Examples of 'nitrogen protecting group' in a sentence
Meaning of "nitrogen protecting group"
nitrogen protecting group: In chemistry, this phrase refers to a functional group that is used to selectively protect nitrogen atoms in molecules during chemical reactions. It helps to prevent unwanted reactions with nitrogen and allows for specific modifications elsewhere in the molecule
How to use "nitrogen protecting group" in a sentence
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nitrogen protecting group
Most preferred nitrogen protecting group is benzyl.
The tetrazoles and triazoles are optionally protected with a nitrogen protecting group.
A preferred nitrogen protecting group is benzyl.
After the alkylation reaction has been completed, the nitrogen protecting group is removed.
Q is a nitrogen protecting group.
When present is hydrogen or a nitrogen protecting group.
PG is a nitrogen protecting group such as CBz or boc.
In situ cleavage of the benzoyl nitrogen protecting group was observed.
Other suitable nitrogen protecting groups and nitrogen protecting group reagents are disclosed in Greene.
Diastereoselectivity of this reaction depends on the nitrogen protecting group, and on the imine substituent.
Removal of the nitrogen protecting group provides the required Formula III intermediate.
The term " protected amino " refers to a primary or secondary amine having a nitrogen protecting group.
Of course any operable nitrogen protecting group is included.
Additionally, the formation of such salts can occur concomitantly with deprotection of a nitrogen protecting group.
Pg is a suitable nitrogen protecting group.
See also
The oxazolidine may be hydrolyzed back to the nor-compound so could act a nitrogen protecting group.
A preferred nitrogen protecting group is Fmoc.
Additionally, the formation of such salts can occur simultaneously upon deprotection of a nitrogen protecting group.
Removal of the trifluoroacetyl nitrogen protecting group yields the desired compound of the formula IE.
Nitrogen protecting group ( Prot ) means a group capable of protecting a nitrogen from a reaction.
Removal of the trifluoroacetyl nitrogen protecting group yields the desired compound of the formula IG.
Also, the process of the present invention is carried wherein R2 is a nitrogen protecting group.
Protecting the azetidine nitrogen with a nitrogen protecting group P to form a compound of the formula.
The nitrogen protecting group Q is preferably a trifluoroacetyl group or a t - butoxy carbonyl group.
PG refers to a suitable nitrogen protecting group such as BOC.
Suitable nitrogen protecting group R14 for use in this reaction includes diarylmethylidene such as diphenylmethylidene.
R5 is a suitable nitrogen protecting group.
If C is a nitrogen protecting group such as tert-butoxycarbonyl the activated form may be an anhydride.
J is a group of the formula G is a nitrogen protecting group or hydrogen ;.
G is a nitrogen protecting group or hydrogen ;.
In Scheme II, tert-butoxycarbonyl can be other suitable nitrogen protecting group such as benzyloxycarbonyl.
When the nitrogen protecting group is no longer needed, it may be removed.
The process of claim 1 further comprising removing the nitrogen protecting group P.
The preferred nitrogen protecting group is BOC.
Pyrazole 77 is obtained by removal of the pyrazole nitrogen protecting group.
Preferably, the nitrogen protecting group is benzyloxycarbonyl.
As used herein the term " Pg " refers to a suitable nitrogen protecting group.
Removal of the nitrogen protecting group e . g.
The nitrogen protecting group R8a or R9b may be removed by conventional procedures e.g. hydrogenolysis.
In certain embodiments, the nitrogen protecting group is a Boc protecting group.
The nitrogen protecting group is then removed to provide a compound of formula 7a-d, respectively.
In a preferred embodiment, the nitrogen protecting group Q is the trifluoroacetyl goup.
The nitrogen protecting group is then removed to provide a compound of formula 7a-e, respectively.
In some embodiments, RA2 is a nitrogen protecting group.
Preferred nitrogen protecting group are tert-butyloxycarbonyl, benzyl oxycarbonyl and benzyl.
Process according to claim 1, in which said nitrogen protecting group ( P ) is acetamide.
Preferably the nitrogen protecting group is an amine protecting group and / or an amide protecting group.
Where used herein, the term " Pg " refers to a suitable oxygen or nitrogen protecting group.
A preferred divalent nitrogen protecting group is N-phthalimidyl.
In the above schemes, RN, RN ' and RN " each independently represent a nitrogen protecting group.
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