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Koudelka J, Tobrman T. Synthesis of 2‐Substituted Cyclobutanones by a Suzuki Reaction and Dephosphorylation Sequence. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100464] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jakub Koudelka
- Department of Organic Chemistry University of Chemistry and Technology, Prague Technická 5 166 28 Prague 6 Czech Republic
| | - Tomáš Tobrman
- Department of Organic Chemistry University of Chemistry and Technology, Prague Technická 5 166 28 Prague 6 Czech Republic
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2
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Quiclet-Sire B, Zard SZ. On the Strategic Impact of the Degenerative Transfer of Xanthates on Synthetic Planning. Isr J Chem 2016. [DOI: 10.1002/ijch.201600094] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Béatrice Quiclet-Sire
- Laboratoire de Synthèse Organique associé au CNRS; Ecole Polytechnique, F-; 91128 Palaiseau Cedex France
| | - Samir Z. Zard
- Laboratoire de Synthèse Organique associé au CNRS; Ecole Polytechnique, F-; 91128 Palaiseau Cedex France
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3
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Guardingo M, Bellido E, Miralles-Llumà R, Faraudo J, Sedó J, Tatay S, Verdaguer A, Busqué F, Ruiz-Molina D. Bioinspired catechol-terminated self-assembled monolayers with enhanced adhesion properties. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:1594-1656. [PMID: 24851249 DOI: 10.1002/smll.201302406] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The role of the catechol moiety in the adhesive properties of mussel proteins and related synthetic materials has been extensively studied in the last years but still remains elusive. Here, a simplified model approach is presented based on a self-assembled monolayer (SAM) of upward-facing catechols thiol-bound to epitaxial gold substrates. The orientation of the catechol moieties is confirmed by spectroscopy, which also showed lack of significant amounts of interfering o-quinones. Local force-distance curves on the SAM measured by atomic force microscopy (AFM) shows an average adhesion force of 45 nN, stronger than that of a reference polydopamine coating, along with higher reproducibility and less statistical dispersion. This is attributed to the superior chemical and topographical homogeneity of the SAM coating. Catechol-terminated SAMs are also obtained on high-roughness gold substrates that show the ability to assemble magnetic nanoparticles, despite their lack of enhanced adhesion at the molecular level. Finally, the influence of the catechol group on the formation and quality of the SAM is explored both theoretically (molecular dynamics simulations) and experimentally using direct-write AFM lithography.
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4
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Shu L, Wang P, Radinov R, Dominique R, Wright J, Alabanza LM, Dong Y. Process Research on a Phenoxybutyric Acid LTB4 Receptor Antagonist. Efficient Kilogram-Scale Synthesis of a 3,5-Bisarylphenol Core. Org Process Res Dev 2012. [DOI: 10.1021/op300302s] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lianhe Shu
- Process Research
and Synthesis, ‡Discovery Chemistry, Pharma Research and Early Development
(pRED), Hoffmann-La Roche Inc., 340 Kingsland
Street, Nutley, New Jersey 07110, United States
| | - Ping Wang
- Process Research
and Synthesis, ‡Discovery Chemistry, Pharma Research and Early Development
(pRED), Hoffmann-La Roche Inc., 340 Kingsland
Street, Nutley, New Jersey 07110, United States
| | - Roumen Radinov
- Process Research
and Synthesis, ‡Discovery Chemistry, Pharma Research and Early Development
(pRED), Hoffmann-La Roche Inc., 340 Kingsland
Street, Nutley, New Jersey 07110, United States
| | - Romyr Dominique
- Process Research
and Synthesis, ‡Discovery Chemistry, Pharma Research and Early Development
(pRED), Hoffmann-La Roche Inc., 340 Kingsland
Street, Nutley, New Jersey 07110, United States
| | - James Wright
- Process Research
and Synthesis, ‡Discovery Chemistry, Pharma Research and Early Development
(pRED), Hoffmann-La Roche Inc., 340 Kingsland
Street, Nutley, New Jersey 07110, United States
| | - Lady Mae Alabanza
- Process Research
and Synthesis, ‡Discovery Chemistry, Pharma Research and Early Development
(pRED), Hoffmann-La Roche Inc., 340 Kingsland
Street, Nutley, New Jersey 07110, United States
| | - Yan Dong
- Process Research
and Synthesis, ‡Discovery Chemistry, Pharma Research and Early Development
(pRED), Hoffmann-La Roche Inc., 340 Kingsland
Street, Nutley, New Jersey 07110, United States
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5
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Crews C, Driffield M, Thomas C. Analysis of 2-alkylcyclobutanones for detection of food irradiation: Current status, needs and prospects. J Food Compost Anal 2012. [DOI: 10.1016/j.jfca.2011.11.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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6
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Effect of gamma-ray irradiation on the fatty acid profile of irradiated beef meat. Food Chem 2011; 127:461-6. [DOI: 10.1016/j.foodchem.2010.12.155] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2010] [Revised: 10/26/2010] [Accepted: 12/31/2010] [Indexed: 11/24/2022]
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7
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Hartwig A, Pelzer A, Burnouf D, Titéca H, Delincée H, Briviba K, Soika C, Hodapp C, Raul F, Miesch M, Werner D, Horvatovich P, Marchioni E. Toxicological potential of 2-alkylcyclobutanones – specific radiolytic products in irradiated fat-containing food – in bacteria and human cell lines. Food Chem Toxicol 2007; 45:2581-91. [PMID: 17766022 DOI: 10.1016/j.fct.2007.05.033] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2006] [Accepted: 05/31/2007] [Indexed: 11/22/2022]
Abstract
Food irradiation has been considered as a safe processing technology to improve food safety and preservation, eliminating efficiently bacterial pathogens, parasites and insects. This study aims to characterize the toxicological potential of 2-alkylcyclobutanones (2-ACBs), radiolytic derivatives of triglycerides, formed uniquely upon irradiation of fat-containing food. In irradiated food they are generated proportionally to fat content and absorbed radiation dose. The cyto- and genotoxic potentials of various highly pure synthetic 2-ACBs were studied in bacteria and human cell lines. While pronounced cytotoxicity was evident in bacteria, no mutagenic activity has been revealed by the Ames test in Salmonella strains TA 97, TA 98 and TA 100. In mammalian cells genotoxicity was demonstrated mainly by the induction of DNA base lesions recognized by the Fpg protein as determined by both the Comet Assay and the Alkaline Unwinding procedure. Formation of DNA strand breaks was observed by the Alkaline Unwinding procedure but not by the Comet Assay. The extent of cytotoxicity and genotoxicity were dependent on chain length and degree of unsaturation of the fatty acid chain. Further studies will have to clarify mechanisms of action and potential relevance for human exposure situation.
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Affiliation(s)
- A Hartwig
- Institut für Lebensmitteltechnologie und Lebensmittelchemie, Technische Universität Berlin, Gustav-Meyer-Allee 25, 13355 Berlin, Germany.
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8
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Hazelard D, Fadel A. Synthesis of optically active (+)-2-benzyl-, (+)-2-octyl-, and (+)-2-tetradec-5′-enylcyclobutanones via metallated chiral imines or hydrazones. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.tetasy.2005.04.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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9
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Marchioni E, Raul F, Burnouf D, Miesch M, Delincee H, Hartwig A, Werner D. Toxicological study on 2-alkylcyclobutanones—results of a collaborative study. Radiat Phys Chem Oxf Engl 1993 2004. [DOI: 10.1016/j.radphyschem.2004.05.042] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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