Výsledky vyhledávání - "Edyta M. Greer"

Synthesis, Characterization, and Photocleavage of Bis-Decyl Pteroic Acid: A Folate Derivative with Affinity to Biomembranes

Autor: José Luis Fonseca, María José Sosa, Gabriela Petroselli, Rosa Erra‐Balsells, Matías I. Quindt, Sergio M. Bonesi, Alexander Greer, Edyta M. Greer, Andrés H. Thomas, Mariana Vignoni

Publikováno v: Photochemistry and photobiology.

Here, we provide mechanistic insight to the photocleavage of a compound in the folate family, namely pteroic acid. A bis-decyl chain derivative of pteroic acid was synthesized, structurally characterized, and photochemically investigated. We showed t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18bfe72e00c85ddae895c8e96acc19b4
https://pubmed.ncbi.nlm.nih.gov/36478217

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Mono- and Bis-Alkylated Lumazine Sensitizers: Synthetic, Molecular Orbital Theory, Nucleophilic Index and Photochemical Studies

Autor: Dobrushe Denburg, Alexander Greer, Edyta M. Greer, María José Sosa, Mariana Vignoni, María Noel Urrutia, Sergio M. Bonesi, Patricia Laura Schilardi, Matías Iván Quindt, Andrés H. Thomas

Publikováno v: CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

Mono- and bis-decylated lumazines have been synthesized and characterized. Namely, mono-decyl chain [1-decylpteridine-2,4(1,3H)-dione] 6a and bis-decyl chain [1,3-didecylpteridine-2,4(1,3H)-dione] 7a conjugates were synthesized by nucleophilic substi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::567795f3b4692683d9ae9d46665b1eb6
https://pubmed.ncbi.nlm.nih.gov/32628299

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S,S-Chiral Linker Induced U Shape with a Syn-facial Sensitizer and Photocleavable Ethene Group

Autor: Alexander Greer, Edyta M. Greer, Goutam Ghosh, Niluksha Walalawela, Andrés H. Thomas, Mariana Vignoni, Callistus Chiemezie, Sarah J. Belh, Ashwini A. Ghogare, Sherri A. McFarland

Publikováno v: CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

There is a major need for light-activated materials for the release of sensitizers and drugs. Considering the success of chiral columns for the separation of enantiomer drugs, we synthesized an S,S-chiral linker system covalently attached to silica w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e9f70c53ea12997972793049c3abcc3
https://doi.org/10.1111/php.13000

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Kinetic Control in the Regioselective Alkylation of Pterin Sensitizers: A Synthetic, Photochemical, and Theoretical Study

Autor: Niluksha Walalawela, Mariana Vignoni, María Noel Urrutia, Edyta M. Greer, Alexander Greer, Andrés H. Thomas, Sarah J. Belh

Publikováno v: CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

Alkylation patterns and excited-state properties of pterins were examined both experimentally and theoretically. 2D NMR spectroscopy was used to characterize the pterin derivatives, revealing undoubtedly that the decyl chains were coupled to either t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7df8cd0a238477f0255766bdf3ebeb16
https://doi.org/10.1111/php.12905

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Heavy‐Atom Tunneling Calculations in Thirteen Organic Reactions: Tunneling Contributions are Substantial, and Bell's Formula Closely Approximates Multidimensional Tunneling at ≥250 K

Autor: Randy Armas, Edyta M. Greer, Christopher V. Cosgriff, Dana Walker, Charles Doubleday

Publikováno v: Angewandte Chemie. 129:13279-13282

Multidimensional tunneling calculations are carried out for 13 reactions, to test the scope of heavy-atom tunneling in organic chemistry, and to check the accuracy of one-dimensional tunneling models. The reactions include pericyclic, cycloaromatizat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6681b296a2f68f000269acef26fe553d
https://doi.org/10.1002/ange.201708489

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Experimental and DFT Computational Insight into Nitrosamine Photochemistry—Oxygen Matters

Autor: Marilene Silva Oliveira, Kitae Kwon, Hellen Paula Valerio, Fernanda M. Prado, Edyta M. Greer, Alexander Greer, Ashwini A. Ghogare, Prabhu P. Mohapatra, Ciro J. Debaz, Inna Abramova, Paolo Di Mascio

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

A nitrosamine photooxidation reaction is shown to generate a peroxy intermediate by experimental physical-organic methods. The irradiation of phenyl and methyl-substituted nitrosamines in the presence of isotopically labeled 18-oxygen revealed that a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8ae7ef5b1ae6c3af30bad1f58a6f346
https://doi.org/10.1021/acs.jpca.7b02414

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Substituted pyrrole synthesis from nitrodienes

Autor: Yanan Liu, Edyta M. Greer, Shuai Ma, William F. Berkowitz, Sasan Karimi, Kitae Kwon, Gopal Subramaniam, Keith Ramig

Publikováno v: Tetrahedron Letters. 58:2223-2227

Though the Cadogan-Sundberg approach has been employed to synthesize a variety of indole and carbazole derivatives from nitroarenes, surprisingly, very little is reported for making pyrroles using the same approach from non-arene nitrodienes. Herein,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::89eb4635b9df7c118b38c0087d0ad0e3
https://doi.org/10.1016/j.tetlet.2017.04.077

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Maltol- and Allomaltol-Derived Oxidopyrylium Ylides: Methyl Substitution Pattern Kinetically Influences [5 + 3] Dimerization versus [5 + 2] Cycloaddition Reactions

Autor: Lauren P. Bejcek, William H. Hersh, Duygu M. Suyabatmaz, Aswin K. Garimallaprabhakaran, Alexander Greer, Edyta M. Greer, Ryan P. Murelli

Publikováno v: J Org Chem

Oxidopyrylium ylides are useful intermediates in synthetic organic chemistry because of their capability of forming structurally complex cycloadducts. They can also self-dimerize via [5 + 3] cycloaddition, which is an oft-reported side reaction that

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da0b79c1e52a0a7986be2befb08f3d6d
https://pubmed.ncbi.nlm.nih.gov/31603325

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