1)4-chlorogalactose4-氯半乳糖
1.With triacetyl-bromide-4-chlorogalactose,through Koenigs-Knorr reaction and esterifi-cation reaction,3-O-β-D-triacetyl-4\'-chlorogalactose ursolic ethyl ester(UA2),3-hydroxy-28-O-β-D-triacetyl-4"-chlorogalactose ursolic ester(UA5),and 3-O-β-D-triacetyl-4\'-chlorogalactose ursolic acid-28-O-β-D-triacetyl-4"-chlorogalactose ester(UA8) are synthesized.以α-D-三乙酰基-1-溴-4-氯半乳糖为原料,经Koenigs-Knorr反应、酯化反应,得到3-O-β-D-三乙酰基-4’-氯半乳糖熊果酸乙酯(UA2)、3-羟基-28-O-β-D-三乙酰基-4"-氯半乳糖熊果酸酯(UA5)和3-O-β-D-三乙酰基-4’-氯半乳糖熊果酸-28-O-β-D-三乙酰基-4"-氯半乳糖酯(UA8);研究了熊果酸衍生物脱乙酰基的条件,实验表明,在稀盐酸条件下得到4-氯半乳糖的2位保留乙酰基的产物,在固体氢氧化钠条件下得到全脱乙酰基的产物;共合成了9个熊果酸的4-氯半乳糖衍生物,所有目标化合物均为新化合物,其结构经NMR得以确认。
英文短句/例句
1.Synthesis of the Derivatives of Ursolic Acid 4-Chlorogalactose熊果酸的4-氯半乳糖衍生物的合成
2.Research on a Mew Synthetic Process of Sucraclose;高甜度甜味剂三氯半乳蔗糖的合成工艺研究
3.Southern Blot and Expression Analysis of 4 α-galactosidases in Cucumber (Cucumis Sativus L.);黄瓜4种α-半乳糖苷酶的Southern杂交及表达分析
4.Studies on Synthesis of Protected α-D-Gal(1→4)-β-D-Glc and Its Analogues;保护的α-D-半乳糖基（1→4）-β-D-葡萄糖苷及其类似物的合成研究
5.One possible structure for the arabinogalactan from SEPS is shown in Fig. 4.图4表示从SEPS分离的阿拉伯半乳聚糖的一种可能的结构型。
6.Developmental Expression and Function of β-galactosyltransferase in Mouse Brain and Testis;小鼠器官发育中β-1，3（4）-半乳糖基转移酶的表达及功能的研究
7.An enzyme that catalyzes the hydrolysis of a galactoside.半乳糖酵催化半乳糖水解的一种酶
8.An amino - acid derivative of galactose.半乳糖胺半乳糖的一种氨基酸衍生物
9.Saccharide: Glucose, mannose, xylose and galactose and so on are included.糖类：包括葡萄糖、甘露糖、木糖、半乳糖等。
10.Lactose gives glucose and galactose.乳糖产生葡萄糖和半乳糖。
11.Any of a group of glycosides that yield galactose on hydrolysis.半乳糖苷导致半乳糖水解的一组配糖的一种
12.galactosaminyl transferase氨基半乳糖基转移酶
13.galactosyl hydrolaseβ-半乳糖苷水解酶
14.The Study on Immobilized β-Galactosidase and Its Application in Synthesis of Galactooligosaccharides;固定化的β-半乳糖苷酶合成低聚半乳糖的研究
15.The main component of both endosperms is a galactomannan.两个胚乳的主要成分是半乳甘露聚糖。
16.Synthesis of β-Boswellic Acid-3-O-β-D-Galactosideβ-乳香酸-3-O-β-D-半乳糖苷的合成
17.The Synthesis of Galactosyl and Bisglycosyl Guanidines;半乳糖基及二糖基胍类化合物的合成
18.The Synthesis of Galacosylguanidines and Glycosylisoureas Derivatives;半乳糖基胍及糖基异脲衍生物的合成
相关短句/例句
4-chloro-4-deoxy-α-D-galactose4-氯-4-脱氧-α-D-半乳糖
1.Methods: Condensation of 4-chloro-4-deoxy-α-D-galactose withacetylacetone in the presence of zinc chloride gave the newcompound 3,which was characterized by1H,13C NMR spectraand X-ray crystal analysis.方法:在氯化锌催化下4-氯-4-脱氧-α-D-半乳糖与乙酰丙酮反应得到新化合物3,并用IR,NMR,HRMS及X射线单晶衍射等手段对其进行了表征。
3)galactochloral半乳糖氯醛
4)β1-4galactosyltransferaseβ1-4半乳糖基转移酶
5)UDP-galactose 4-epimeraseUDP-半乳糖4-异构酶
1.UDP-galactose 4-epimerase (EC 5.UDP-半乳糖4-异构酶(EC 5。
6)galacto waldenaseUDP半乳糖-4-差向异构酶
延伸阅读
[3-(aminosulfonyl)-4-chloro-N-(2.3-dihydro-2-methyl-1H-indol-1-yl)benzamide]分子式：C16H16ClN3O3S分子量：365.5CAS号：26807-65-8性质：暂无制备方法：暂无用途：用于轻、中度原发性高血压。
