Abstract
AbstractSugar compounds generally consist of several hydroxyl groups, responsible for the generation of complex oligosaccharides and are discriminated against or manipulated by using protecting groups. The protecting groups in carbohydrate chemistry adopt a central position in controlling stereoselectivity of glycosylation reaction. In all, picoloyl (Pico) and picolinyl (Pic) group are scrutinize as admirable protecting groups for the evaluation of efficient and convenient glycosyl donors which in turn, synthesize both 1,2‐cis‐ and 1,2‐trans‐linked complex and challenging oligosaccharides stereoselectively either through hydrogen bond mediated aglycone delivery (HAD) or by neighbouring group participation. This review explores the recent advances in the use of picoloyl (Pico) and picolinyl (Pic) as stereo‐directing groups for high facial α‐ or β‐stereoselectivity and its applications in the synthesis of biologically important oligosaccharides.
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