FRAGMENTS OF BIOPOLYMERS CONTAINING GLYCO SYL PHOSPHATE RESIDUES .13.THE SYNTHESIS OF A PHOSPHODIESTER FRAGMENT OF THE CELL-WALL POLYMER OF ACTINOPLANES SP INA-3697

Phosphodiester fragment ManNAc(beta 1-3)GlcNAc(alpha)-P-6ManNAc (beta 1-3)GlcNAc(alpha)Bn of the cell wall polymer of the Actinoplanes sp. I NA 3697 bacteria was synthesized by the glycosyl H-phosphonate method. The disaccharide derivatives containing N-acetyl-beta-D-mannosamine, which are necessary for the condensation, were prepared via beta-gluco sylation of the corresponding protected derivative of N-acetyl-D-gluco samine with the subsequent conversion of the disaccharide into 2'-O-tr ifluoromethane sulfonate, introduction of the azide group with inversi on at C-2', and reduction.