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Lauzon S, Schouwey L, Ollevier T. C2-Symmetric 2,2'-Bipyridine-α,α'-1-adamantyl-diol Ligand: Bulky Iron Complexes in Asymmetric Catalysis. Org Lett 2022; 24:1116-1120. [PMID: 35080897 DOI: 10.1021/acs.orglett.2c00141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis of a chiral 2,2'-bipyridine-α,α'-1-adamantyl-diol ligand was achieved starting from commercially available materials. The bulky ligand was synthesized in three steps in 40% overall yield with stereoselectivities of 98% de and >99.5% ee for the S,S enantiomer. The absolute configuration of and structural insights into a heptacoordinated 2,2'-bipyridine-α,α'-1-Ad-diol/FeII chiral complex were obtained from single-crystal diffraction analyses. The newly synthesized ligand was used in iron-catalyzed asymmetric Mukaiyama aldol, thia-Michael, and Diels-Alder reactions.
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Affiliation(s)
- Samuel Lauzon
- Département de chimie, Université Laval, 1045 avenue de la Médecine, Québec, QC G1V 0A6, Canada
| | - Lionel Schouwey
- Département de chimie, Université Laval, 1045 avenue de la Médecine, Québec, QC G1V 0A6, Canada
| | - Thierry Ollevier
- Département de chimie, Université Laval, 1045 avenue de la Médecine, Québec, QC G1V 0A6, Canada
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2
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Nakakoji T, Yoshino K, Izutsu K, Sato H, Miyake H, Mieda E, Shinoda S, Tsukube H, Kawasaki H, Arakawa R, Ono D, Shizuma M. Enantioselectivity-Evaluation of Chiral Copper(II) Complexes Coordinated by Novel Chiral Tetradentate Ligands for Free Amino Acids by Mass Spectrometry Coupled With the Isotopically Labeled Enantiomer Method. Front Chem 2021; 8:598598. [PMID: 33425855 PMCID: PMC7793834 DOI: 10.3389/fchem.2020.598598] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 10/31/2020] [Indexed: 11/13/2022] Open
Abstract
A series of copper(II) complexes with chiral tetradentate ligands, N,N′-ethylene- bis(S-amino acid methyl amide or methyl ester) prepared from S-alanine, S-phenylalanine, S-valine or S-proline, was generated in methanol. The copper complexes provided three component complexes in the presence of a free chiral amino acid. The enantioselectivity for the amino acid was evaluated by electrospray ionization-mass spectrometry coupled with the deuterium-labeled enantiomer method and these copper complexes were found to exhibit high enantioselectivity for free amino acids having bulky side chains. This result suggests that steric interaction between the tetradentate ligand and free amino acid was a major factor in chiral recognition. The copper complex with a chiral tetradentate ligand prepared from S-proline showed opposite enantioselectivity to copper complexes consisting of tetradentate ligands prepared from other S-amino acids. The conformational difference of the tetradentate ligand in the copper complex was found to be significant for enantioselectivity.
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Affiliation(s)
- Takashi Nakakoji
- Department of Chemistry, Graduate School of Science, Osaka City University, Osaka, Japan
| | - Kaori Yoshino
- Department of Chemistry, Graduate School of Science, Osaka City University, Osaka, Japan
| | - Kazuki Izutsu
- Department of Chemistry, Graduate School of Science, Osaka City University, Osaka, Japan
| | - Hirofumi Sato
- Osaka Research Institute of Industrial Science and Technology, Osaka, Japan
| | - Hiroyuki Miyake
- Department of Chemistry, Graduate School of Science, Osaka City University, Osaka, Japan
| | - Eiko Mieda
- Department of Chemistry, Graduate School of Science, Osaka City University, Osaka, Japan
| | - Satoshi Shinoda
- Department of Chemistry, Graduate School of Science, Osaka City University, Osaka, Japan
| | - Hiroshi Tsukube
- Department of Chemistry, Graduate School of Science, Osaka City University, Osaka, Japan
| | - Hideya Kawasaki
- Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Japan
| | - Ryuichi Arakawa
- Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Japan
| | - Daisuke Ono
- Osaka Research Institute of Industrial Science and Technology, Osaka, Japan
| | - Motohiro Shizuma
- Osaka Research Institute of Industrial Science and Technology, Osaka, Japan
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3
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Coley CW, Eyke NS, Jensen KF. Autonomous Discovery in the Chemical Sciences Part I: Progress. Angew Chem Int Ed Engl 2020; 59:22858-22893. [DOI: 10.1002/anie.201909987] [Citation(s) in RCA: 100] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Indexed: 01/05/2023]
Affiliation(s)
- Connor W. Coley
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Natalie S. Eyke
