The reaction of 2,3,4-tri-O-acetyl-β-D-xylopyranosyl isothiocyanate 1 and 2-amino-4/6-substituted benzothiazoles 2a～2e gave xylopyranosylthioureas 3a～3e,which then reacted with alkyl/aryl amine in the presence of HgCl_2 to afford a series of new guanidinoxylopyranosides (4a～4e,5a～5e,6a～6e and 7a～7e).
2,3,4-三-O-乙酰基-β-D-木吡喃糖基异硫氰酸酯1与2-氨基-4/6-取代-苯并噻唑2a～2e反应,生成糖基硫脲衍生物3a～3e,再在伯胺存在下经氯化汞脱硫,得到一系列新的胍基木吡喃糖苷类化合物4a～4e,5a～5e,6a～6e,7a～7e,所有新化合物的结构均经IR,~1H NMR,MS谱和元素分析证实,所得产物均为β-构型。
Displaying xylose isomerase on yeast cell surface;
木糖异构酶在酿酒酵母细胞表面的展示
Influences of site-directed mutagenesis on the enzymeactivity and the thermostability of the xylose isomerase from Thermus thermphilus;
P137G点突变对嗜热细菌木糖异构酶酶活性及热稳定性的影响
Expression xylose isomerase on Saccharomyces cerevisiae cell surface and its influence on xylose metabolism;
木糖异构酶在酿酒酵母表面表达及对木糖代谢影响的初步研究
Effect of Xylulokinase in Sacchaomyces Cerevisiae Xylose Catabolism and Expression of Xylose Isomeras Gene Outside the Cells;
木酮糖激酶对酿酒酵母代谢工程菌木糖利用的影响及木糖异构酶基因的胞外表达
Active Expression of Xylose Isomerase from Thermobifida fusca in Saccharomyces Cerevisiae and Its Influence on Xylose Metabolism
酿酒酵母中的嗜热细菌木糖异构酶活性表达及木糖代谢研究
Molecular Evolution of Xylose Isomerase from Thermus Thermophilus and the xylA Gene from Sorangium Cellulosum: Cloning and Expression;
嗜热细菌木糖异构酶的分子改造及纤维堆囊菌xylA的克隆与表达
Expression,Purification and Enzymatic Characterization of Thermophilic Xylose Isomerase in Escherichia coli
嗜热木糖异构酶在大肠杆菌中的表达、纯化及性质研究
Studies on the Co-immobilization of β-galactosidase and Glucose Isomerase;
共固定化乳糖酶和葡萄糖异构酶的研究
Properties of L-Arabinose Isomerase and Enzymatic Preparation of D-Tagatose;
L-阿拉伯糖异构酶的酶学性质及酶法制备塔格糖研究
Purification and Enzymological Characterization of Xylanase from Erwinia Dissociant
欧文氏杆菌变异菌株木聚糖酶纯化及其酶学性质
Development of a High-yield Recombinant Strain for Xylanase Production and Characterization of the Recombinant Enzyme
高效木聚糖酶基因工程菌的构建及重组酶酶学性质与功效研究
Hydrolysis of Soybean Isoflavone Glucosides by β-Glucosidases from Trichoderma Reesei
里氏木霉β-葡萄糖苷酶水解大豆异黄酮糖苷的工艺研究
Cloning Key Xylose-metabolic Genes and Construction of Xylose-fermenting Recombinant Saccharomyces Cerevisiae Strain;
木糖代谢关键酶基因克隆及重组酵母菌株构建
Construction and Expression of Hybrid Gene Encoding Thermostable Xylanase and Property of Hybrid Enzyme;
耐热木聚糖酶杂合基因的构建、表达及产物的酶学特性研究
Expression of the Trichoderma reesei Rut C-30 Xylanase Gene 2(XynⅡ) in Pichia pastoris and Characterization of Its Recombinant Enzyme
里氏木霉木聚糖酶基因(XynⅡ)在毕赤酵母中异源表达及重组蛋白酶学性质分析
Studies on Production of Xylooligosaccharides from Corncob with Xylanase;
酶法水解玉米芯木聚糖制备低聚木糖
Food addition--Immobilized glucose isomerase preparatio
GB8274-1987食品添加剂固定化葡萄糖异构酶制剂
Study on D-mannose Isomerase Produced by Pesudomonas sp. No.2120
假单胞菌属No.2120产D-甘露糖异构酶的研究
Study on conditions of ultrasonic wave disruption for extraction of D-mannose isomerase
超声波破碎提取D-甘露糖异构酶条件的研究
Therefore, by isomerization, D-glucose, D-mannose, and D-fructose can be interconverted. Isomerization can be catalyzed by either a base or an enzyme.
因此通过异构化,D-葡萄糖、D-甘露糖和D-果糖能相互转化,异构化作用可被碱或酶催化。
Expression and Characterization of a Thermostable Glucose Isomerase from the Hyperthermophile, Thermotoga Maritima;
海栖热袍菌葡萄糖异构酶基因xylA的克隆、表达及酶学性质