151
|
Chen Z, Popp BV, Bovet CL, Ball ZT. Site-specific protein modification with a dirhodium metallopeptide catalyst. ACS Chem Biol 2011; 6:920-5. [PMID: 21671614 DOI: 10.1021/cb2001523] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new method for chemical protein modification is presented utilizing a dirhodium metallopeptide catalyst. The combination of peptide-based molecular recognition and a dirhodium catalyst with broad side-chain scope enables site-specific protein functionalization. The scope and utility of dirhodium-catalyzed biomolecule modification is expanded to allow reaction at physiological pH and in biologically relevant buffer solutions. Specific protein modification is possible directly in E. coli lysate, demonstrating the remarkable activity and specificity of the designed metallopeptide catalyst. Furthermore, a new biotin-diazo conjugate 1b is presented that allows affinity tagging of target proteins.
Collapse
Affiliation(s)
- Zhen Chen
- Department of Chemistry, Rice University, MS 60, 6100 Main Street, Houston, Texas 77005, United States
| | - Brian V. Popp
- Department of Chemistry, Rice University, MS 60, 6100 Main Street, Houston, Texas 77005, United States
| | - Cara L. Bovet
- Department of Chemistry, Rice University, MS 60, 6100 Main Street, Houston, Texas 77005, United States
| | - Zachary T. Ball
- Department of Chemistry, Rice University, MS 60, 6100 Main Street, Houston, Texas 77005, United States
| |
Collapse
|
152
|
Nakashima T, Fujii R, Kawai T. Regulation of Folding and Photochromic Reactivity of Terarylenes through a Host-Guest Interaction. Chemistry 2011; 17:10951-7. [DOI: 10.1002/chem.201101495] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
153
|
Abstract
Popular explanations of substituent effects in π-stacking interactions hinge upon substituent-induced changes in the aryl π-system. This entrenched view has been used to explain substituent effects in countless stacking interactions over the past 2 decades. However, for a broad range of stacked dimers, it is shown that substituent effects are better described as arising from local, direct interactions of the substituent with the proximal vertex of the other ring. Consequently, substituent effects in stacking interactions are additive, regardless of whether the substituents are on the same or opposite rings. Substituent effects are also insensitive to the introduction of heteroatoms on distant parts of either stacked ring. This local, direct interaction viewpoint provides clear, unambiguous explanations of substituent effects for myriad stacking interactions that are in accord with robust computational data, including DFT-D and new benchmark CCSD(T) results. Many of these computational results cannot be readily explained using traditional π-polarization-based models. Analyses of stacking interactions based solely on the sign of the electrostatic potential above the face of an aromatic ring or the molecular quadrupole moment face a similar fate. The local, direct interaction model provides a simple means of analyzing substituent effects in complex aromatic systems and also offers simple explanations of the crystal packing of fluorinated benzenes and the recently published dependence of the stability of protein-RNA complexes on the regiochemistry of fluorinated base analogues [J. Am. Chem. Soc.2011, 133, 3687-3689].
Collapse
Affiliation(s)
- Steven E Wheeler
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, USA.
| |
Collapse
|
154
|
Kumar M, George SJ. Green fluorescent organic nanoparticles by self-assembly induced enhanced emission of a naphthalene diimide bolaamphiphile. NANOSCALE 2011; 3:2130-2133. [PMID: 21445422 DOI: 10.1039/c1nr10151j] [Citation(s) in RCA: 108] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Naphthalene diimide (NDI) bolaamphiphilic molecules (1) self-assemble in water to form organic nanoparticles, which exhibit self-assembly induced preassociated excimer formation and hence an enhanced green fluorescence.
