1
|
Fukuda Y, Akamatsu Y, Umetani M, Kise K, Kato K, Osuka A, Tanaka T. Double helices of dissymmetrical α,α'-disubstituted tripyrrins. Org Biomol Chem 2023; 21:1158-1162. [PMID: 36633268 DOI: 10.1039/d2ob02125k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Dissymmetrical α,α'-disubstituted tripyrrins have been prepared using a modified synthetic protocol. Tripyrrin 2a bearing 3,5-bis(trifluoromethyl)phenyl and 4-methoxyphenyl moieties showed an anti-type dimer arrangement in the solid state. In contrast, syn-type dimers were observed for tripyrrin 2b bearing 3,5-bis(trifluoromethyl)phenyl and 3,5-di-t-butylphenyl moieties. In addition, proton-exchange NH tautomerization was observed in 2b.
Collapse
Affiliation(s)
- Yui Fukuda
- Department of Chemistry, Graduate School of Science, Kyoto University, Japan
| | - Yuki Akamatsu
- Department of Chemistry, Graduate School of Science, Kyoto University, Japan
| | - Masataka Umetani
- Department of Chemistry, Graduate School of Science, Kyoto University, Japan
| | - Koki Kise
- Department of Chemistry, Graduate School of Science, Kyoto University, Japan
| | - Kenichi Kato
- Department of Chemistry, Graduate School of Science, Kyoto University, Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Japan
| | - Takayuki Tanaka
- Department of Chemistry, Graduate School of Science, Kyoto University, Japan.,Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Japan
| |
Collapse
|
2
|
Sobiech TA, Zhong Y, Miller DP, McGrath JK, Scalzo CT, Redington MC, Zurek E, Gong B. Ultra-Tight Host-Guest Binding with Exceptionally Strong Positive Cooperativity. Angew Chem Int Ed Engl 2022; 61:e202213467. [PMID: 36259360 DOI: 10.1002/anie.202213467] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Indexed: 11/16/2022]
Abstract
Cooperativity plays a critical role in self-assembly and molecular recognition. A rigid aromatic oligoamide macrocycle with a cyclodirectional backbone binds with DABCO-based cationic guests in a 2 : 1 ratio in high affinities (Ktotal ≈1013 M-2 ) in the highly polar DMF. The host-guest binding also exhibits exceptionally strong positive cooperativity quantified by interaction factors α that are among the largest for synthetic host-guest systems. The unusually strong positive cooperativity, revealed by isothermal titration calorimetry (ITC) and fully corroborated by mass spectrometry, NMR and computational studies, is driven by guest-induced stacking of the macrocycles and stabilization from the alkyl end chains of the guests, interactions that appear upon binding the second macrocycle. With its tight binding driven by extraordinary positive cooperativity, this host-guest system provides a tunable platform for studying molecular interactions and for constructing stable supramolecular assemblies.
Collapse
Affiliation(s)
- Thomas A Sobiech
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Yulong Zhong
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Daniel P Miller
- Department of Chemistry, Hofstra University, Hempstead, NY 11549, USA
| | - Jillian K McGrath
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Christina T Scalzo
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Morgan C Redington
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Eva Zurek
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Bing Gong
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| |
Collapse
|
3
|
Nishiyama A, Ueta K, Umetani M, Akamatsu Y, Tanaka T. Substituent Effects at the 5,10-Positions of Dianilinotripyrrins on Their Dimerization Themodynamics. Chem Asian J 2022; 17:e202200562. [PMID: 35762792 DOI: 10.1002/asia.202200562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/24/2022] [Indexed: 11/07/2022]
Abstract
Control of the association behavior by the molecular design is one of the most essential benefits in artificial supramolecular systems. 1,14-Dianilinotripyrrin has recently emerged as a novel conjugated molecule which forms a double helix in non-polar solvents with the aid of multiple interstrand hydrogen bonding interactions. In this work, we investigated the substituent effects at the 5,10-positions of tripyrrin on their association thermodynamics. This study illuminated two key findings; 1) electronic tuning by the para-substituents reduce the entropic costs thereby slightly improve the association constants, and 2) ortho-substituents force the tripyrrin core to be relatively planar, which significantly decrease the association constant due to less feasible π-stacking.
