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    STUDIA CHEMIA - Issue no. 1 / 2006  
         
  Article:   PSEUDOCERAMIDES AND THEIR DERIVATIVES. 3. BENZYLIDENE ACETALS OF N-ACETYL-N-METHYL GLUCAMINE ľ PRELIMINARY STUDY..

Authors:  CRISTIAN NEANU, FRANCISC PETER, IOANA ŞIŞU, CAROL CSUNDERLIK, EUGEN ŞIŞU.
 
       
         
  Abstract:  Acetalization of N-acetyl-N-methyl-1-amino-1-deoxy-D-glucitol with 2.5 equivalents of 1,1-dimethoxybenzaldehide in N,N-dimethylformamide at reflux temperature with camphorsulphonic acid as catalyst yielded 5,6-O-benzylidene-N-acetyl-N-methyl-glucamine as the major product. 2,3:4,6-di-O-benzylidene-N-acetyl-N-methyl-glucamine, 4,6-O-benzylidene-N-acetyl-N-methyl-glucamine and a mixture of 2,3:5,6- and 3,4:5,6-di-O-benzylidene-N-acetyl-N-methyl-glucamine byproducts have been also isolated. Separation and purification conditions of these new products are described. The structures have been assigned by 13C-NMR and MS-EI.  
         
     
         
         
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