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Klavs F. Jensen
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
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4
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Coley CW, Eyke NS, Jensen KF. Autonome Entdeckung in den chemischen Wissenschaften, Teil I: Fortschritt. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201909987] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Connor W. Coley
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Natalie S. Eyke
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Klavs F. Jensen
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
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5
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Pontiki E, Hadjipavlou-Litina D. QSAR models on H4 receptor antagonists associated with inflammation and anaphylaxis. J Biomol Struct Dyn 2016; 35:968-1005. [DOI: 10.1080/07391102.2016.1166986] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Eleni Pontiki
- Department of Pharmaceutical Chemistry, School of Pharmacy, Aristotle University of Thessaloniki , Thessaloniki 54124, Greece
| | - Dimitra Hadjipavlou-Litina
- Department of Pharmaceutical Chemistry, School of Pharmacy, Aristotle University of Thessaloniki , Thessaloniki 54124, Greece
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6
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Hellmann G, Hack A, Thiemermann E, Luche O, Raabe G, Gais HJ. Chiral Fluorinated α-Sulfonyl Carbanions: Enantioselective Synthesis and Electrophilic Capture, Racemization Dynamics, and Structure. Chemistry 2013; 19:3869-97. [DOI: 10.1002/chem.201204014] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Indexed: 11/06/2022]
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7
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Pinter B, Fievez T, Bickelhaupt FM, Geerlings P, De Proft F. On the origin of the steric effect. Phys Chem Chem Phys 2012; 14:9846-54. [DOI: 10.1039/c2cp41090g] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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8
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Meyer MP. Nonbonding Interactions and Stereoselection in the Corey−Bakshi−Shibata Reduction. Org Lett 2009; 11:4338-41. [DOI: 10.1021/ol901707h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthew P. Meyer
- University of California, Merced, School of Natural Sciences, P.O. Box 2039, Merced, California 95344
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9
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Galkin VI, Sayakhov RD, Cherkasov RA. Steric effects: the problem of their quantitative assessment and manifestation in the reactivity of hetero-organic compounds. RUSSIAN CHEMICAL REVIEWS 2007. [DOI: 10.1070/rc1991v060n08abeh001113] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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10
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Böhm S, Exner O. Steric effects of the alkyl groups: evaluation on isolated molecules by means of isodesmic reactions. Org Biomol Chem 2007; 5:2081-6. [PMID: 17581651 DOI: 10.1039/b704459c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Several possible scales of steric effects of the alkyl groups were suggested on the basis of isodesmic model reactions, in which a sterically crowded compound is formally synthesized from simpler derivatives. The reaction energies were calculated within the framework of the density functional theory at the level B3LYP/6-311+G(d.p)//B3LYP/6-311+G(d.p) for 6 model systems and 7 various alkyl groups. The most important systems were cis-1,2-dialkylcyclopropanes 1 synthesized from two mono derivatives and sterically crowded derivatives of bicyclo[2.2.2]octane 2 with C(3) symmetry. The scales of steric effects evaluated from the two models were rather different: the first scale depended in effect only on the C atoms in the alpha and beta positions and the effects were almost equal for all primary alkyls. The second scale depended also on the gamma position and the effect of the CH(2)-t-Bu group was much greater than that of the ethyl group. Any relationship between various systems was found rarely, only in the case of very similar reaction series; even in such cases the relationship was sometimes linear, sometimes distinctly curvilinear. It is concluded that any universal scale of steric effects is in principle not possible since these effects depend specifically on the surroundings of the substituent in a particular reaction. Nevertheless, there is a similarity between various scales; a bulky group appears as bulky in any scale. Therefore, very rough correlations of steric effects are possible.