Collapse
Affiliation(s)
- Ayane Nishiyama
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, 606-8502, Kyoto, Japan
| | - Kento Ueta
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, 606-8502, Kyoto, Japan
| | - Masataka Umetani
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, 606-8502, Kyoto, Japan
| | - Yuki Akamatsu
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, 606-8502, Kyoto, Japan
| | - Takayuki Tanaka
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, 606-8502, Kyoto, Japan
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyotodaigaku Katsura, Nishikyo-ku, 615-8510, Kyoto, Japan
| |
Collapse
|
4
|
Iadevaia G, Swain JA, Núñez-Villanueva D, Bond AD, Hunter CA. Folding and duplex formation in mixed sequence recognition-encoded m-phenylene ethynylene polymers. Chem Sci 2021; 12:10218-10226. [PMID: 34377409 PMCID: PMC8336474 DOI: 10.1039/d1sc02288a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 06/30/2021] [Indexed: 11/21/2022] Open
Abstract
Oligomers equipped with complementary recognition units have the potential to encode and express chemical information in the same way as nucleic acids. The supramolecular assembly properties of m-phenylene ethynylene polymers equipped with H-bond donor (D = phenol) and H-bond acceptor (A = phosphine oxide) side chains have been investigated in chloroform solution. Polymerisation of a bifunctional monomer in the presence of a monofunctional chain stopper was used for the one pot synthesis of families of m-phenylene ethynylene polymers with sequences ADnA or DAnD (n = 1-5), which were separated by chromatography. All of the oligomers self-associate due to intermolecular H-bonding interactions, but intramolecular folding of the monomeric single strands can be studied in dilute solution. NMR and fluorescence spectroscopy show that the 3-mers ADA and DAD do not fold, but there are intramolecular H-bonding interactions for all of the longer sequences. Nevertheless, 1 : 1 mixtures of sequence complementary oligomers all form stable duplexes. Duplex stability was quantified using DMSO denaturation experiments, which show that the association constant for duplex formation increases by an order of magnitude for every base-pairing interaction added to the chain, from 103 M-1 for ADA·DAD to 105 M-1 for ADDDA·DAAAD. Intramolecular folding is the major pathway that competes with duplex formation between recognition-encoded oligomers and limits the fidelity of sequence-selective assembly. The experimental approach described here provides a practical strategy for rapid evaluation of suitability for the development of programmable synthetic polymers.
Collapse
Affiliation(s)
- Giulia Iadevaia
- Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Jonathan A Swain
- Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Diego Núñez-Villanueva
- Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Andrew D Bond
- Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Christopher A Hunter
- Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| |
Collapse
|
5
|
Ueta K, Umetani M, Osuka A, Pantoş GD, Tanaka T. Single- and double-helices of α,α'-dibenzylaminotripyrrin: solution and solid state studies. Chem Commun (Camb) 2021; 57:2617-2620. [PMID: 33587742 DOI: 10.1039/d1cc00208b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The dimeric association of α,α'-di(benzylamino)tripyrrin in chloroform was found to be 40 times less effective than that of previously reported α,α'-dianilinotripyrrin, which, however, led us to observe the co-crystal structure of single and double helix forms. Attachment of chiral phenylethylamines on the same tripyrrin platform was also performed to induce helical chirality.
Collapse
Affiliation(s)
- Kento Ueta
- Department of Chemistry, Graduate School of Science, Kyoto University, Japan.
| | - Masataka Umetani
- Department of Chemistry, Graduate School of Science, Kyoto University, Japan.
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Japan.
| | | | - Takayuki Tanaka
- Department of Chemistry, Graduate School of Science, Kyoto University, Japan.
| |
Collapse
|
6
|
Zong Z, Li P, Hao A, Xing P. Self-Assembly of N-Terminal Aryl Amino Acids into Adaptive Single- and Double-Strand Helices. J Phys Chem Lett 2020; 11:4147-4155. [PMID: 32368918 DOI: 10.1021/acs.jpclett.0c00997] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Helical structures are important features of many important biomacromolecules such as double helices and single α-helices in DNA and protein, respectively, yet the self-organization of short oligopeptides (<3) or independent amino acids into artificial helical structures on the atomic level remains mysterious. Here we present the direct construction of artificial double and single helices from N-terminated aryl amino acids (ferrocene phenylalanine (Phe) conjugates) despite both Phe and Phe-Phe dipeptide self-aggregations adopting supramolecular β-sheet structures, which also demonstrated chirality evolution exposed to small molecular binders. In the solid state, the box-shaped building unit stacks into a double helix with enantiomer-resolved handedness driven orthogonally by H-bonds and the CH-π interaction. The entire double helix is noncovalently linked except for the hybridization regions. Asymmetric H-bonds between carboxylic acids and amides facilitates the one-dimensional helical packing of amino acid residues. The ditopic building unit adopts intramolecular H-bonds, facilitating single-strand helix formation. In aqueous self-assemblies, the superhelical structures were retained, which underwent chirality transfer and handedness inversion upon complexation orthogonally by H-bonds and charge-transfer interaction, showing adaptivity to environmental factors.
