The use of versatile intermediates is very important for various oligosaccharide syntheses. Choices of the suitable protective groups are important for regio- and stereo-selective oligosaccharides syntheses. Synthetic strategy often determines whether the synthesis is successful or not. Protective groups must hold up against a variety of reaction conditions to construct an organic molecule but each group must be de-protected selectively for the following reaction. Thus, selective introduction and removal of protective groups are important in organic chemistry.
The page below shows chemical synthetic reagents and enzymes.