A series of protected and deprotected 2 - deoxy -2 - aromatic acyl -β- D - glucopyranoses are prepared. Six of them are confirmed by IR,1H NMR,13C NMR and elementary analyses. The preliminary antibacterial activities...
The ester is synthesized when nicotinic acid and p-nitrophenol are used as raw materials and catalised by DCC and DMAP,then ammonolyzed by chitooligosaccharides(COS) to yield N-nicotinyl COS.IR、1H NMR and 13C NMR are...