Results 71 to 80 of about 603,240 (303)

Synthesis and use of a stable aminal derived from TsDPEN in asymmetric organocatalysis [PDF]

open access: yes, 2010
A stable aminal formed stereoselectively from (R,R)-N-tosyl-1,2-diphenyl-1,2-ethylenediamine (TsDPEN) is capable of asymmetric organocatalysis of Diels-Alder and alpha-amination reactions of ...
Clarkson, Guy J.   +3 more
core   +1 more source

In-situ cross linking of polyvinyl alcohol [PDF]

open access: yes, 1981
A method of producing a crosslinked polyvinyl alcohol structure, such as a battery separator membrane or electrode envelope is described. An aqueous solution of a film-forming polyvinyl alcohol is admixed with an aldehyde crosslinking agent a basic pH to
Hsu, L. C.   +2 more
core   +1 more source

Ugi multicomponent reaction to prepare peptide–peptoid hybrid structures with diverse chemical functionalities [PDF]

open access: yes, 2018
Monodisperse sequenced peptides and peptoids present unique nano-structures based on their self-assembled secondary and tertiary structures. However, the generation of peptide and peptoid hybrid oligomers in a sequence-defined manner via Ugi ...
Azevedo, Helena S.   +12 more
core   +1 more source

Salen–scandium(III) complex-catalyzed asymmetric (3 + 2) annulation of aziridines and aldehydes

open access: yesBeilstein Journal of Organic Chemistry
Oxazolidine is one of the crucial structural moieties of biologically active compounds. A salen–scandium triflate complex-catalyzed asymmetric (3 + 2) annulation of dialkyl 1-sulfonylaziridine-2,2-dicarboxylates and aldehydes generated optically active ...
Linqiang Wang, Jiaxi Xu
doaj   +1 more source

Nature's Starships II: Simulating the Synthesis of Amino Acids in Meteorite Parent Bodies

open access: yes, 2015
Carbonaceous chondrite meteorites are known for having high water and organic material contents, including amino acids. Here we address the origin of amino acids in the warm interiors of their parent bodies (planetesimals) within a few million years of ...
Cobb, Alyssa K.   +2 more
core   +1 more source

Facile synthesis of bis(indolyl)methanes using iron(III) phosphate [PDF]

open access: yesJournal of the Serbian Chemical Society, 2012
A new, convenient and high yielding procedure for the preparation of bis(indolyl)methanes in glycerol by electrophilic substitution reaction of indole with aldehydes in the presence of catalytic amount of FePO4 (5.0 mol%) as a highly stable and ...
Behbahani Kargar Farahnaz   +1 more
doaj   +1 more source

Site directed mutagenesis and purification of the cDNA for human class I aldehyde dehydrogenase : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science at Massey University [PDF]

open access: yes, 1998
Aldehyde dehydrogenase (ALDH) is a key enzyme of alcohol metabolism, removing acetaldehyde which is formed as a product of the alcohol dehydrogenase reaction.
Wansbrough, Erin M
core  

Aldehyde Dehidrogenase Level and Fatty Acid Ethyl Ester as Biochemical Markers Persist Longer Than Ethanol in Wistar Rats After Chronic Alcohol Consumption [PDF]

open access: yes, 2010
Alcohol consumption in human has increased from year to year in Indonesia and more recently, anincreasing number of cases of alcohol intoxication, alcoholic liver disease, and death were observed.The purpose of this experimental study was to examine the ...
Astawa, N. M. (Nyoman)   +3 more
core  

Evaluation of two eco-friendly neutralizers for a spectrum of tissue fixatives for biomedical applications. [PDF]

open access: yes, 2018
Formaldehyde is a widely used aldehyde in biomedical applications, including tissue fixation. It is this same fixative property that can result in toxicity if aldehydes are improperly discarded.
Carmichael, Stanley Thomas   +1 more
core  

Biosynthesis of lignans. Part I . Biosynthesis of Arctiin (3) and Phillyrin (5) [PDF]

open access: yes, 1977
Lignans constitute a class of naturally occuring phenolic compounds, widely distributed in higher plants. They are formally composed of two phenylpropanoid units, stercospecifically joined at the /f-carbon atoms of their side chains. Their biosynthesis
Klischies, Martina, Stöckigt, Joachim
core   +1 more source

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