Collapse
Affiliation(s)
- Mohit Kumar
- Supramolecular Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Bangalore, India 560064
| | | |
Collapse
|
155
|
Mandal AK, Suresh M, Das A. Studies on [3]pseudorotaxane formation from a bis-azacrown derivative as host and imidazolium ion-derivatives as guest. Org Biomol Chem 2011; 9:4811-7. [PMID: 21523292 DOI: 10.1039/c0ob01106a] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A new host molecule, having two azacrown derivatives bridged by luminescent naphthalene diimide functionality, is found to form a [3]pseudorotaxane derivative with imidazolim ion-based guest molecules in non-polar solvents through hydrogen-bonded adduct formation. Depending upon the length of the covalent linker that links the imidazolium ion and the luminescent naphthalene fragment in the guests, the [3]pseudorotaxane adducts adopt different conformation or orientation with varying π-π/donor-acceptor interaction. The mechanism for the naphthalene-based luminescence quenching by NDI fragment on adduct formation was found to be a combination of static, as well as dynamic with static quenching as the dominant one.
Collapse
Affiliation(s)
- Amal Kumar Mandal
- Central Salt & Marine Chemicals Research Institute (CSIR), Bhavnagar: 364002, Gujarat, India
| | | | | |
Collapse
|
156
|
De S, Ramakrishnan S. Folding of a donor-containing ionene by intercalation with an acceptor. Chem Asian J 2011; 6:149-56. [PMID: 21053348 DOI: 10.1002/asia.201000528] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Cationic ionenes that bear electron-rich 1,5-dialkoxynaphthalene (DAN) units within the alkylene segment were allowed to interact with different types of electron-deficient, acceptor-containing molecules in an effort to realize intercalation-induced folding of the ionenes; the collapse of the chains was expected to occur in such a way that the donor and acceptor units become arranged in an alternating fashion. Several acceptor-bearing molecules were prepared by the derivatization of pyromellitic dianhydride and naphthalene tetracarboxylic dianhydride with two different oligoethylene glycol monomethyl ether monoamines. This yielded acceptor molecules with different water solubility and allowed the examination of solvophobic effects in the folding process. UV/Vis spectroscopic studies were carried out by using a 1:1 mixture of the DAN-ionenes and different acceptor molecules in water/DMSO solvent mixtures. The intensity of the charge-transfer (CT) band was seen to increase with the water content in the solvent mixture, thereby suggesting that the intercalation is indeed aided by solvophobic effects. The naphthalene diimide (NDI) bearing acceptor molecules consistently formed significantly stronger CT complexes when compared to the pyromellitic diimide (PDI) bearing acceptor molecules, which is a reflection of the stronger π-stacking tendency of the former. AFM studies of drop-cast films of different ionene-acceptor combinations revealed that compact folded structures are formed most effectively under conditions in which the strongest CT complex is formed.
Collapse
Affiliation(s)
- Swati De
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | | |
Collapse
|
157
|
Liu K, Wang C, Li Z, Zhang X. Superamphiphiles Based on Directional Charge-Transfer Interactions: From Supramolecular Engineering to Well-Defined Nanostructures. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201007167] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
158
|
Liu K, Wang C, Li Z, Zhang X. Superamphiphiles based on directional charge-transfer interactions: from supramolecular engineering to well-defined nanostructures. Angew Chem Int Ed Engl 2011; 50:4952-6. [PMID: 21472920 DOI: 10.1002/anie.201007167] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2010] [Revised: 02/08/2011] [Indexed: 11/07/2022]
Affiliation(s)
- Kai Liu
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | | | | | | |
Collapse
|
159
|
Hamilton JM, Whitehead JR, Williams NJ, El Ojaimi M, Thummel RP, Hancock RD. Metal Ion Complexing Properties of Dipyridoacridine, a Highly Preorganized Tridentate Homologue of 1,10-Phenanthroline. Inorg Chem 2011; 50:3785-90. [DOI: 10.1021/ic200184c] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Joanna M. Hamilton
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Wilmington, North Carolina 28403, United States
| | - Jason R. Whitehead
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Wilmington, North Carolina 28403, United States
| | - Neil J. Williams
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Wilmington, North Carolina 28403, United States
| | - Maya El Ojaimi
