen
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669
| | - Chang Sun
- College
of Textiles and Clothing, Jiangnan University, 1800 Lihu Avenue, Wuxi, Jiangsu214122, China
| | - Changliang Ren
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669
| | - Huaqiang Zeng
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669
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120
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Liu X, Weinert ZJ, Sharafi M, Liao C, Li J, Schneebeli ST. Regulating Molecular Recognition with C-Shaped Strips Attained by Chirality-Assisted Synthesis. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506793] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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121
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Liu X, Weinert ZJ, Sharafi M, Liao C, Li J, Schneebeli ST. Regulating Molecular Recognition with C-Shaped Strips Attained by Chirality-Assisted Synthesis. Angew Chem Int Ed Engl 2015; 54:12772-6. [DOI: 10.1002/anie.201506793] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Indexed: 12/15/2022]
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122
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Zitzler-Kunkel A, Kirchner E, Bialas D, Simon C, Würthner F. Spacer-Modulated Differentiation Between Self-Assembly and Folding Pathways for Bichromophoric Merocyanine Dyes. Chemistry 2015; 21:14851-61. [DOI: 10.1002/chem.201502434] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Indexed: 12/29/2022]
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123
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Katagiri K, Komagawa S, Uchiyama M, Yamaguchi K, Azumaya I. Control of a Chiral Property of a Calix[3]aramide: The Racemization Suppressed by Intramolecular Cyclic Hydrogen Bonds and DMSO-H2O System-Induced Spontaneous Resolution. Org Lett 2015; 17:3650-3. [PMID: 26186403 DOI: 10.1021/acs.orglett.5b01455] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A calix[3]aramide has been synthesized bearing three triphenylphosphinic amide moieties, which formed intramolecular cyclic hydrogen bonds that suppressed its cone/partial cone inversion. The intramolecular cyclic hydrogen bonds were disrupted by DMSO, and the insertion of H2O into the hydrogen bonds triggered the spontaneous resolution of the calix[3]aramide. Within a chiral environment, such as that afforded by the presence of optically active 2-butanol, the calix[3]aramide underwent a symmetry breaking crystallization process.
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Affiliation(s)
- Kosuke Katagiri
- †Department of Chemistry, Konan University, 8-9-1 Okamoto, Higashinada-ku, Kobe 658-8501, Japan
| | - Shinsuke Komagawa
- ‡Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, 1314-1 Shido, Sanuki, Kagawa 769-2193, Japan
| | - Masanobu Uchiyama
- §Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.,∥Advanced Elements Chemistry Research Team, RIKEN Center for Sustainable Resource Science, and Elements Chemistry Laboratory, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
| | - Kentaro Yamaguchi
- ‡Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, 1314-1 Shido, Sanuki, Kagawa 769-2193, Japan
| | - Isao Azumaya
- ⊥Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan
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124
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Fahs S, Patil-Sen Y, Snape TJ. Foldamers as Anticancer Therapeutics: Targeting Protein-Protein Interactions and the Cell Membrane. Chembiochem 2015; 16:1840-1853. [DOI: 10.1002/cbic.201500188] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Indexed: 01/10/2023]
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125
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deRonde BM, Tew GN. Development of protein mimics for intracellular delivery. Biopolymers 2015; 104:265-80. [PMID: 25858701 PMCID: PMC4516575 DOI: 10.1002/bip.22658] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 03/24/2015] [Accepted: 03/30/2015] [Indexed: 12/19/2022]
Abstract
Designing delivery agents for therapeutics is an ongoing challenge. As treatments and desired cargoes become more complex, the need for improved delivery vehicles becomes critical. Excellent delivery vehicles must ensure the stability of the cargo, maintain the cargo's solubility, and promote efficient delivery and release. In order to address these issues, many research groups have looked to nature for design inspiration. Proteins, such as HIV-1 trans-activator of transcription (TAT) and Antennapedia homeodomain protein, are capable of crossing cellular membranes. However, due to the complexities of their structures, they are synthetically challenging to reproduce in the laboratory setting. Being able to incorporate the key features of these proteins that enable cell entry into simpler scaffolds opens up a wide range of opportunities for the development of new delivery reagents with improved performance. This review charts the development of protein mimics based on cell-penetrating peptides (CPPs) and how structure-activity relationships (SARs) with these molecules and their protein counterparts ultimately led to the use of polymeric scaffolds. These scaffolds deviate from the normal peptide backbone, allowing for simpler, synthetic procedures to make carriers and tune chemical compositions for application specific needs. Successful design of polymeric protein mimics would allow researchers to further understand the key features in proteins and peptides necessary for efficient delivery and to design the next generation of more efficient delivery reagents.
