<p>Azasugars are structural analogues of carbohydrates whereby the oxygen in the heterocyclic ring is substituted for a nitrogen. These carbohydrates are an important class of compounds with medicinal bioactivities and have shown potential for the treatment of diabetes, viral-infection, cancers, and lysosomal storage diseases. 1-deoxymannojirimycin (DMJ), is a mannosidase inhibiting azasugar which has shown anti-cancer and anti-viral activity. There has been significant effort put towards developing methodology to produce this compound and libraries of its derivatives. This thesis presents the synthesis of DMJ and a selection of its derivatives via an efficient 4 step methodology from a carbohydrate starting material, exploiting chemo and regioselective reactions to allow for a total synthesis with minimal use of protecting groups. The synthesis of DMJ, using the methodology developed herein, surpasses published syntheses in efficiency. This synthetic strategy was then used for the preparation of N-functionalised DMJ derivatives without the requirement of additional synthetic steps. To illustrate the versatility of this methodology, a selection of derivatives incorporating different functionalities have been synthesised.</p>
<p>Azasugars are structural analogues of carbohydrates whereby the oxygen in the heterocyclic ring is substituted for a nitrogen. These carbohydrates are an important class of compounds with medicinal bioactivities and have shown potential for the treatment of diabetes, viral-infection, cancers, and lysosomal storage diseases. 1-deoxymannojirimycin (DMJ), is a mannosidase inhibiting azasugar which has shown anti-cancer and anti-viral activity. There has been significant effort put towards developing methodology to produce this compound and libraries of its derivatives. This thesis presents the synthesis of DMJ and a selection of its derivatives via an efficient 4 step methodology from a carbohydrate starting material, exploiting chemo and regioselective reactions to allow for a total synthesis with minimal use of protecting groups. The synthesis of DMJ, using the methodology developed herein, surpasses published syntheses in efficiency. This synthetic strategy was then used for the preparation of N-functionalised DMJ derivatives without the requirement of additional synthetic steps. To illustrate the versatility of this methodology, a selection of derivatives incorporating different functionalities have been synthesised.</p>
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