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
试验以对硝基-β-D-葡萄糖苷为底物,对尖孢镰刀菌中的β-D-葡萄糖苷酶活性测定条件进行了研究,包括缓冲液pH值、底物浓度、反应温度和时间等条件对酶活性的影响。结果表明,当温度为50℃、pH5.0、底物浓度达到4 mmol/L、反应时间为16 m i...试验以对硝基-β-D-葡萄糖苷为底物,对尖孢镰刀菌中的β-D-葡萄糖苷酶活性测定条件进行了研究,包括缓冲液pH值、底物浓度、反应温度和时间等条件对酶活性的影响。结果表明,当温度为50℃、pH5.0、底物浓度达到4 mmol/L、反应时间为16 m in时,酶活力达到最大。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.