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Affiliation(s)
- Stanislav Böhm
- Department of Organic Chemistry, Institute of Chemical Technology, CZ-16628 Praha 6, Czech Republic
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11
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Yamagami C, Akamatsu M, Motohashi N, Hamada S, Tanahashi T. Quantitative structure-activity relationship studies for antioxidant hydroxybenzalacetones by quantum chemical- and 3-D-QSAR(CoMFA) analyses. Bioorg Med Chem Lett 2005; 15:2845-50. [PMID: 15911266 DOI: 10.1016/j.bmcl.2005.03.087] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2005] [Revised: 03/19/2005] [Accepted: 03/23/2005] [Indexed: 11/17/2022]
Abstract
Antioxidant activities for a series of hydroxybenzalacetones, OH-BZ, evaluated by their inhibitory potencies against lipid peroxidation induced by gamma-ray irradiation or t-BuOOH, were analyzed quantitatively using quantum-chemical parameters calculated by semi-empirical molecular orbital (MO) calculations. The energy of the highest occupied molecular orbital (E(HOMO)) and frontier electron densities (HOMO) on the phenolic oxygen atom (F(H,O)), together with the steric parameter (E(s)) for the substituent ortho to the phenolic oxygen, showed excellent correlations. We also performed 3D-QSAR studies by using the comparative molecular field analysis (CoMFA) model. The results were compared with the corresponding classical QSAR correlations.
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Affiliation(s)
- Chisako Yamagami
- Kobe Pharmaceutical University, Motoyamakita-machi, Higashinadaku, Japan.
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12
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14
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Yamagami C, Motohashi N, Emoto T, Hamasaki A, Tanahashi T, Nagakura N, Takeuchi Y. Quantitative structure–activity relationship analyses of antioxidant and free radical scavenging activities for hydroxybenzalacetones. Bioorg Med Chem Lett 2004; 14:5629-33. [PMID: 15482937 DOI: 10.1016/j.bmcl.2004.08.052] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2004] [Revised: 08/22/2004] [Accepted: 08/23/2004] [Indexed: 11/17/2022]
Abstract
Antioxidant activities for a series of hydroxybenzalacetones, OH-BZ, were evaluated by measuring inhibitory potencies of OH-BZ against lipid peroxidation induced by t-BuOOH or gamma-irradiation. Their quantitative structure-activity relationship (QSAR) studies indicated that the activities are mainly governed by electronic and steric factors. To rationalize these results, we also performed QSAR analyses for DPPH radical scavenging activities of OH-BZ, which indicated that antioxidant and radical scavenging activities could be expressed by the same physicochemical parameters but the hydrogen bonding behavior of phenolic OH varies with the reaction medium.
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Affiliation(s)
- Chisako Yamagami
- Kobe Pharmaceutical University, Motoyamakita-machi, Higashinadaku, Kobe 658-8558, Japan.
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15
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Sezer Ö, Anaç O. Diazoaldehyde Chemistry. Part 1. Transdiazotization of Acylacetaldehydes in Neutral-to-Acidic Medium. A Direct Approach to the Synthesis of α-Diazo-β-oxoaldehydes. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19940770819] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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16
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Mulzer J, Brüntrup G, Chucholowski A. Competition in the Three-Component System Triphenylphosphane/Azo Ester/3-Hydroxy-Carboxylic Acid: OHversusCOOH-Activation. ACTA ACUST UNITED AC 2003. [DOI: 10.1002/anie.197906221] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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17
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Evaluation of the substituent effect by using activation parameters and isokinetic relationships: an attempt to provide experimental primary standard for comparison with quantum chemically computed results in the field of structure–reactivity relationships. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s0166-1280(02)00398-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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18
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Zhang X, Minear RA. Decomposition of trihaloacetic acids and formation of the corresponding trihalomethanes in drinking water. WATER RESEARCH 2002; 36:3665-3673. [PMID: 12230213 DOI: 10.1016/s0043-1354(02)00072-6] [Citation(s) in RCA: 113] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The decomposition of trihaloacetic acids [bromodichloroacetic acid (BDCAA), dibromochloroacetic acid (DBCAA), tribromoacetic acid (TBAA)], and the formation of the corresponding trihalomethanes [bromodichloromethane (BDCM), dibromochloromethane (DBCM), tribromomethane (TBM)] were studied. Like TBAA, the two mixed chlorobromo-species, BDCAA and DBCAA, were found to decompose to form BDCM and DBCM, respectively, via a decarboxylation pathway. The decomposition of BDCAA, DBCAA and TBAA in water at neutral pH follows a first-order reaction, with rate constants of 0.0011, 0.0062 and 0.040 day(-1) at 23 degrees C, respectively; and 0.000028, 0.00014 and 0.0016 day(-1) at 4 degrees C, respectively. The activation energies for the decomposition reaction of BDCAA, DBCAA and TBAA in water at neutral pH were found to be 35.0, 34.5 and 29.2 kcal/mol, respectively. The effect of pH in the range of 6-9 and the effect of a drinking water matrix on the decomposition of BDCAA, DBCAA, and TBAA in water were found to be insignificant. Measurement and health implications due to decomposition of trihaloacetic acids and formation of the corresponding trihalomethanes were discussed. By applying the technique of quantitative structure-activity relationships (QSAR), the decomposition rate constants of six iodinated trihaloacetic acids were estimated.