Collapse
Affiliation(s)
- Zhaohui Zong
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China
| | - Peizhou Li
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China
| | - Aiyou Hao
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China
| | - Pengyao Xing
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China
| |
Collapse
|
7
|
Single-handed supramolecular double helix of homochiral bis(N-amidothiourea) supported by double crossed C-I···S halogen bonds. Nat Commun 2019; 10:3610. [PMID: 31399581 PMCID: PMC6689071 DOI: 10.1038/s41467-019-11539-5] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 07/18/2019] [Indexed: 02/07/2023] Open
Abstract
The natural DNA double helix consists of two strands of nucleotides that are held together by multiple hydrogen bonds. Here we propose to build an artificial double helix from fragments of two strands connected by covalent linkages therein, but with halogen bonding as the driving force for self-assembling the fragments to the double helix. We succeed in building such a double helix in both solution and solid state, by using a bilateral N-(p-iodobenzoyl)alanine based amidothiourea which in its folded cis-form allows double and crossed C−I···S halogen bonds that lead to right- or left-handed double helix when the two alanine residues are of the same L,L- or D,D-configuration. The double helix forms in dilute CH3CN solution of the micromolar concentration level, e.g., 5.6 μM from 2D NOESY experiments and exhibits a high thermal stability in solution up to 75 °C, suggesting cooperative and thereby strong intermolecular double crossed halogen bonding that makes the double helix stable. This is supported by the observed homochiral self-sorting in solution. Building an artificial double helix is a compelling challenge, and most strategies rely on the intertwining of two helical strands. Here, in a very different approach, the authors construct a supramolecular double helix from multiple synthetic small molecules chained together by double crossed halogen bonds.
Collapse
|
8
|
Umetani M, Tanaka T, Osuka A. Conjugated double helices via self-dimerization of α,α'-dianilinotripyrrins. Chem Sci 2018; 9:6853-6859. [PMID: 30310618 PMCID: PMC6114996 DOI: 10.1039/c8sc02739k] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 07/16/2018] [Indexed: 01/25/2023] Open
Abstract
A new motif for artificial double helices was developed on the basis of α,α'-disubstituted tripyrrin. α,α'-Dibromotripyrrin 3 was prepared by gentle bromination at the pyrrolic α-positions of 5,10-diphenyltripyrrane followed by oxidation with DDQ. Nucleophilic substitution reactions of 3 with anilines proceeded efficiently to furnish a series of α,α'-dianilinotripyrrins 4-11, which displayed monomeric and dimeric forms depending upon the solvent used for crystallization and the structures of the substituted anilines. Dimeric forms show double helical structures with smooth π-conjugation as indicated by their absorption spectra. van't-Hoff plot analyses revealed that the dimerizations in CDCl3 are enthalpy-driven. Larger association constants of the dimerization are attained for 3,5-di-t-butylanilino- and 3,5-bis(trifluoromethyl)anilino-substituted tripyrrins (7 and 8) via additional multiple intermolecular interactions. In a nonpolar and aprotic solvent, tripyrrins (9 and 10) bearing bulkier 1-naphthylamino and mesitylamino groups do not dimerize but undergo unique tautomerization.