- Department of Chemistry, University of Houston, Houston, Texas 77004, United States
| | - Randolph P. Thummel
- Department of Chemistry, University of Houston, Houston, Texas 77004, United States
| | - Robert D. Hancock
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Wilmington, North Carolina 28403, United States
| |
Collapse
|
160
|
Cougnon FBL, Au-Yeung HY, Pantoş GD, Sanders JKM. Exploring the Formation Pathways of Donor−Acceptor Catenanes in Aqueous Dynamic Combinatorial Libraries. J Am Chem Soc 2011; 133:3198-207. [DOI: 10.1021/ja111407m] [Citation(s) in RCA: 114] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Fabien B. L. Cougnon
- University Chemical Laboratory, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, U.K
| | - Ho Yu Au-Yeung
- University Chemical Laboratory, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, U.K
| | - G. Dan Pantoş
- University Chemical Laboratory, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, U.K
- Department of Chemistry, University of Bath, BA2 7AY, Bath, U.K
| | - Jeremy K. M. Sanders
- University Chemical Laboratory, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, U.K
| |
Collapse
|
161
|
Molla MR, Das A, Ghosh S. Self-sorted assembly in a mixture of donor and acceptor chromophores. Chemistry 2011; 16:10084-93. [PMID: 20583059 DOI: 10.1002/chem.201000596] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A simple and novel supramolecular approach for orthogonal self-assembly of donor and acceptor chromophores has been demonstrated. Suitably designed 1,5-dialkoxynaphthalene (DAN) and naphthalene tetracarboxylic acid diimide (NDI) derivatives were used as the donor and acceptor systems, respectively. The molecular design for self-sorting relies upon the precise control over the placement of the self-complementary hydrogen-bonding units (amide functionality) with respect to the individual chromophore. By design, the distances between the two amide groups in the donor and acceptor chromophores are not identical, and consequently the effect of the hydrogen-bonding interaction cannot be maximised in the case of alternate donor-acceptor-type pi-stacking. Thus a relatively weak charge-transfer interaction is expected to be sacrificed, and segregated assembly among the individual chromophores should be enforced by virtue of the much stronger effects of hydrogen bonding and pi-pi stacking. Detailed spectroscopic studies were carried out to probe the mode of self-assembly in various derivatives of the DAN-NDI donor-acceptor pairs to establish the utility of the molecular design as a generalised one for orthogonal self-assembly.
Collapse
Affiliation(s)
- Mijanur Rahaman Molla
- Polymer Science Unit, Indian Association for the Cultivation of Science, 2A & B Raja S. C. Mullick Road, Kolkata, 700 032, India
| | | | | |
Collapse
|
162
|
Basu S, Coskun A, Friedman DC, Olson MA, Benítez D, Tkatchouk E, Barin G, Yang J, Fahrenbach AC, Goddard WA, Stoddart JF. Donor-Acceptor Oligorotaxanes Made to Order. Chemistry 2011; 17:2107-19. [PMID: 21274953 DOI: 10.1002/chem.201001822] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2010] [Indexed: 11/08/2022]
Affiliation(s)
- Subhadeep Basu
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
163
|
Megerle U, Wenninger M, Kutta RJ, Lechner R, König B, Dick B, Riedle E. Unraveling the flavin-catalyzed photooxidation of benzylic alcohol with transient absorption spectroscopy from sub-pico- to microseconds. Phys Chem Chem Phys 2011; 13:8869-80. [DOI: 10.1039/c1cp20190e] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
164
|
Das A, Ghosh S. A generalized supramolecular strategy for self-sorted assembly between donor and acceptor gelators. Chem Commun (Camb) 2011; 47:8922-4. [DOI: 10.1039/c1cc12915e] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
165
|
Bodapati JB, Icil H. A new tunable light-emitting and π-stacked hexa-ethyleneglycol naphthalene-bisimide oligomer: synthesis, photophysics and electrochemical properties. Photochem Photobiol Sci 2011; 10:1283-93. [DOI: 10.1039/c1pp05019b] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
166
|
Anderson TW, Pantoş GD, Sanders JKM. Supramolecular chemistry of monochiral naphthalenediimides. Org Biomol Chem 2011; 9:7547-53. [DOI: 10.1039/c1ob06147j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
167
|
Kennemur JG, Kilgore CA, Novak BM. Adjusting conformational switching behavior of helical polycarbodiimides through substituent induced polarity effects. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/pola.24484] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
168
|