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Affiliation(s)
- Xiangru Zhang
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana 61801, USA.
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19
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The prediction of density. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s1874-527x(02)80005-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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20
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Kilway KV, Siegel JS. Control of functional group proximity and direction by conformational networks: synthesis and stereodynamics of persubstituted arenes. Tetrahedron 2001. [DOI: 10.1016/s0040-4020(01)00248-4] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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21
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Ferguson JD, Holmes BE. Substituent effects on the disproportionation?combination rate constant ratios for gas-phase halocarbon radicals, Part 5: Reactions of CF3 + CF3CH2CHCH3 and CF3CH2CHCH3 + CF3CH2CHCH3. INT J CHEM KINET 2001. [DOI: 10.1002/kin.1050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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22
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Denton P. A Structure-Activity Relationship for the Hydrolysis of Acetylamino Acids by Porcine Aminoacylase. Bioorg Chem 2000; 28:205-213. [PMID: 11034782 DOI: 10.1006/bioo.2000.1177] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A structure-activity relationship is presented that satisfactorily predicts the rates of hydrolysis of a series of acetylglycine derivatives by porcine aminoacylase. It is apparent that the substrate specificity of aminoacylase is mainly kinetic in origin, the observed correlation with Taft's E(s) parameter supporting the notion that enzymolysis proceeds through a mechanism that is analogous to chemical hydrolysis. It is suggested that the alpha-CH(2)CH group of those substrates that possess this moiety is conformationally immobile upon binding. This lock facilitates rapid hydrolysis and results from steric interactions between the enzyme and substrate. The incorporation of alpha-methyl amino acid derivatives in the structure-activity relationship is consistent with a flexible active site model and it is concluded that the alpha-methyl effect in this system is a binding phenomenon. It is evident that the active center of porcine aminoacylase can comfortably accommodate amino acid derivatives with side chains containing less than six carbon atoms, contrary to previous assertions. It is suggested that the binding of bulkier derivatives necessitates the distortion of the active site. Derivatives possessing beta-hydroxyl groups are found to deviate from expected behavior and a nonproductive binding model is presented. Copyright 2000 Academic Press.
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Affiliation(s)
- P Denton
- School of Pharmacy and Chemistry, Liverpool John Moores University, Liverpool, L3 3AF, United Kingdom
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23
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Gais HJ, van Gumpel M, Raabe G, Müller J, Braun S, Lindner HJ, Rohs S, Runsink J. Sulfonyl-Stabilized Allylic Norbornenyl and Norbornyl Carbanions: Structure and Stereoselectivity of Reaction with Electrophiles. European J Org Chem 1999. [DOI: 10.1002/(sici)1099-0690(199907)1999:7<1627::aid-ejoc1627>3.0.co;2-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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24
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Heilmann SM, Moren DM, Krepski LR, Pathre SV, Rasmussen JK, Stevens J. The chemistry of 2-alkenyl-5(4H)-oxazolones. VIII acid-catalyzed reaction with alcohols. Tetrahedron 1998. [DOI: 10.1016/s0040-4020(98)00751-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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25
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Bordwell FG, Liu WZ. Effects of sulfenyl, sulfinyl and sulfonyl groups on acidities and homolytic bond dissociation energies of adjacent C?H and N?H bonds. J PHYS ORG CHEM 1998. [DOI: 10.1002/(sici)1099-1395(199806)11:6<397::aid-poc10>3.0.co;2-b] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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26
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Hirashima A, Tomita J, Pan C, Taniguchi E, Eto M. Quantitative structure-activity studies of octopaminergic 2-(arylimino)thiazolidines and oxazolidines against the nervous system of Periplaneta americana L. Bioorg Med Chem 1997; 5:2121-8. [PMID: 9459009 DOI: 10.1016/s0968-0896(97)00136-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The quantitative structure-activity relationship (QSAR) of octopaminergic 2-(arylimino)thiazolidines (AITs) and 2-(arylimino)oxazolidines (AIOs) against the thoracic nerve cord of the American cockroach, Periplaneta americana L., was analysed using reported physicochemical parameters and regression analysis. The more electron-donating, the less bulky at m-position, and the more hydrophobic the substituent, the greater the activity. The plots of observed log Vmax values against calculated log Vmax values having substituents on the m-position deviated downwards from those of compounds having substituents at the 0- and/or p-positions. The more hydrophobic and the more electron-withdrawing the substituent, the greater the activity. AIO with a 2, 3, 4-trichlorophenyl group (58) was more active than its thiazolidine derivative, 2-(2,3,4-trichlorophenylimino)thiazolidine (38) in terms of Vmax:Vmax of 58 was 30% relative to octopamine (OA), whereas that of 38 has been 9% relative to OA, respectively. Superimposition of energy-minimized OA and 58 revealed structural and conformational similarities that might account for the high activity of 58.
