Search engine for discovering works of Art, research articles, and books related to Art and Culture
Javascript must be enabled to continue!
Sensitized Photooxygenation of Cholesterol and Pseudocholesterol Derivatives via Singlet Oxygen
View through CrossRef
3-Substituted cholesterols and 7-substituted pseudocholesterols undergo a facile photooxygenation sensitized by 9, 10-dicyanoanthracene (DCA) and lumiflavin (LF) to give similar, oppositely-positioned enol derivatives. Both steroids showed the same reaction pattern associated with the endocyclic 5- and 4-olefin units, respectively. The reaction was proposed to proceed via the ene reaction of singlet oxygen and subsequent rearrangement of the initially formed 5a-hydroperoxides.
Title: Sensitized Photooxygenation of Cholesterol and Pseudocholesterol Derivatives via Singlet Oxygen
Description:
3-Substituted cholesterols and 7-substituted pseudocholesterols undergo a facile photooxygenation sensitized by 9, 10-dicyanoanthracene (DCA) and lumiflavin (LF) to give similar, oppositely-positioned enol derivatives.
Both steroids showed the same reaction pattern associated with the endocyclic 5- and 4-olefin units, respectively.
The reaction was proposed to proceed via the ene reaction of singlet oxygen and subsequent rearrangement of the initially formed 5a-hydroperoxides.
Related Results
Singlet Oxygen Generation by Cyclometalated Complexes and Applications
Singlet Oxygen Generation by Cyclometalated Complexes and Applications
AbstractWhile cyclometalated complexes have been extensively studied for optoelectronic applications, these compounds also represent a relatively new class of photosensitizers for ...
Singlet oxygen phosphorescence detection in living adherent cells in vitro
Singlet oxygen phosphorescence detection in living adherent cells in vitro
Abstract
Objective
Photosensitization by singlet oxygen is a chemical reaction with cellular quenchers, mainly proteins. Therefore, optical detection of singlet ox...
Expression and polymorphism of genes in gallstones
Expression and polymorphism of genes in gallstones
ABSTRACT
Through the method of clinical case control study, to explore the expression and genetic polymorphism of KLF14 gene (rs4731702 and rs972283) and SR-B1 gene...
High Concentration Oxygen and Hypercapnia in Respiratory Disease
High Concentration Oxygen and Hypercapnia in Respiratory Disease
<p>Oxygen-induced elevations in arterial carbon dioxide tension have been demonstrated in patients with chronic obstructive pulmonary disease (COPD), asthma, pneumonia, obesi...
Blunt Chest Trauma and Chylothorax: A Systematic Review
Blunt Chest Trauma and Chylothorax: A Systematic Review
Abstract
Introduction: Although traumatic chylothorax is predominantly associated with penetrating injuries, instances following blunt trauma, as a rare and challenging condition, ...
Effect of Lactobacillus plantarum BS25 on Cholesterol Levels in vitro and in BALB/c Mice (Mus musculus L.)
Effect of Lactobacillus plantarum BS25 on Cholesterol Levels in vitro and in BALB/c Mice (Mus musculus L.)
Background and Objectives:
The risk of developing cardiovascular disease due to high cholesterol level has driven the development of func...
Contractile responses to adenosine, R‐PIA and ovalbumen in passively sensitized guinea‐pig isolated airways
Contractile responses to adenosine, R‐PIA and ovalbumen in passively sensitized guinea‐pig isolated airways
Responses to adenosine, R‐PIA and ovalbumen were examined in guinea‐pig isolated superfused tracheal spirals to determine the effects of passive sensitization by overnight incubati...
Closed-Loop Oxygen Control
Closed-Loop Oxygen Control
<p>Guidelines recommend that oxygen should be titrated to achieve a target oxygen saturation (SpO2 ) range in acutely unwell patients, a concept colloquially known as “swimmi...