Collapse
Affiliation(s)
- Masataka Umetani
- Department of Chemistry , Graduate School of Science , Kyoto University , Japan
| | - Takayuki Tanaka
- Department of Chemistry , Graduate School of Science , Kyoto University , Japan
| | - Atsuhiro Osuka
- Department of Chemistry , Graduate School of Science , Kyoto University , Japan
| |
Collapse
|
9
|
Zhang Y, Cao R, Shen J, Detchou CSF, Zhong Y, Wang H, Zou S, Huang Q, Lian C, Wang Q, Zhu J, Gong B. Hydrogen-Bonded Duplexes with Lengthened Linkers. Org Lett 2018; 20:1555-1558. [DOI: 10.1021/acs.orglett.8b00283] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yukun Zhang
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
- Graduate University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ruikai Cao
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Jie Shen
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, 138669, Singapore
| | - Cadnel S. F. Detchou
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Yulong Zhong
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Heng Wang
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
- Graduate University of Chinese Academy of Sciences, Beijing 100049, China
| | - Sheng Zou
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Qingfei Huang
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Chunxia Lian
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Qiwei Wang
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Jin Zhu
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Bing Gong
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| |
Collapse
|
10
|
Kheria S, Rayavarapu S, Kotmale AS, Sanjayan GJ. Three in one: prototropy-free highly stable AADD-type self-complementary quadruple hydrogen-bonded molecular duplexes with a built-in fluorophore. Chem Commun (Camb) 2017; 53:2689-2692. [PMID: 28197572 DOI: 10.1039/c6cc09478c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
This communication reports an effective approach for addressing the prototropy-related problems in heterocycle-based AADD-type self-assembling systems by freezing their hydrogen-bonding codes, by utilizing intramolecular bifurcated hydrogen bonding interactions. Using this strategy, we have also developed a hydroquinone-conjugated AADD-type self-assembling system adorned with three valuable features such as prototropy-free dimerization yielding single duplexes, high duplex stability and a built-in fluorophore, which would augment its application potential. The rational approach used herein to arrest prototropic shift may also find application elsewhere, wherein proton shift-mediated structural changes become a detrimental factor.
Collapse
Affiliation(s)
- Sanjeev Kheria
- Organic Chemistry Division, CSIR-National Chemical Laboratory (CSIR-NCL), Dr Homi Bhabha Road, Pune-411008, India.
| | - Suresh Rayavarapu
- Organic Chemistry Division, CSIR-National Chemical Laboratory (CSIR-NCL), Dr Homi Bhabha Road, Pune-411008, India.
| | - Amol S Kotmale
- Central NMR Facility, CSIR-National Chemical Laboratory (CSIR-NCL), Dr Homi Bhabha Road, Pune-411008, India
| | - Gangadhar J Sanjayan
- Organic Chemistry Division, CSIR-National Chemical Laboratory (CSIR-NCL), Dr Homi Bhabha Road, Pune-411008, India.
| |
Collapse
|
11
|
Kushida Y, Saito N, Shigeno M, Yamaguchi M. Multiple competing pathways for chemical reaction: drastic reaction shortcut for the self-catalytic double-helix formation of helicene oligomers. Chem Sci 2017; 8:1414-1421. [PMID: 28451281 PMCID: PMC5390785 DOI: 10.1039/c6sc01893a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Accepted: 10/13/2016] [Indexed: 12/16/2022] Open
Abstract
Competition among multiple pathways in a chemical reaction exhibits notable kinetic phenomena, particularly when amplification by self-catalysis is involved. A pseudoenantiomeric 1 : 1 mixture of an aminomethylene helicene (P)-tetramer and an (M)-pentamer formed enantiomeric hetero-double helices B and C in solution when random coil A was cooled. When a solution of A at 70 °C was directly cooled to 25 °C, the A-to-B reaction was predominant, then B was slowly converted to C over 60 h. The slow conversion in the A-to-B-to-C reaction was due to the formation of the hetero-double helix B, which was an off-pathway intermediate, and the slow B-to-C conversion. In contrast, when a solution of A at 70 °C was snap-cooled to -25 °C before then maintaining the solution at 25 °C, the A-to-C reaction predominated, and the formation of C was complete within 4 h. The reactions involve competition between the self-catalytic A-to-B and A-to-C pathways, where B and C catalyze the A-to-B and A-to-C reactions, respectively. Subtle differences in the initial states generated by thermal pretreatment were amplified by the self-catalytic process, which resulted in a drastic reaction shortcut.
Collapse
Affiliation(s)
- Yo Kushida
- Department of Organic Chemistry , Graduate School of Pharmaceutical Sciences , Tohoku University , Aoba , Sendai , 980-8578 , Japan .
| | - Nozomi Saito
- Department of Organic Chemistry , Graduate School of Pharmaceutical Sciences , Tohoku University , Aoba , Sendai , 980-8578 , Japan .
| | - Masanori Shigeno
- Department of Organic Chemistry , Graduate School of Pharmaceutical Sciences , Tohoku University , Aoba , Sendai , 980-8578 , Japan .
| | - Masahiko Yamaguchi
- Department of Organic Chemistry , Graduate School of Pharmaceutical Sciences , Tohoku University , Aoba , Sendai , 980-8578 , Japan .