Das A, Ghosh S. Contrasting Self-Assembly and Gelation Properties among Bis-urea- and Bis-amide-Functionalised Dialkoxynaphthalene (DAN) π Systems. Chemistry 2010; 16:13622-8. [DOI: 10.1002/chem.201002208] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
169
|
Alvey PM, Reczek JJ, Lynch V, Iverson BL. A systematic study of thermochromic aromatic donor-acceptor materials. J Org Chem 2010; 75:7682-90. [PMID: 20973470 DOI: 10.1021/jo101498b] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Molar mixtures (1:1) of electron-rich dialkoxynapthalene (Dan) and electron-deficient 1,4,5,8-napthalenetetracarboxylic diimide (Ndi) derivatives form highly tunable, columnar mesophases with a dark red color due to a charge transfer absorbance derived from alternating face-centered stacking. Certain Dan-Ndi mixtures undergo a dramatic color change from dark red to an almost colorless material upon crystallizing from the mesophase. Macroscopic morphology of the solid is not changed during this process. In order to investigate the origins of this interesting thermochromic behavior, Dan and Ndi side chains were systematically altered and their 1:1 mixtures were studied. We have previously speculated that the presence or absence of steric interactions due to side chain branching on the aromatic units controlled the level of color change associated with crystallization. Results from the present study further refine this conclusion including a key crystal structure that provides a structural rationale for the observed results.
Collapse
Affiliation(s)
- Paul M Alvey
- Department of Chemistry and Biochemistry, The University of Texas at Austin, Texas 78712, United States
| | | | | | | |
Collapse
|
170
|
Colquhoun HM, Zhu Z, Cardin CJ, White AJP, Drew MGB, Gan Y. Bis(hydroxy-isoindolinone)s: Synthesis, Stereochemistry, Polymer Chemistry, and Supramolecular Assembly. Org Lett 2010; 12:3756-9. [DOI: 10.1021/ol101338m] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Howard M. Colquhoun
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.K., and Department of Chemistry, Imperial College, South Kensington, London SW7 2AZ, U.K
| | - Zhixue Zhu
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.K., and Department of Chemistry, Imperial College, South Kensington, London SW7 2AZ, U.K
| | - Christine J. Cardin
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.K., and Department of Chemistry, Imperial College, South Kensington, London SW7 2AZ, U.K
| | - Andrew J. P. White
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.K., and Department of Chemistry, Imperial College, South Kensington, London SW7 2AZ, U.K
| | - Michael G. B. Drew
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.K., and Department of Chemistry, Imperial College, South Kensington, London SW7 2AZ, U.K
| | - Yu Gan
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.K., and Department of Chemistry, Imperial College, South Kensington, London SW7 2AZ, U.K
| |
Collapse
|
171
|
Wheeler SE, McNeil AJ, Müller P, Swager TM, Houk KN. Probing substituent effects in aryl-aryl interactions using stereoselective Diels-Alder cycloadditions. J Am Chem Soc 2010; 132:3304-11. [PMID: 20158182 DOI: 10.1021/ja903653j] [Citation(s) in RCA: 147] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Stereoselective Diels-Alder cycloadditions that probe substituent effects in aryl-aryl sandwich complexes were studied experimentally and theoretically. Computations on model systems demonstrate that the stereoselectivity in these reactions is mediated by differential pi-stacking interactions in competing transition states. This allows relative stacking free energies of substituted and unsubstituted sandwich complexes to be derived from measured product distributions. In contrast to gas-phase computations, dispersion effects do not appear to play a significant role in the substituent effects, in accord with previous experiments. The experimental pi-stacking free energies are shown to correlate well with Hammett sigma(m) constants (r = 0.96). These substituent constants primarily provide a measure of the inductive electron-donating and -withdrawing character of the substituents, not donation into or out of the benzene pi-system. The present experimental results are most readily explained using a recently proposed model of substituent effects in the benzene sandwich dimer in which the pi-system of the substituted benzene is relatively unimportant and substituent effects arise from direct through-space interactions. Specifically, these results are the first experiments to clearly show that OMe enhances these pi-stacking interactions, despite being a pi-electron donor. This is in conflict with popular models in which substituent effects in aryl-aryl interactions are modulated by polarization of the aryl pi-system.