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Affiliation(s)
- A Hirashima
- Department of Agricultural Chemistry, Kyushu University, Fukuoka, Japan
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Ramos-Nino M, Ramirez-Rodriguez C, Clifford M, Adams M. A comparison of quantitative structure-activity relationships for the effect of benzoic and cinnamic acids on Listeria monocytogenes using multiple linear regression, artificial neural network and fuzzy systems. J Appl Microbiol 1997. [DOI: 10.1111/j.1365-2672.1997.tb02847.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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28
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Ramos-Nino M, Ramirez-Rodriguez C, Clifford M, Adams M. A comparison of quantitative structure-activity relationships for the effect of benzoic and cinnamic acids on Listeria monocytogenes using multiple linear regression, artificial neural network and fuzzy systems. J Appl Microbiol 1997. [DOI: 10.1111/j.1365-2672.1997.tb03569.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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29
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Derrick SD, Boehme R, Wong KM, Nemeth F, Tanaka K, Rumberg B, Beekman RA, Dibble PW. Steric and electronic effects in imine-hemiaminal ring-chain tautomerism. Tetrahedron 1996. [DOI: 10.1016/s0040-4020(96)00352-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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30
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Ramos-Nino ME, Clifford MN, Adams MR. Quantitative structure activity relationship for the effect of benzoic acids, cinnamic acids and benzaldehydes on Listeria monocytogenes. THE JOURNAL OF APPLIED BACTERIOLOGY 1996; 80:303-10. [PMID: 8852677 DOI: 10.1111/j.1365-2672.1996.tb03224.x] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The inhibition of a cocktail of 18 strains of Listeria monocytogenes by 24 mono-, di- and tri-substituted benzoic and cinnamic acids and 16 benzaldehydes was evaluated using the concentration (C) required to give a 50% growth inhibition under anaerobic conditions at 35 degree C and pH 6.2 as a measure of biological activity (BAV). Using the method of least squares, multiple regression equations were obtained which described the contribution of some physiochemical and other structural properties of the compounds to their biological activity. The equation that best described the activity of benzoic and cinnamic acids was [formula: see text] where K is a lipophilicity parameter determined by RP-HPLC and the effect of ionization is represented by pKa. Benzaldehydes behaved differently, their activity being best described by the equation. [formula: see text] where the activity is controlled by a steric parameter, the van der Waals volume (Vw), and an electronic-steric parameter for ortho substituents. Absence of a lipophilicity parameter indicates that partitioning into the cell membrane might not be required for antimicrobial activity. The models were tested in several food systems which showed that in food with a high protein or lipid content antilisterial activity was much lower than predicted, making the models unacceptable in such circumstances.