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Affiliation(s)
- Brittany M deRonde
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, MA, 01003
| | - Gregory N Tew
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, MA, 01003
- Department of Veterinary and Animal Sciences, University of Massachusetts Amherst, Amherst, MA, 01003
- Molecular and Cellular Biology Program, University of Massachusetts Amherst, Amherst, MA, 01003
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126
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Tanda K, Eto R, Kato K, Oba M, Ueda A, Suemune H, Doi M, Demizu Y, Kurihara M, Tanaka M. Peptide foldamers composed of six-membered ring α,α-disubstituted α-amino acids with two changeable chiral acetal moieties. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.04.031] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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127
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Amphiphilic oligoamide α-helix peptidomimetics inhibit islet amyloid polypeptide aggregation. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.02.132] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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128
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Abe H, Kayamori F, Inouye M. Glycosyl-Templated Chiral Helix Stapling of Ethynylpyridine Oligomers by Alkene Metathesis between Inter-Pitch Side Chains. Chemistry 2015; 21:9405-13. [DOI: 10.1002/chem.201501102] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Indexed: 11/10/2022]
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129
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Synthesis and secondary conformations of homochiral β-oligopeptides containing aryl side chains. Chem Res Chin Univ 2015. [DOI: 10.1007/s40242-015-4423-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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130
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Le Bailly BAF, Clayden J. Controlling the sign and magnitude of screw-sense preference from the C-terminus of an achiral helical foldamer. Chem Commun (Camb) 2015; 50:7949-52. [PMID: 24918692 DOI: 10.1039/c4cc03261f] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The global screw-sense preference of an achiral helical oligomer may be controlled by a single chiral monomer located at one terminus. Remarkably, maximal control is induced in oligomers of the achiral quaternary amino acid Aib by a single C-terminal alaninamide residue, probably because the Ala side chain, though small, is compatible with a 310 helical conformation. The presence or absence of a C-terminal hydrogen bond donor determines the screw sense of the entire oligomer.
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Affiliation(s)
- Bryden A F Le Bailly
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK.
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131
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Okuda H, Koyama Y, Uchida S, Michinobu T, Sogawa H, Takata T. Reversible Transformation of a One-Handed Helical Foldamer Utilizing a Planarity-Switchable Spacer and C2-Chiral Spirobifluorene Units. ACS Macro Lett 2015; 4:462-466. [PMID: 35596314 DOI: 10.1021/acsmacrolett.5b00176] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Polymeric quaterthiophenes containing optically active C2-chiral spirobifluorene skeletons were synthesized as a new type of helical foldamers, and their higher-order structures were investigated. Oxidization of quaterthiophene moieties caused the spacer units to be in planar structure, leading the conformation of the polymer to be a coil-shaped, rigid helix. This transformation was reversibly performed.