Collapse
Affiliation(s)
- Steven E Wheeler
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, USA
| | | | | | | | | |
Collapse
|
172
|
Ulrich S, Petitjean A, Lehn JM. Metallo-Controlled Dynamic Molecular Tweezers: Design, Synthesis, and Self-Assembly by Metal-Ion Coordination. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.200901262] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
173
|
Takahashi E, Takaya H, Naota T. Dynamic Vapochromic Behaviors of Organic Crystals Based on the Open-Close Motions of S-Shaped Donor-Acceptor Folding Units. Chemistry 2010; 16:4793-802. [DOI: 10.1002/chem.200903403] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
174
|
Gorske BC, Stringer JR, Bastian BL, Fowler SA, Blackwell HE. New strategies for the design of folded peptoids revealed by a survey of noncovalent interactions in model systems. J Am Chem Soc 2010; 131:16555-67. [PMID: 19860427 DOI: 10.1021/ja907184g] [Citation(s) in RCA: 165] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Controlling the equilibria between backbone cis- and trans-amides in peptoids, or N-substituted glycine oligomers, constitutes a significant challenge in the construction of discretely folded peptoid structures. Through the analysis of a set of monomeric peptoid model systems, we have developed new and general strategies for controlling peptoid conformation that utilize local noncovalent interactions to regulate backbone amide rotameric equilibria, including n-->pi*, steric, and hydrogen bonding interactions. The chemical functionalities required to implement these strategies are typically confined to the peptoid side chains, preserve chirality at the side chain N-alpha-carbon known to engender peptoid structure, and are fully compatible with standard peptoid synthesis techniques. Our examinations of peptoid model systems have also elucidated how solvents affect various side chain-backbone interactions, revealing fundamental aspects of these noncovalent interactions in peptoids that were largely uncharacterized previously. As validation of our monomeric model systems, we extended the scope of this study to include peptoid oligomers and have now demonstrated the importance of local steric and n-->pi* interactions in dictating the structures of larger, folded peptoids. This new, modular design strategy has guided the construction of peptoids containing 1-naphthylethyl side chains, which we show can be utilized to effectively eliminate trans-amide rotamers from the peptoid backbone, yielding the most conformationally homogeneous class of peptoid structures yet reported in terms of amide rotamerism. Overall, this research has afforded a valuable and expansive set of design tools for the construction of both discretely folded peptoids and structurally biased peptoid libraries and should shape our understanding of peptoid folding.
