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Pseudoceramide şi derivaţi ai acestora 2.Ciclohexiliden acetali ai N-acetil-N-metil glucozaminei

Domenii publicaţii > Chimie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: V. Rusu, E. Sisu, C. Neanu, I. Sisu, A. Lascu, M.T.Caproiu, P. Francisc, C. Csunderlik

Editorial: Rev.Chim., 53(12), p.815-818, 2002.

Rezumat:

Acetalation of N-acetyl-N-methyl-1-amino-1-deoxy-D-glucitol with 2.5 equivalents of 1,1-dimethoxycyclohexane in N,N-dimethylformamide at O0C with CSA as catalyst give 5,6-O- cyclohexylidene-N-acetyl-N-methyl-glucamine with 57 % yield. 2,3 :4,6-di-O- cyclohexylidene-N-acetyl-N-methyl-glucamine, 4,6-O-cyclohexylidene -N-acetyl-N-methyl-glucamine and a mixture of 2,3 :5,6- and 3,4 :5,6-di-O- cyclohexylidene -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 1HNMR,13CNMR and mass

Cuvinte cheie: 5,6-O- cyclohexylidene -N-acetyl-N-methyl-glucamine, 2,3 :4,6-di-O- cyclohexylidene -N-acetyl-N-methyl-glucamine, 4,6-O- cyclohexylidene -N-acetyl-N-methyl-glucamine, 2,3 :5,6- di-O- cyclohexylidene -N-acetyl-N-methyl-glucamine, 3,4 :5,6-di-O- cyclohexylidene -N-acetyl-N-methyl-glucamine, 13CNMR