Examples of 'activated ester' in a sentence
Meaning of "activated ester"
activated ester: Activated ester is a chemical compound used in organic chemistry for reactions involving nucleophilic acyl substitution. It is a reactive intermediate often employed in peptide synthesis and other organic reactions
How to use "activated ester" in a sentence
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activated ester
The blue colour of activated ester developed.
The activated ester includes various kinds of esters.
Can be added to produce an activated ester.
Adding said activated ester to an enzyme.
The ester was coupled to the piperidine fragment vía an activated ester.
These activated ester compounds are known from the literature.
Preparation of the activated ester.
This activated ester was used in situ in the following step.
The surface of the microsystem then exhibits activated ester functions.
An activated ester such as the pentafluorophenyl ester is preferably used.
General procedure for amide formation from an activated ester derivative.
Activated ester groups are known to the person skilled in the art.
The cyanines attach to the protein vía the activated ester of hexanoic acid.
The activated ester derivatives are represented by the general formula where.
The residue was triturated with dichloromethane to remove the unreacted activated ester.
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Reaction between the alcohol and the activated ester to form an alcohol ester.
This activated ester was subsequently reacted with the sodium salt of lysine in aqueous tetrahydrofurane.
The amine readily reacts with this activated ester to form a stable amide bond.
The activated ester so obtained is used in Step B without being purified.
Alternatively, the activated ester may be preformed.
In certain embodiments, the aminooxy compound is an activated ester.
The final solution of the activated ester was directly used for the next chemical step.
In certain embodiments, the electrophilic compound 2 is an activated ester of an acid.
In general, an activated ester is an ester of a relatively acidic alcohol.
Typically, the label may be attached vía an activated ester to the linker.
Alternatively, the activated ester is suitable for coupling to a carrier protein to form an immunogen.
The resulting acid 8 is reacted to form an activated intermediate, usually an activated ester.
In preferred embodiments of the invention, the activated ester moiety is a thioester moiety.
The resulting activated ester may be isolated and purified, or used directly in situ.
The synthesis is carried out as follows, via the intermediary of an activated ester derivative.
Anhydride, a mixed anhydride, chloride or an activated ester may be used as suitable functional derivative.
In another preferred procedure, the condensation is carried out by the activated ester method.
As a first option, the activated ester can be reacted with a diamine to produce a terminal amine.
These coating compositions are based upon solvent borne, solution polymers containing activated ester groups.
Readily hydrolyzable functional groups include activated ester bonds, such as glycolyl glycolate, and anhydride bonds.
An activated ester function is then synthesized by reaction between the acid function and N-hydroxysuccinimide.
Alternatively to coupling reagents, activated ester of Fmoc-protected amino acid linkers can be used.
The mixture was stirred for 3 hours until TCL showed complete consumption of activated ester.
The preferred activated ester is N-succinimidyl palmitate.
Upon suitable deprotection, the B-amino acid ester is coupled to an appropriate activated ester moiety.
Advantageously, the activated ester is the ester of palmitic acid and of N-hydroxysuccinimide.
Is a carboxyl, a salt, ester or activated ester thereof.
TBA salt method, activated ester method and carbodiimide method were used for peptide bond formation.
Approximately 75 % of the composition obtained was found to be an activated ester.
Alternatively to coupling reagents, activated ester of the Ns - N PEG linker can be used.
The activated ester product was not isolated, purified, or characterized.
Is hydrogen or chloro ; and is carboxyl, or a salt, ester or activated ester thereof.
Activated ester 45 was then coupled to an immunogenic protein carrier to form immunogen 46.
Suitable procedures for the formation of an activated ester or imidazolide are described in method ( 7 ).
The activated ester is prepared by reacting d-amphetamine ( or methamphetamine ) with trifluoroacetic anhydride.
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