Collapse
Affiliation(s)
- Benjamin C Gorske
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706-1322, USA
| | | | | | | | | |
Collapse
|
175
|
Affiliation(s)
- S. G. Ramkumar
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - S. Ramakrishnan
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| |
Collapse
|
176
|
Sarwar MG, Dragisic B, Salsberg LJ, Gouliaras C, Taylor MS. Thermodynamics of Halogen Bonding in Solution: Substituent, Structural, and Solvent Effects. J Am Chem Soc 2010; 132:1646-53. [DOI: 10.1021/ja9086352] [Citation(s) in RCA: 315] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mohammed G. Sarwar
- Department of Chemistry, Lash Miller Chemical Laboratories, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Bojan Dragisic
- Department of Chemistry, Lash Miller Chemical Laboratories, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Lee J. Salsberg
- Department of Chemistry, Lash Miller Chemical Laboratories, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Christina Gouliaras
- Department of Chemistry, Lash Miller Chemical Laboratories, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Mark S. Taylor
- Department of Chemistry, Lash Miller Chemical Laboratories, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| |
Collapse
|
177
|
Sakai N, Mareda J, Vauthey E, Matile S. Core-substituted naphthalenediimides. Chem Commun (Camb) 2010; 46:4225-37. [DOI: 10.1039/c0cc00078g] [Citation(s) in RCA: 454] [Impact Index Per Article: 32.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
178
|
Bell TDM, Bhosale SV, Forsyth CM, Hayne D, Ghiggino KP, Hutchison JA, Jani CH, Langford SJ, Lee MAP, Woodward CP. Melt-induced fluorescent signature in a simple naphthalenediimide. Chem Commun (Camb) 2010; 46:4881-3. [DOI: 10.1039/c0cc00865f] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
179
|
Affiliation(s)
- Swati De
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - S. Ramakrishnan
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| |
Collapse
|
180
|
Tominaga M, Masu H, Azumaya I. Construction and Charge-Transfer Complexation of Adamantane-Based Macrocycles and a Cage with Aromatic Ring Moieties. J Org Chem 2009; 74:8754-60. [DOI: 10.1021/jo9018842] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Masahide Tominaga
- Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, 1314-1 Shido, Sanuki, Kagawa 769-2193, Japan
| | - Hyuma Masu
- Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, 1314-1 Shido, Sanuki, Kagawa 769-2193, Japan
| | - Isao Azumaya
- Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, 1314-1 Shido, Sanuki, Kagawa 769-2193, Japan
| |
Collapse
|
181
|
Mondragón-Vásquez K, Morales-Rojas H. Molecular recognition of cationic phenothiazinium and phenoxazinium dyes with pi-extended 2'-deoxyadenosine nucleotides. Chem Commun (Camb) 2009:6726-8. [PMID: 19885459 DOI: 10.1039/b913315a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
N(6)-(N'-Arylcarbamoyl)-2'-deoxyadenosine-H-phosphonates displayed molecular recognition towards cationic phenothiazinium and phenoxazinium dyes in aqueous solutions; studies have shown that binding is driven mainly by aromatic interactions and that size and shape-complementarity of the aromatic rings in host and guest provides selectivity.
Collapse
Affiliation(s)
- Karina Mondragón-Vásquez
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, C.P. 62209 Cuernavaca, México
| | | |
Collapse
|
182
|
Chong Y, Carroll W, Burns W, Smith M, Shimizu K. A High-Barrier Molecular Balance for Studying Face-to-Face Arene-Arene Interactions in the Solid State and in Solution. Chemistry 2009; 15:9117-26. [DOI: 10.1002/chem.200900479] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
183
|
|
184
|
Blanco V, Gutiérrez A, Platas-Iglesias C, Peinador C, Quintela JM. Expanding the Cavity Size: Preparation of 2:1 Inclusion Complexes Based on Dinuclear Square Metallocycles. J Org Chem 2009; 74:6577-83. [DOI: 10.1021/jo901034c] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Víctor Blanco
- Departamento de Química Fundamental, Facultad de Ciencias, Universidade da Coruña, Campus A Zapateira, 15071, A Coruña, Spain
| | - Albert Gutiérrez
- Departamento de Química Fundamental, Facultad de Ciencias, Universidade da Coruña, Campus A Zapateira, 15071, A Coruña, Spain
| | - Carlos Platas-Iglesias
- Departamento de Química Fundamental, Facultad de Ciencias, Universidade da Coruña, Campus A Zapateira, 15071, A Coruña, Spain