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Affiliation(s)
- Hitoshi Okuda
- Department
of Organic and
Polymeric Materials, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Yasuhito Koyama
- Department
of Organic and
Polymeric Materials, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Satoshi Uchida
- Department
of Organic and
Polymeric Materials, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Tsuyoshi Michinobu
- Department
of Organic and
Polymeric Materials, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Hiromitsu Sogawa
- Department
of Organic and
Polymeric Materials, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Toshikazu Takata
- Department
of Organic and
Polymeric Materials, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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132
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Methyl 2-[(2-{2-[(2-acetamidophenyl)ethynyl]benzamido} phenyl)ethynyl]benzoate. MOLBANK 2015. [DOI: 10.3390/m854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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133
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Itoh T, Tachino K, Akira N, Uno T, Kubo M, Tohnai N, Miyata M. Twofold Helical Polymerization: Thermal Solid-State Polymerization of 7-Cyano-7-(2′-haloethoxycarbonyl)-1,4-benzoquinone Methides. Macromolecules 2015. [DOI: 10.1021/ma502606s] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | | | | | - Norimitsu Tohnai
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, 2-1
Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Mikiji Miyata
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, 2-1
Yamadaoka, Suita, Osaka 565-0871, Japan
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134
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Sharma GV, Venkateshwarlu G, Katukuri S, Ramakrishna KV, Sarma AV. Design and synthesis of novel oxetane β3-amino acids and α, β-peptides. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.02.039] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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135
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Le Bailly BAF, Byrne L, Diemer V, Foroozandeh M, Morris GA, Clayden J. Flaws in foldamers: conformational uniformity and signal decay in achiral helical peptide oligomers. Chem Sci 2015; 6:2313-2322. [PMID: 29308146 PMCID: PMC5645781 DOI: 10.1039/c4sc03944k] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Accepted: 01/19/2015] [Indexed: 11/21/2022] Open
Abstract
Although foldamers, by definition, are extended molecular structures with a well-defined conformation, minor conformers must be populated at least to some extent in solution. We present a quantitative analysis of these minor conformers for a series of helical oligomers built from achiral but helicogenic α-amino acids. By measuring the chain length dependence or chain position dependence of NMR or CD quantities that measure screw-sense preference in a helical oligomer, we quantify values for the decay constant of a conformational signal as it passes through the molecular structure. This conformational signal is a perturbation of the racemic mixture of M and P helices that such oligomers typically adopt by the inclusion of an N or C terminal chiral inducer. We show that decay constants may be very low (<1% signal loss per residue) in non-polar solvents, and we evaluate the increase in decay constant that results in polar solvents, at higher temperatures, and with more conformationally flexible residues such as Gly. Decay constants are independent of whether the signal originates from the N or the C terminus. By interpreting the decay constant in terms of the probability with which conformations containing a screw-sense reversal are populated, we quantify the populations of these alternative minor conformers within the overall ensemble of secondary structures adopted by the foldamer. We deduce helical persistence lengths for Aib polymers that allow us to show that in a non-polar solvent a peptide helix, even in the absence of chiral residues, may continue with the same screw sense for approximately 200 residues.
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Affiliation(s)
- Bryden A F Le Bailly
- School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , UK .
| | - Liam Byrne
- School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , UK .
| | - Vincent Diemer
- School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , UK .
| | | | - Gareth A Morris
- School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , UK .
| | - Jonathan Clayden
- School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , UK .
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136
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Adam A, Haberhauer G. Imidazole-peptide foldamers: parabolic dependence of the folding process on the water content of the solvent. Chemistry 2015; 21:4333-9. [PMID: 25656936 DOI: 10.1002/chem.201406277] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Indexed: 11/06/2022]
Abstract
Oligomers of azole peptides have been isolated from a multitude of marine organisms. Up to now, these azole-containing dipeptide-analogue oligomers have only been found as cyclic n-mers (mostly tri- and tetramers) in nature. Herein, we show that imidazole-containing pseudopeptides form helixlike secondary structures in different solvents. The screw sense of the helix can be determined by attaching a single chiral imidazole unit to the N terminus of the oligomer. Investigation by means of circular dichroism (CD) spectroscopy showed that the folding process of the helix depends on the water content of the solvent in a parabolic way. In a pure organic medium, the helix is stabilized by hydrogen bonds between the hydrogen atoms of the amide groups and the nitrogen atoms of the azole ring. In aqueous solution, the formation of the helix is driven by dispersion interactions. The formation of the helix is more pronounced in aqueous solution than in organic solvents.
