The octulosonic acid Kdo is a central component of the outer membrane of Gram-negative bacteria. In the context of this master thesis the suitability of novel derivatives of Kdo for the synthesis of bacterial carbohydrate structures was studied. In particular the formation of thioglycosides of Kdo which possess a new form of silyl clip was performed. Therefore a multi-level synthesis was developed via silylation reactions and alkylation of tin acetals which led to novel forms of Kdo donors. Applying the Kdo donor in two model reactions for the disaccharide formation using a glucosamine acceptor, however, gave only elimination products of the Kdo donor. Thus, the published results of similar thio-donors were confirmed. Nevertheless, the new protecting group scheme allows for assembly of branched Kdo structures, such those occurring as carbohydrate antigens in the cell wall of Chlamydia.