| | - Carlos Peinador
- Departamento de Química Fundamental, Facultad de Ciencias, Universidade da Coruña, Campus A Zapateira, 15071, A Coruña, Spain
| | - José M. Quintela
- Departamento de Química Fundamental, Facultad de Ciencias, Universidade da Coruña, Campus A Zapateira, 15071, A Coruña, Spain
| |
Collapse
|
185
|
Ulrich S, Lehn JM. Adaptation and Optical Signal Generation in a Constitutional Dynamic Network. Chemistry 2009; 15:5640-5. [DOI: 10.1002/chem.200900238] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
186
|
Luk’yanenko NG, Kirichenko TI, Lyapunov AY, Kulygina EY, Mazepa AV. Synthesis, properties, and interaction with paraquat of new fluorenonocrownophanes containing a hydroquinone fragment. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2009. [DOI: 10.1134/s1070428009020249] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
187
|
Nakayama H, Morita T, Kimura S. Dipole effects on molecular and electronic structures in a novel conjugate of oligo(phenyleneethynylene) and helical peptide. Phys Chem Chem Phys 2009; 11:3967-76. [PMID: 19440626 DOI: 10.1039/b817685j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A novel conjugate of a helical nonapeptide and an oligo(phenyleneethynylene) (OPE) having a nitro group at a molecular terminal was synthesized. Both components have a dipole. The peptide has a disulfide group at the N-terminal for immobilization on gold. In order to investigate the electric field effect of the helical peptide dipole on the OPE and molecular structure by the dipole-dipole interaction between the two components, the electronic structure of the OPE was spectroscopically studied in solution, the self-assembled monolayer on gold, and Langmuir-Blodgett (LB) layers on a fused quartz surface. The absorption maximum (lambda(max)) of the OPE component in chloroform is red-shifted by 4 nm from the reference OPE derivative without the helical peptide component. The red shifts of the OPE component are also observed in the LB monolayer and bilayer compared with that of the self-assembled monolayer. The observed dipole effect of the peptide on the OPE electronic structure was quantitatively discussed with ab initio calculations. Antiparallel orientation on the dipole directions of the peptide and the OPE components is considered to explain the red shifts via the dipole effect on the electronic structure of the OPE.
Collapse
Affiliation(s)
- Hidenori Nakayama
- Graduate School of Engineering, Kyoto University, Kyoto-Daigaku-Katsura, Nishikyo-ku, 615-8510, Kyoto, Japan
| | | | | |
Collapse
|
188
|
Liang CK, Wang PS, Leung MK. Oligopyridones: preparation and their folding behavior in polar aprotic solvents. Tetrahedron 2009. [DOI: 10.1016/j.tet.2008.12.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
189
|
Au-Yeung HY, Pengo P, Pantoş GD, Otto S, Sanders JKM. Templated amplification of a naphthalenediimide-based receptor from a donor–acceptor dynamic combinatorial library in water. Chem Commun (Camb) 2009:419-21. [DOI: 10.1039/b816979a] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
190
|
Chen Z, Lohr A, Saha-Möller CR, Würthner F. Self-assembled π-stacks of functional dyes in solution: structural and thermodynamic features. Chem Soc Rev 2009; 38:564-84. [DOI: 10.1039/b809359h] [Citation(s) in RCA: 838] [Impact Index Per Article: 55.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
191
|
Zhao Y. Conformation of Oligocholate Foldamers with 4-Aminobutyroyl Spacers. J Org Chem 2008; 74:834-43. [DOI: 10.1021/jo802201b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yan Zhao
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111
| |
Collapse
|
192
|
|
193
|
Kim UI, Suk JM, Naidu V, Jeong KS. Folding and Anion-Binding Properties of Fluorescent Oligoindole Foldamers. Chemistry 2008; 14:11406-14. [DOI: 10.1002/chem.200801713] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
194
|
Sun H, Zhao Y, Huang Z, Wang Y, Li F. 1H NMR Study on the Self-Association of Quinacridone Derivatives in Solution. J Phys Chem A 2008; 112:11382-90. [DOI: 10.1021/jp804846n] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hui Sun
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, People's Republic of China
| | - Yunfeng Zhao
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, People's Republic of China
| | - Zhaowei Huang
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, People's Republic of China
| | - Yue Wang
