This paper reports that in the presence of cetyltrimethyl ammonium bromide as phase transfer catalyst,D-glucosamine hydrochloride reacts with 2,4-dinitrophenol to synthesize 1-O-(2’,4’-dinitrophenyl)-2-acetamido-β-...This paper reports that in the presence of cetyltrimethyl ammonium bromide as phase transfer catalyst,D-glucosamine hydrochloride reacts with 2,4-dinitrophenol to synthesize 1-O-(2’,4’-dinitrophenyl)-2-acetamido-β-D-glucoside.Chemical structure of the new compound was confirmed by elemental analysis,IR and UV.展开更多
Starting from \%D\%\|galactose, per\|\%O\|\%acetylated (\%S\%)\|TBMB carboxylic acid derivant of methyl\|4\|amino\|4\|deoxy\|\%D\%\|glucopyranoside was prepared. The mechanism of the possible side reactions of the cat...Starting from \%D\%\|galactose, per\|\%O\|\%acetylated (\%S\%)\|TBMB carboxylic acid derivant of methyl\|4\|amino\|4\|deoxy\|\%D\%\|glucopyranoside was prepared. The mechanism of the possible side reactions of the catalytic reduction from different types of azide sugar to the corresponding amino sugar was discussed. 1\|\%O\%\|Me\|protection was selected for preventing the intramolecular dehydration of the 4\|amino sugar, which was a key intermediate product in this synthetic process. The product was characterized by HRMS and \{\{\}\+1H NMR\} spectroscopy and will be used as a molecular model to develop a new identification method of the \%D, L\|\%configurations of amino sugar.展开更多
文摘This paper reports that in the presence of cetyltrimethyl ammonium bromide as phase transfer catalyst,D-glucosamine hydrochloride reacts with 2,4-dinitrophenol to synthesize 1-O-(2’,4’-dinitrophenyl)-2-acetamido-β-D-glucoside.Chemical structure of the new compound was confirmed by elemental analysis,IR and UV.
文摘Starting from \%D\%\|galactose, per\|\%O\|\%acetylated (\%S\%)\|TBMB carboxylic acid derivant of methyl\|4\|amino\|4\|deoxy\|\%D\%\|glucopyranoside was prepared. The mechanism of the possible side reactions of the catalytic reduction from different types of azide sugar to the corresponding amino sugar was discussed. 1\|\%O\%\|Me\|protection was selected for preventing the intramolecular dehydration of the 4\|amino sugar, which was a key intermediate product in this synthetic process. The product was characterized by HRMS and \{\{\}\+1H NMR\} spectroscopy and will be used as a molecular model to develop a new identification method of the \%D, L\|\%configurations of amino sugar.