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31
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Kato M, Nishino S, Ohno M, Fukuyama S, Kita Y, Hirasawa Y, Nakanishi I, Takasugi H, Sakane K. New reagents for controlled release of nitric oxide. Structure-stability relationships. Bioorg Med Chem Lett 1996. [DOI: 10.1016/0960-894x(95)00547-7] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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32
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About the “physiological size” of fluorine substituents: Comparison of sensorially active compounds with fluorine and methyl substituted analogues. Tetrahedron 1996. [DOI: 10.1016/0040-4020(95)00886-d] [Citation(s) in RCA: 103] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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33
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Brown KL, Evans DR. Heteronuclear NMR studies of cobalt corrinoids—17. characterization of neopentylcobinamide and neopentyl-13-epicobinamide by 1H and 13C NMR spectroscopy: Inferred corrin ring conformations from chemical shift differentials. Polyhedron 1995. [DOI: 10.1016/0277-5387(95)00123-a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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34
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Tanii H, Zhang XP, Ohyashiki T. In vitro influences of alcohols on mouse synaptosomes, and structure-activity relationships. Arch Toxicol 1995; 69:617-23. [PMID: 8660139 DOI: 10.1007/s002040050222] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Little information is available on the structure-central nervous system membrane toxicity relationship of alcohols. The purpose of the present study was to study in vitro influence of alcohols (n = 20) on the activity of the toxic indicator Na+/K(+)-adenosine triphosphatase (Na+/K(+)-ATPase) and acetylcholinesterase (AchE), and membrane fluidity in mouse brain synaptosomes, in terms of the structure-activity relationship. The potency of inhibition for the enzymes (IC50) and the potency of increasing membrane fluidity (IC12.5) were determined experimentally, and n-octanol/water partition coefficient (P) and the steric constant Taft Es are cited from the literature. Regression analysis revealed that log 1/IC50 for Na+/K(+)-ATPase is a function of log P and Taft Es. The situation was true for AchE activity. The results indicate that the hydrophobicity expressed as log P and the steric effect of the alcohols play an important role in inhibiting both enzyme activities. A linear relationship between log 1/IC12.5 for membrane fluidity and log P is shown, indicating a significant effect of the alcohols on membrane fluidity. Based on these results, it is suggested that the alcohols inhibit the Na+/K(+)-ATPase and AchE activity through a direct action on the enzymes and/or through changing the membrane fluidity.
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Affiliation(s)
- H Tanii
- Department of Hygiene, School of Medicine, Kanazawa University, Japan
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35
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Jenkins HDB, Samuel CJ, Stafford JE. A novel computational approach to the estimation of steric parameters II. Extension to thiazoles. Tetrahedron Lett 1995. [DOI: 10.1016/0040-4039(95)01168-h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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36
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Jenkins HDB, Kelly EJ, Samuel CJ. A novel computational approach to the estimation of steric parameters application to the Menschutkin reaction. Tetrahedron Lett 1994. [DOI: 10.1016/s0040-4039(00)78268-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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37
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Affiliation(s)
- C Hansch
- Department of Chemistry, Pomona College, Claremont, California 91711
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38
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Substituent effect analysis in organocobalt corrinoids: binding constants for cyanide, azide and the pendent 5,6-dimethylbenzimidazole nucleotide. Inorganica Chim Acta 1992. [DOI: 10.1016/s0020-1693(00)85011-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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39
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40
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Baldwin JE, Adlington RM, Ramcharitar SH. Intramolecular palladium-catalysed cross coupling; a direct route to γ-Oxo-α,β-unsaturated macrocycles. Tetrahedron 1992. [DOI: 10.1016/s0040-4020(01)90977-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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41
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Shimizu N, Osajima E, Tsuno Y. Rates and Mechanism for the Solvolyses of 2,2-Dimethyl-2-sila-1-indanyl Bromide and α-Trialkylsilylbenzylp-Toluenesulfonates. α-Silicon Effect on the Stability of Benzylic Cations in Solution. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1991. [DOI: 10.1246/bcsj.64.1145] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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42
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Sirokmán G, Lukács F, Molnár Á, Bartók M. Transformation of compounds containing c-n bonds on heterogeneous catalysts-7. The stereochemistry of the dehydrogenation of 2-alkyl-3-dimethylamino-1-phenylpropan-1-ols. Tetrahedron 1990. [DOI: 10.1016/s0040-4020(01)87841-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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43
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Abstract
We have presented computational approaches that can be used for the relatively rapid identification of suspect toxigens, including carcinogens, in two different classes of compounds: (a) halogenated olefins and epoxides, and (b) substituted dibenzo-p-dioxins. A common element in these approaches is the key role played by the molecular electrostatic potential. It is applied in two different ways, however; it is used to assess the reactivity of a specific site in the case of the epoxides, and for the dibenzo-p-dioxins the focus is on the overall pattern of negative regions above the molecular plane. While we are continuing to develop and refine both types of analysis, especially that related to the dibenzo-p-dioxins, the results obtained so far are encouraging, and indicate that these can be regarded as useful screening techniques for identifying compounds that require further and more exhaustive investigation.