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, People's Republic of China
| | - Fei Li
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, People's Republic of China
| |
Collapse
|
195
|
Di Fenza A, Heine A, Koert U, Klebe G. Understanding binding selectivity toward trypsin and factor Xa: the role of aromatic interactions. ChemMedChem 2008; 2:297-308. [PMID: 17191291 DOI: 10.1002/cmdc.200600185] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A congeneric series of four bis-benzamidine inhibitors sharing a dianhydrosugar isosorbide scaffold in common has been studied by crystal structure analysis and enzyme kinetics with respect to their binding to trypsin and factor Xa. Within the series, aromatic interactions are an important determinant for selectivity discrimination among both serine proteases. To study the selectivity-determining features in detail, we used trypsin mutants in which the original binding site is gradually substituted to finally resemble the factor Xa binding pocket. The influence of these mutations has been analyzed on the binding of the closely related inhibitors. We present the crystal structures of the inhibitor complexes obtained by co-crystallizing an "intermediate" trypsin mutant. They could be determined to a resolution of up to 1.2 A, and we measured the inhibitory activity (K(i)) of each ligand against factor Xa, trypsin, and the various mutants. From these data we were able to derive a detailed structure-activity relationship which demonstrates the importance of aromatic interactions in protein-ligand recognition and their role in modulating enzyme selectivity. Pronounced preference is experienced to accommodate the benzamidine anchor with meta topology in the S(1) specificity pocket. One ligand possessing only para topology deviates strongly from the other members of the series and adopts a distinct binding mode addressing the S(1)' site instead of the distal S(3)/S(4) binding pocket.
Collapse
Affiliation(s)
- Armida Di Fenza
- Institute of Pharmaceutical Chemistry, University of Marburg, Marbacher Weg 6, 35032 Marburg, Germany
| | | | | | | |
Collapse
|
196
|
García-Frutos EM, Gómez-Lor B. Synthesis and Self-Association Properties of Functionalized C3-Symmetric Hexakis(p-substituted-phenylethynyl)triindoles. J Am Chem Soc 2008; 130:9173-7. [DOI: 10.1021/ja8025399] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eva M. García-Frutos
- Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain
| | - Berta Gómez-Lor
- Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain
| |
Collapse
|
197
|
Bhosale SV, Bissett MA, Forsyth C, Langford SJ, Neville SM, Shapter JG, Weeks L, Woodward CP. Designing functionalized porphyrins capable of pseudo-2D self-assembly on surfaces. Org Lett 2008; 10:2943-6. [PMID: 18557627 DOI: 10.1021/ol800895q] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A crystallography-instructed strategy to highly ordered layering of porphyrins with different topologies on HOPG is developed based on meso-tetraarylporphyrins bearing 2-ethoxyethanol side chains as "sticky ends". These sticky ends are capable of displaying directive hydrogen bonding motifs with the inherent D4h symmetry of the porphyrins. Solvent effects are shown to have an important role in fabricating the adsorption. Metalation and subsequent axial ligation was a key controlling factor in the topology of the layer, leading to pseudo-2D structures on HOPG.
Collapse
|
198
|
Rasberry RD, Smith MD, Shimizu KD. Origins of Selectivity in a Colorimetric Charge-Transfer Sensor for Diols. Org Lett 2008; 10:2889-92. [DOI: 10.1021/ol801089e] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Roger D. Rasberry
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208
| | - Mark D. Smith
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208
| | - Ken D. Shimizu
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208
| |
Collapse
|
199
|
Caldwell ST, Cooke G, Hewage SG, Mabruk S, Rabani G, Rotello V, Smith BO, Subramani C, Woisel P. Model systems for flavoenzyme activity: intramolecular self-assembly of a flavin derivative via hydrogen bonding and aromatic interactions. Chem Commun (Camb) 2008:4126-8. [DOI: 10.1039/b809762c] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
200
|
Mondal P, Karmakar A, Singh WM, Baruah JB. Crystal packing in some flexible carboxylic acids and esters attached to a naphthalene ring. CrystEngComm 2008. [DOI: 10.1039/b808399a] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|