| |
Collapse
|
12
|
Yashima E, Ousaka N, Taura D, Shimomura K, Ikai T, Maeda K. Supramolecular Helical Systems: Helical Assemblies of Small Molecules, Foldamers, and Polymers with Chiral Amplification and Their Functions. Chem Rev 2016; 116:13752-13990. [PMID: 27754649 DOI: 10.1021/acs.chemrev.6b00354] [Citation(s) in RCA: 1198] [Impact Index Per Article: 149.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
In this review, we describe the recent advances in supramolecular helical assemblies formed from chiral and achiral small molecules, oligomers (foldamers), and helical and nonhelical polymers from the viewpoints of their formations with unique chiral phenomena, such as amplification of chirality during the dynamic helically assembled processes, properties, and specific functionalities, some of which have not been observed in or achieved by biological systems. In addition, a brief historical overview of the helical assemblies of small molecules and remarkable progress in the synthesis of single-stranded and multistranded helical foldamers and polymers, their properties, structures, and functions, mainly since 2009, will also be described.
Collapse
Affiliation(s)
- Eiji Yashima
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University , Chikusa-ku, Nagoya 464-8603, Japan
| | - Naoki Ousaka
- Department of Molecular Design and Engineering, Graduate School of Engineering, 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
| | - Kouhei Shimomura
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University , Chikusa-ku, Nagoya 464-8603, Japan
| | - Tomoyuki Ikai
- Graduate School of Natural Science and Technology, Kanazawa University , Kakuma-machi, Kanazawa 920-1192, Japan
| | - Katsuhiro Maeda
- Graduate School of Natural Science and Technology, Kanazawa University , Kakuma-machi, Kanazawa 920-1192, Japan
| |
Collapse
|
13
|
Liu R, Chen S, Cheng S, Baker ES, Smith RD, Zeng XC, Gong B. Surprising impact of remote groups on the folding--unfolding and dimer-chain equilibria of bifunctional H-bonding unimers. Chem Commun (Camb) 2016; 52:3773-6. [PMID: 26830456 PMCID: PMC5168931 DOI: 10.1039/c6cc00224b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Oligoamide 1, consisting of two H-bonding units linked by a trimethylene linker, was previously found to form a very stable, folded dimer. In this work, replacing the side chains and end groups of 1 led to derivatives that show the surprising impact of end groups on the folding and dimer-chain equilibria of the resultant molecules.
Collapse
Affiliation(s)
- Rui Liu
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA. and College of Chemistry, Beijing Normal University, Beijing 100875, China
| | | | - Shuang Cheng
- Kuang Yaming Honors School, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Erin S Baker
- Earth and Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - Richard D Smith
- Earth and Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - Xiao Cheng Zeng
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
| | - Bing Gong
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA. and College of Chemistry, Beijing Normal University, Beijing 100875, China
| |
Collapse
|
14
|
Saito N, Kanie K, Matsubara M, Muramatsu A, Yamaguchi M. Dynamic and Reversible Polymorphism of Self-Assembled Lyotropic Liquid Crystalline Systems Derived from Cyclic Bis(ethynylhelicene) Oligomers. J Am Chem Soc 2015; 137:6594-601. [DOI: 10.1021/jacs.5b02003] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nozomi Saito
- Frontier
Research Institute for Interdisciplinary Sciences, Tohoku University , 6-3 Aoba, Sendai 980-8578, Japan
- Department
of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai 980-8578, Japan
| | - Kiyoshi Kanie
- Institute
of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1,
Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Masaki Matsubara
- Institute
of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1,
Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Atsushi Muramatsu
- Institute
of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1,
Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Masahiko Yamaguchi
- Department
of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai 980-8578, Japan
| |
Collapse
|
15
|
Yang Q, Bai L, Zhang Y, Zhu F, Xu Y, Shao Z, Shen YM, Gong B. Dynamic Covalent Diblock Copolymers: Instructed Coupling, Micellation and Redox Responsiveness. Macromolecules 2014. [DOI: 10.1021/ma5017083] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Qinglai Yang
- Shanghai
Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine
(Ministry of Education), Bio-ID Center, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Ling Bai
- School
of Biomedical Engineering, Bio-ID Center, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yuanqing Zhang