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Affiliation(s)
- Abdulselam Adam
- Institut für Organische Chemie, Fakultät für Chemie, Universität Duisburg-Essen, Universitätsstrasse 7, 45117 Essen (Germany), Fax: (+49) 201-183-4252
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137
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Efficient separation of thorium from rare earths with a hydrogen-bonded oligoaramide extractant in highly acidic media. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-015-3990-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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138
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Mondal T, Sakurai T, Yoneda S, Seki S, Ghosh S. Semiconducting Nanotubes by Intrachain Folding Following Macroscopic Assembly of a Naphthalene–Diimide (NDI) Appended Polyurethane. Macromolecules 2015. [DOI: 10.1021/ma502410d] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Tathagata Mondal
- Polymer Science Unit, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata, India-700032
| | - Tsuneaki Sakurai
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka University, Osaka, Japan
| | - Satoru Yoneda
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka University, Osaka, Japan
| | - Shu Seki
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka University, Osaka, Japan
| | - Suhrit Ghosh
- Polymer Science Unit, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata, India-700032
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139
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Wang Y, Frasconi M, Liu WG, Liu Z, Sarjeant AA, Nassar MS, Botros YY, Goddard WA, Stoddart JF. Folding of Oligoviologens Induced by Radical–Radical Interactions. J Am Chem Soc 2015; 137:876-85. [DOI: 10.1021/ja5111305] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yuping Wang
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Marco Frasconi
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Wei-Guang Liu
- Materials
and Process Simulation Center, California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, United States
| | - Zhichang Liu
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Amy A. Sarjeant
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Majed S. Nassar
- Joint
Center of Excellence in Integrated Nano-Systems (JCIN), King Abdul-Aziz City for Science and Technology (KACST), P.O. Box 6086, Riyadh 11442, Saudi Arabia
| | - Youssry Y. Botros
- Joint
Center of Excellence in Integrated Nano-Systems (JCIN), King Abdul-Aziz City for Science and Technology (KACST), P.O. Box 6086, Riyadh 11442, Saudi Arabia
- University
Research Office, Intel Corporation, Building RNB-6-61, 2200 Mission
College Boulevard, Santa Clara, California 95054, United States
| | - William A. Goddard
- Materials
and Process Simulation Center, California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, United States
| | - J. Fraser Stoddart
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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140
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Guo R, Zhang L, Wang H, Zhang DW, Li ZT. Hydrophobically driven twist sense bias of hollow helical foldamers of aromatic hydrazide polymers in water. Polym Chem 2015. [DOI: 10.1039/c5py00129c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aromatic hydrazide polymers bearingS-chiral tetraethylene glycol chains can fold into M hollow helices in water driven by the hydrophobicity.
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Affiliation(s)
- Rong Guo
- Department of Chemistry
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)
- Fudan University
- Shanghai 200433
- China
| | - Liang Zhang
- Department of Chemistry
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)
- Fudan University
- Shanghai 200433
- China
| | - Hui Wang
- Department of Chemistry
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)
- Fudan University
- Shanghai 200433
- China
| | - Dan-Wei Zhang
- Department of Chemistry
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)
- Fudan University
- Shanghai 200433
- China
| | - Zhan-Ting Li
- Department of Chemistry
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)
- Fudan University
- Shanghai 200433
- China
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141
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Solà J, Bolte M, Alfonso I. Conformational promiscuity in triazolamers derived from quaternary amino acids mimics peptide behaviour. Org Biomol Chem 2015; 13:10797-801. [DOI: 10.1039/c5ob01461a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Oligomers made by click chemistry display a duality of secondary structures similar to natural peptides as inferred by NMR spectroscopy and X-ray diffraction experiments.
