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Orthogonal protection is a strategy allowing the specific deprotection of one protective group in a multiply-protected structure. For example, the amino acid tyrosine could be protected as a benzyl ester on the carboxyl group, a fluorenylmethylenoxy carbamate on the amine group, and a tert -butyl ether on the phenol group.
Protection of amines can also be accomplished in acetonitrile solution using 4-dimethylaminopyridine (DMAP) as the base. Removal of the BOC group in amino acids can be accomplished with strong acids such as trifluoroacetic acid in dichloromethane , or with HCl in methanol .
Different thiol protecting groups provide multiple dimensions of orthogonal protection. These orthogonally protected cysteines are incorporated during the solid-phase synthesis of the peptide. Successive removal of these groups, to allow for selective exposure of free thiol groups, leads to disulfide formation in a stepwise manner.
The line segments AB and CD are orthogonal to each other. In mathematics, orthogonality is the generalization of the geometric notion of perpendicularity.Whereas perpendicular is typically followed by to when relating two lines to one another (e.g., "line A is perpendicular to line B"), [1] orthogonal is commonly used without to (e.g., "orthogonal lines A and B").
Orthographic projection (also orthogonal projection and analemma) [a] is a means of representing three-dimensional objects in two dimensions.Orthographic projection is a form of parallel projection in which all the projection lines are orthogonal to the projection plane, [2] resulting in every plane of the scene appearing in affine transformation on the viewing surface.
Nearly a dozen lawsuits allege that DOGE's access to government payment and personnel systems violates a litany of federal privacy and record-handling laws.
The transformation P is the orthogonal projection onto the line m.. In linear algebra and functional analysis, a projection is a linear transformation from a vector space to itself (an endomorphism) such that =.
Meshkati noted the flight crew acts as another layer of fire protection for passengers by ensuring a quick and orderly exit, which may have saved lives. Hassan Shahidi, president and CEO of the ...