- Shanghai
Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Fangxia Zhu
- Shanghai
Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine
(Ministry of Education), Bio-ID Center, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yuhong Xu
- School
of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhifeng Shao
- School
of Biomedical Engineering, Bio-ID Center, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yu-Mei Shen
- Shanghai
Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine
(Ministry of Education), Bio-ID Center, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Bing Gong
- College
of Chemistry, Beijing Normal University, Beijing 100875, China
- Department
of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260, United States
| |
Collapse
|
16
|
Shang J, Gan Q, Dawson SJ, Rosu F, Jiang H, Ferrand Y, Huc I. Self-Association of Aromatic Oligoamide Foldamers into Double Helices in Water. Org Lett 2014; 16:4992-5. [DOI: 10.1021/ol502259y] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Jie Shang
- Université Bordeaux, CBMN, UMR 5248, Institut Européen de
Chimie Biologie, 2 rue Robert Escarpit 33607 Pessac, France
- CNRS, CBMN, UMR 5248, 33607 Pessac, France
- Beijing
National Laboratory for Molecular Sciences, CAS Key Laboratory of
Photochemistry, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190, China
| | - Quan Gan
- Université Bordeaux, CBMN, UMR 5248, Institut Européen de
Chimie Biologie, 2 rue Robert Escarpit 33607 Pessac, France
- CNRS, CBMN, UMR 5248, 33607 Pessac, France
| | - Simon J. Dawson
- Université Bordeaux, CBMN, UMR 5248, Institut Européen de
Chimie Biologie, 2 rue Robert Escarpit 33607 Pessac, France
- CNRS, CBMN, UMR 5248, 33607 Pessac, France
| | - Frédéric Rosu
- Université Bordeaux, UMS 3033/US 001, IECB, 2 rue Robert Escarpit 33607 Pessac, France
- CNRS, IECB, UMS 3033, 33607 Pessac, France
| | - Hua Jiang
- Beijing
National Laboratory for Molecular Sciences, CAS Key Laboratory of
Photochemistry, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190, China
| | - Yann Ferrand
- Université Bordeaux, CBMN, UMR 5248, Institut Européen de
Chimie Biologie, 2 rue Robert Escarpit 33607 Pessac, France
- CNRS, CBMN, UMR 5248, 33607 Pessac, France
| | - Ivan Huc
- Université Bordeaux, CBMN, UMR 5248, Institut Européen de
Chimie Biologie, 2 rue Robert Escarpit 33607 Pessac, France
- CNRS, CBMN, UMR 5248, 33607 Pessac, France
| |
Collapse
|
17
|
Zhou F, Zhang N, Xin X, Zhang X, Liang Y, Zhang R, Dong D. Synthesis of multi-substituted 4-aminopyridines via ring-opening and recyclization reactions of 2-iminopyridines. RSC Adv 2014. [DOI: 10.1039/c4ra02428a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthesis of multi-substituted 4-aminopyridines is developed via a regioselective ring-opening reaction of 2-iminopyridines followed by a 6π-azaelectrocyclization and N-to-N 1,3-sulfonyl group migration process.
Collapse
Affiliation(s)
- Fenguo Zhou
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, China
- School of Chemistry and Environmental Engineering
- Changchun University of Science and Technology
| | - Ning Zhang
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, China
| | - Xiaoqing Xin
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, China
| | - Xun Zhang
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, China
| | - Yongjiu Liang
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, China
| | - Rui Zhang
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, China
| | - Dewen Dong
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, China
| |
Collapse
|
18
|
Baruah PK, Khan S. Self-complementary quadruple hydrogen bonding motifs: from design to function. RSC Adv 2013. [DOI: 10.1039/c3ra43814g] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
|
19
|
Li J, Pandelieva AT, Rowley CN, Woo TK, Wisner JA. Importance of secondary interactions in twisted doubly hydrogen bonded complexes. Org Lett 2012; 14:5772-5. [PMID: 23131112 DOI: 10.1021/ol302803j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Three model hydrogen bond arrays that form complexes with large twist angles between their heterocyclic rings were synthesized differing only in the sequence of their hydrogen bond donors and acceptors. The complementary and self-complementary association of the arrays to form complexes was studied computationally and in solution. The analysis reveals the significant impact secondary interactions have on complex stability in such an arrangement despite the very different topology in comparison to typical planar arrays.
Collapse
Affiliation(s)
- Jiaxin Li
- The University of Western Ontario, Department of Chemistry, London, Ontario, N6A 5B7 Canada
| | | | | | | | | |
Collapse
|