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Affiliation(s)
- Jordi Solà
- Department of Biological Chemistry and Molecular Modelling
- Institute of Advanced Chemistry of Catalonia (IQAC-CSIC)
- Jordi Girona 18-26
- Barcelona
- Spain
| | - Michael Bolte
- Institut für Anorganische Chemie
- J.-W.-Goethe-Universität
- D-60438 Frankfurt/Main
- Germany
| | - Ignacio Alfonso
- Department of Biological Chemistry and Molecular Modelling
- Institute of Advanced Chemistry of Catalonia (IQAC-CSIC)
- Jordi Girona 18-26
- Barcelona
- Spain
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142
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Sarkar R, Debnath M, Maji K, Haldar D. Solvent assisted structural diversity: supramolecular sheet and double helix of a short aromatic γ-peptide. RSC Adv 2015. [DOI: 10.1039/c5ra12831e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Solvent interaction has a significant effect on the molecular motions, folding and self-assembly of short aromatic γ-peptides that leads to a change in initial helical conformation.
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Affiliation(s)
- Rajib Sarkar
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- India
| | - Mintu Debnath
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- India
| | - Krishnendu Maji
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- India
| | - Debasish Haldar
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- India
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143
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Zhang YC, Zhang DW, Wang H, Zhou Y, Li ZT. Bipyridinium radical cation dimerization-driven polymeric pleated foldamers and a homoduplex that undergo ion-tuned interconversion. Polym Chem 2015. [DOI: 10.1039/c5py00419e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Radical cation dimerization induces bipyridinium-derived polymers to form pleated secondary structures and a homoduplex which can be tuned by ammonium to interconvert.
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Affiliation(s)
- Yun-Chang Zhang
- Department of Chemistry
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)
- Fudan University
- Shanghai 200433
- China
| | - Dan-Wei Zhang
- Department of Chemistry
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)
- Fudan University
- Shanghai 200433
- China
| | - Hui Wang
- Department of Chemistry
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)
- Fudan University
- Shanghai 200433
- China
| | - Yaming Zhou
- Department of Chemistry
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)
- Fudan University
- Shanghai 200433
- China
| | - Zhan-Ting Li
- Department of Chemistry
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)
- Fudan University
- Shanghai 200433
- China
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144
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Zhang P, Zhang L, Wang H, Zhang DW, Li ZT. Helical folding of an arylamide polymer in water and organic solvents of varying polarity. Polym Chem 2015. [DOI: 10.1039/c5py00096c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An arylamide polymer is driven by the solvophobicity and hydrogen bonding to form helical conformation in solvents of different polarity.
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Affiliation(s)
- Peng Zhang
- Department of Chemistry
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)
- Fudan University
- Shanghai 200433
- China
| | - Liang Zhang
- Department of Chemistry
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)
- Fudan University
- Shanghai 200433
- China
| | - Hui Wang
- Department of Chemistry
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)
- Fudan University
- Shanghai 200433
- China
| | - Dan-Wei Zhang
- Department of Chemistry
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)
- Fudan University
- Shanghai 200433
- China
| | - Zhan-Ting Li
- Department of Chemistry
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)
- Fudan University
- Shanghai 200433
- China
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145
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Ma W, Wang C, Li J, Zhang K, Lu YJ, Huo Y, Zeng H. The Dynamics, energetics and selectivity of water chain-containing aquapores created by the self-assembly of aquafoldamer molecules. Org Biomol Chem 2015; 13:10613-9. [DOI: 10.1039/c5ob01732g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Self-assembled hollow tubular aquapores were found to be stable, very dynamic yet highly selective toward recognition of water molecules.
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Affiliation(s)
- Wenliang Ma
- Faculty of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangdong
- China
| | - Chunquan Wang
- Faculty of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangdong
- China
| | - Juntong Li
- Faculty of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangdong
- China
| | - Kun Zhang
- Faculty of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangdong
- China
- School of Chemical and Environmental Engineering
| | - Yu-Jing Lu
- Faculty of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangdong
- China
| | - Yanping Huo
- Faculty of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangdong
- China
| | - Huaqiang Zeng
- Institute of Bioengineering and Nanotechnology
- The Nanos
- Singapore 138669
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146
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Sharma GVM, Sridhar T, Veena B, Purushotham Reddy P, Reddy SV, Bruneau C, Kunwar AC. Synthesis and conformational studies of α/β2,3-peptides derived from alternating β2,3-amino acids and l-Ala repeats. NEW J CHEM 2015. [DOI: 10.1039/c4nj02031f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new class of α/β2,3-peptides were synthesized from C-linked carbo-β2,3-amino acids (β2,3-Caas) and investigated to understand the impact of the side chains (allyl/propargyl) at the Cα-position on their conformations.
