Results 51 to 60 of about 4,067 (210)

Metal‐Free Electrophilic Borylative Cyclizations of Alkynes

The Chemical Record, EarlyView.
Metal‐free borylative cyclizations based on electrophilic alkyne activation by boron Lewis acids provide efficient access to borylated hetero‐ and carbocycles. Early studies using B(C6F5)3 displayed limited scope and application, whereas recent ClBcat‐ and BCl3‐based methods enable mild CB and CC/CX bond formation for the synthesis of cycles ...
Jaime Mateos‐Gil, Marcos Humanes, Manuel A. Fernández‐Rodríguez, Patricia García‐García   +3 more
wiley   +1 more source

Therapeutic effect of NEO400, perillyl alcohol conjugated to linoleic acid, in a mouse model of UV‐induced skin damage

Photochemistry and Photobiology, Volume 101, Issue 2, Page 338-349, March/April 2025.
In the present work with mouse models, we demonstrate that a novel compound, NEO400, is able to profoundly protect skin against damage caused by UV radiation (UVR) when it is applied to skin post‐UVR exposure. In comparison, Aloe vera or linoleic acid are unable to achieve a similar level of protection.
Stephen Swenson, Catalina Silva‐Hirschberg, Liliana Freeland, Kristen L. Chen, Nagore I. Marín‐Ramos, Axel H. Schönthal, Thomas C. Chen   +6 more
wiley   +1 more source

A modular approach to prepare enantioenriched cyclobutanes: synthesis of (+)-rumphellaone A [PDF]

, 2019
A modular synthesis of enantioenriched polyfunctionalized cyclobutanes was developed that features an 8-aminoquinolinamide directed C–H arylation reaction. The C–H arylation products were derivatized through subsequent decarboxylative coupling processes.
Beck, Jordan C., Chapman, Lauren M., Lacker, Caitlin R., Reisman, Sarah E.   +3 more
core   +1 more source

Enantioselective synthesis of cyclobutylboronates via a copper-catalyzed desymmetrization approach [PDF]

, 2016
This is the peer reviewed version of the following article: Guisán-Ceinos, M., Parra, A., Martín-Heras, V. and Tortosa, M. (2016), Enantioselective Synthesis of Cyclobutylboronates via a Copper-Catalyzed Desymmetrization Approach. Angew. Chem., which has
Guisán-Ceinos, M., Martín-Heras, Víctor, Parra, A., Tortosa Manzanares, Mariola   +3 more
core   +2 more sources

Interventional human ocular safety experiments for 222‐nm far‐ultraviolet‐C lamp irradiation

Photochemistry and Photobiology, Volume 101, Issue 2, Page 517-526, March/April 2025.
To directly assess the ocular safety of 222‐nm far‐ultraviolet‐C (UVC) irradiation in humans, five subjects were exposed to 222‐nm UVC at doses of 22, 50, and 75 mJ/cm2. The findings indicate that far‐UVC irradiation does not cause “clinically significant photokeratitis” or long‐term ocular damage, though it may induce temporary discomfort.
Kazunobu Sugihara, Sachiko Kaidzu, Masahiro Sasaki, Masaki Tanito   +3 more
wiley   +1 more source

Catalysis by electrons and holes: formal potential scales and preparative organic electrochemistry [PDF]

, 2015
The present review surveys current chemical understanding of catalysis by addition and removal of an electron. As an overarching theme of this type of catalysis, we introduce the role of redox scales in oxidation and reduction reactions as a direct ...
Fenwick, Aidan Q., Gustafson, Jeffrey L., Luca, Oana R., Maddox, Sean M., Smith, Daryl C.   +4 more
core   +1 more source

Spectroscopic analysis of bacterial photoreactivation

Photochemistry and Photobiology, Volume 101, Issue 2, Page 494-504, March/April 2025.
This study investigates the effectiveness of fluorescence and Raman spectroscopy in detecting bacterial photoreactivation. Fluorescence spectroscopy shows limitations, because the intense fluorescence of tryptophan and tyrosine masks fluorescence emitted by thymine molecules.
Keyvan Khosh Abady, Negar Karpourazar, Arjun Krishnamoorthi, Runze Li, Peter M. Rentzepis   +4 more
wiley   +1 more source

[2+2]-Photocycloadditions of 2-Acetoxy-1,4-naphthoquinone and Structure Determination of the Main Photoadducts

Photochem
The [2+2]-photocycloaddition of 2-acetoxy-1,4-naphthoquinone with 1,1-diphenylethylene, styrene and cyclopentene was conducted in a conventional batch reactor.
Madyan A. Yaseen, Zhifang Guo, Peter C. Junk, Michael Oelgemöller   +3 more
doaj   +1 more source

A 16-step synthesis of the isoryanodane diterpene (+)-perseanol [PDF]

, 2019
(+)-Perseanol is an isoryanodane diterpene that is isolated from the tropical shrub Persea indica and has potent antifeedant and insecticidal properties.
Han, Arthur, Reisman, Sarah E., Tao, Yujia   +2 more
core   +4 more sources

PLK4 is a potential therapeutic target in nonmelanoma skin cancers: Evidence from molecular and in vivo studies

Photochemistry and Photobiology, EarlyView.
Exposure to solar ultraviolet radiation is the main etiologic driver of nonmelanoma skin cancers (NMSCs), including basal cell (BCC) and cutaneous squamous cell carcinomas (cSCC), which are the most prevalent types of cancers in the US. In this study, we demonstrate that the serine/threonine kinase Polo‐like kinase 4 (PLK4) is overexpressed in NMSCs ...
Mary A. Ndiaye, Debra R. Garvey, Gagan Chhabra, Chandra K. Singh, Minakshi Nihal, Nihal Ahmad   +5 more
wiley   +1 more source