Examples of 'blocking groups' in a sentence
Meaning of "blocking groups"
blocking groups: In chemistry, refers to functional groups that prevent certain chemical reactions from occurring at specific locations on a molecule
How to use "blocking groups" in a sentence
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blocking groups
The blocking groups are eliminated by hydrolysis.
Other isomers can be obtained by appropriate use of blocking groups.
Suitable blocking groups include benzoyl and acetyl.
Amino acids and peptides may be protected by blocking groups.
Other representative blocking groups are also described herein.
Blocking groups can be added or removed by standard methods in the art.
The number of monosaccharide units having blocking groups can vary.
These blocking groups are known to the expert in the art.
Optionally the systems can also contain a catalyst or blocking groups.
Such blocking groups are known.
The blocking group may be any of the blocking groups defined above.
Appropriate blocking groups can be employed to minimize undesirable side reactions.
Such ketals and acetals are well known blocking groups in saccharide chemistry.
Chemical blocking groups or other chemical substituents may also be added.
The number of monosaccharide units having blocking groups in place of hydroxyls can vary.
See also
Such mixed blocking groups are particularly effective at providing improved stability to hydrolysis.
The product may then undergo selective hydrolysis to remove the blocking groups.
In both cases removal of blocking groups was achieved in a single hydrogenolysis step.
Protecting groups which comprise the acetal functionality have been used previously as blocking groups.
This method uses benzyl blocking groups leading to relatively low throughput.
Potentially reactive side chains functionalities are protected with blocking groups which are stable to HF.
Protecting groups are blocking groups which can be readily removed from functionalities.
More preferably, the chain ends are blocked by blocking groups of aromatic type.
This allows the blocking groups to be distinguished by both spectral and temporal means.
It has been suggested in reference 4 that effective blocking groups are electron-withdrawing groups.
Preferably different blocking groups are used to block the nucleophiles of the different diketopiperazine linkers.
Such structures are capable of self-crosslinking upon removal of the blocking groups.
These and other methods of preparing blocking groups from hydroxyl groups are well known.
Blocking groups are also referred to-herein as protective groups.
The number of monosaccharide units having blocking groups may vary in the present invention.
Trialkylsilyl blocking groups may be removed for example by solvolysis e.g. by alcoholysis.
For example, all or substantially all the monosaccharide units may have blocking groups.
Subsequent removal of the blocking groups results in the compounds of Formula I.
Usually, reactive side-chain groups of the amino acids are protected with suitable blocking groups.
Preferred blocking groups are electron-withdrawing groups.
Non-blocked transposon nucleic acids include transposon nucleic acids that lack blocking groups.
Protecting or blocking groups may be selected from,.
Also indicated in Table 1 are preferred blocking groups.
Preferred blocking groups arc electron-withdrawing groups.
Fig . 4 is a schematic illustration of some of the Z blocking groups that can be used.
Likewise, the number of blocking groups on each monosaccharide unit may vary.
Alternatively, all the Q groups may be blocking groups.
Likewise, the number of blocking groups on a monosaccharide unit may vary.
Blocking groups are usually located at the 3 ' end of the template.
For example, the benzoyl amino blocking groups can be removed by hydrolysis with ammonia.
Blocking groups were removed by catalytic hydrogenation using 10 % palladium on carbon in glacial acetic acid.
The absent - OH groups are blocking groups as defined above.
These blocking groups enhance the helix-forming tendencies of the peptides.
The next step consists of removal of the NH blocking groups from the above intermediate 4.
However, the blocking groups may be selectively removed to allow incorporation to occur.
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