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Affiliation(s)
- P Politzer
- Department of Chemistry, University of New Orleans Lakefront, LA 70148
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44
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Yuan C, Li S, Liao X. STUDIES ON ORGANOPHOSPHORUS COMPOUNDS XXXI. ALKALINE HYDROLYSIS OF 2-ALKYL-2-OXO-1,3,2-DIOXA-PHOSPHORINANE AND -PHOSPHEPANE. ACTA ACUST UNITED AC 1988. [DOI: 10.1080/03086648808079039] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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45
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Glemarec C, Wu JC, Remaud G, Bazin H, Oivanen M, Lönnberg H, Chattopadhyaya J. Structure and reactivity of wyosine (y-nucleoside) and its derivatives. Chemical, kinetic and spectroscopic studies. Tetrahedron 1988. [DOI: 10.1016/s0040-4020(01)85908-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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46
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Brown KL, Jang GW, Segal R, Rajeshwar K. Thermolysis of alkyl(aquo)- and alkyl(pyridine)cobaloximes in the solid state. Influence of the alkyl group on axial cobalt-ligand bond stability and correlation with solution properties. Inorganica Chim Acta 1987. [DOI: 10.1016/s0020-1693(00)86546-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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47
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Descriptions of molecular shape applied in studies of structure/activity and structure/property relationships. Anal Chim Acta 1987. [DOI: 10.1016/s0003-2670(00)82801-9] [Citation(s) in RCA: 174] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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48
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Oshima T, Nagai T. Structural Effects in the Reactions of Diazoalkanes with 2,3-Dichloro-5,6-dicyanobenzoquinone. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1986. [DOI: 10.1246/bcsj.59.3865] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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49
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Pascal RA, Oliver MA, Chen YC. Alternate substrates and inhibitors of bacterial 4-hydroxyphenylpyruvate dioxygenase. Biochemistry 1985; 24:3158-65. [PMID: 4027238 DOI: 10.1021/bi00334a013] [Citation(s) in RCA: 37] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A variety of analogues of (4-hydroxyphenyl)pyruvic acid were synthesized, and the reactions of these compounds with the 4-hydroxyphenylpyruvate dioxygenase from Pseudomonas sp. P.J. 874 were examined. Several of the ring-substituted substrate analogues are reversible inhibitors of the enzyme, the most potent being the competitive inhibitor (2,6-difluoro-4-hydroxyphenyl) pyruvate (Ki = 1.3 microM). Two substrate analogues (2-fluoro-4-hydroxyphenyl)pyruvate and [(4-hydroxyphenyl)thio]pyruvate proved to be alternate substrates for the enzyme. The former compound is converted to (3-fluoro-2,5-dihydroxyphenyl)acetate in an essentially normal catalytic sequence including oxidative decarboxylation, ring hydroxylation, and side-chain migration. The latter compound, however, undergoes oxidative decarboxylation and sulfoxidation to give [(4-hydroxyphenyl)sulfinyl]acetate; ring oxidation is not observed. The implications of these results with regard to the catalytic mechanism of 4-hydroxyphenylpyruvate dioxygenase are discussed.
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50
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Carotti A, Smith RN, Wong S, Hansch C, Blaney JM, Langridge R. Papain hydrolysis of X-phenyl-N-methanesulfonyl glycinates: a quantitative structure-activity relationship and molecular graphics analysis. Arch Biochem Biophys 1984; 229:112-25. [PMID: 6703690 DOI: 10.1016/0003-9861(84)90136-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The hydrolysis of 32 X-phenyl-N-methanesulfonyl glycinates by papain was investigated. It was found that the variation in the Michaelis constants could be rationalized by the following correlation equation: log 1/Km = 0.61 pi '3 + 0.46 MR4 + 0.55 sigma + 2.00 with a correlation coefficient of 0.945. In this expression, pi '3 is the hydrophobic constant for the more lipophilic of the two possible meta substituents, MR4 is the molar refractivity of 4-substituents, and sigma is the Hammett constant summed for all substituents. Using this equation, we designed, synthesized, and successfully predicted Km for a new congener intended to maximize binding (1/Km). The interactions involved in enzyme-substrate binding, as characterized by the correlation equation, are interpreted using a computer-constructed color three-dimensional-graphics molecular model of the enzyme active site. The nonenzymatic hydrolysis (both acid and basic) of phenyl hippurates yield rate constants which are well correlated by Hammett equations; however, log k for both acid and alkaline hydrolysis are not linearly related to log 1/Km or log kcat/Km.
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