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Affiliation(s)
- Gangavaram V. M. Sharma
- Organic and Biomolecular Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | - Tailor Sridhar
- Organic and Biomolecular Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | - Bacchu Veena
- Organic and Biomolecular Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | - Pothula Purushotham Reddy
- Centre for Nuclear Magnetic Resonance and Structural Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | - Sheri Venkata Reddy
- Organic and Biomolecular Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | | | - Ajit C. Kunwar
- Centre for Nuclear Magnetic Resonance and Structural Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
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147
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Horie M, Ousaka N, Taura D, Yashima E. Chiral tether-mediated stabilization and helix-sense control of complementary metallo-double helices. Chem Sci 2015; 6:714-723. [PMID: 28706634 PMCID: PMC5494540 DOI: 10.1039/c4sc02275k] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Accepted: 09/10/2014] [Indexed: 11/21/2022] Open
Abstract
A series of novel PtII-linked double helices were prepared by inter- or intrastrand ligand-exchange reactions of the complementary duplexes composed of chiral or achiral amidine dimer and achiral carboxylic acid dimer strands joined by trans-PtII-acetylide complexes with PPh3 ligands using chiral and achiral chelating diphosphines. The structure and stability of the PtII-linked double helices were highly dependent on the diphosphine structures. An interstrand ligand exchange took place with chiral and achiral 1,3-diphosphine-based ligands, resulting in trans-PtII-bridged double helices, whose helical structures were quite stable even in dimethyl sulfoxide (DMSO) due to the interstrand cross-link, whereas a 1,2-diphosphine-based ligand produced non-cross-linked cis-PtII-linked duplexes, resulting from an intrastrand ligand-exchange that readily dissociated into single strands in DMSO. When enantiopure 1,3-diphosphine-based ligands were used, the resulting trans-PtII-bridged double helices adopted a preferred-handed helical sense biased by the chirality of the bridged diphosphines. Interestingly, the interstrand ligand exchange with racemic 1,3-diphosphine toward an optically-active PtII-linked duplex, composed of chiral amidine and achiral carboxylic acid strands, was found to proceed in a diastereoselective manner, thus forming complete homochiral trans-PtII-bridged double helices via a unique chiral self-sorting.
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Affiliation(s)
- Miki Horie
- Department of Molecular Design and Engineering , Graduate School of Engineering , Nagoya University , Chikusa-ku , Nagoya 464-8603 , Japan .
| | - Naoki Ousaka
- Venture Business Laboratory , Nagoya University , Chikusa-ku , Nagoya 464-8603 , Japan
| | - Daisuke Taura
- Department of Molecular Design and Engineering , Graduate School of Engineering , Nagoya University , Chikusa-ku , Nagoya 464-8603 , Japan .
| | - Eiji Yashima
- Department of Molecular Design and Engineering , Graduate School of Engineering , Nagoya University , Chikusa-ku , Nagoya 464-8603 , Japan .
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148
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Lal S, Snape TJ. Aromatic amides and ureas as novel molecular probes for diagnosing disease. Med Hypotheses 2014; 83:751-4. [DOI: 10.1016/j.mehy.2014.08.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Accepted: 08/11/2014] [Indexed: 11/30/2022]
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149
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Fimmel B, Son M, Sung YM, Grüne M, Engels B, Kim D, Würthner F. Phenylene Ethynylene-Tethered Perylene Bisimide Folda-Dimer and Folda-Trimer: Investigations on Folding Features in Ground and Excited States. Chemistry 2014; 21:615-30. [DOI: 10.1002/chem.201405231] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Indexed: 11/10/2022]
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150
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Hydrogen-Bonding-Driven Aromatic Foldamers: Their Structural and Functional Evolution. CHEM REC 2014; 15:233-51. [DOI: 10.1002/tcr.201402046] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2014] [Indexed: 12/16/2022]
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