乙酸酯

三乙胺催化合成维生素E乙酸酯的研究

Study on the catalytic synthesis of Vitamin E acetate by triethy lamine

甲基溶纤剂乙酸酯，甲氧基乙醇乙酸酯（R）-4-氰基-3-羟基丁酸乙酯的合成新方法

Methylcellosolve acetate A Novel Synthesis of ( R ) - 4-Cyano-3-hydroxybutyric Acid Ethyl Ester

N，N-二甲基氨基乙酸酯的合成及其应用研究

Synthesis of N , N-Dimethyl Amino Acetates and Their Applications

端乙酸酯基GAP的合成与性能研究基于.NET的GAP标准查询系统设计与实现

Design and Implement of Standard Query System on Good Agriculture Practice Based on . NET

乙醇胺与氯乙酰氯反应得到N（2氯乙酸酯基乙基）氯乙酰胺（1）。

N ( 2 Chloroacetoxyethyl ) chloroacetamide ( 1 ) was obtained by the reaction of ethanolamine with chloroacetyl chloride .

结果表明维生素E乙酸酯在较低温度含水溶液中基本不解离；

The results showed that vitamin E acetate was stable and not hydrolyzed in water solution at lower temperature ;

三萜醇类、4-甲基甾醇类和甾醇类的乙酸酯用硝酸银-硅胶G薄层进一步分离。

The acetates of triterpene alcohols , 4-methylsterols and sterols are further separated by TLC with silver nitrate impregnated silica gel G.

阴离子表面活性剂SDS对氯乙酸酯碱性水解的影响

Effect of Anionic Surfactant Micelles SDS on the Alkaline Hydrolysis of Chloroacetates

AD钙盐中的维生素A是以其乙酸酯的形态加入，而后者不溶于水。

Vitamin A is added in the AD calcium salt in the form of ethyl ester , which is insoluble in water .

Zr（SO4）2·4H2O/SiO2催化下1,1-二乙酸酯的合成

A Procedure for Synthesis of 1,1-Diacetates Catalyzed by Zr ( SO_4 ) _2.4H_2O/SiO_2

SO4~（2-）／TiO2固体超强酸催化合成氯乙酸酯

Synthesis of chloroacetates catalyzed by solid superacid so_4 ~ ( 2 - ) / tio_2

十四酰佛波乙酸酯（PMA）对小鼠免疫细胞功能影响作用的观察

Observation of the Influences of Phorbol Myristic Acetate on Murine Immunocytes

该研究目的：研究植物甾醇乙酸酯（PSA）和植物甾醇油酸酯（PSO）抗肿瘤作用。

Objective : To investigate the anti-tumor effect of Phytosterol Acetate ( PSA ) and Phytosterols Oletate ( PSO ) .

对中间产物三氯蔗糖-6-乙酸酯，经熔点测定、IR及H-NMR确认了结构。

The structure of the last compound was confirmed by using melting point mensuration , IR and 1H-NMR .

为进一步研究该酶的性质，本实验以对硝基苯乙酸酯为底物测定了温度、pH、金属离子对酶活性的影响。

In order to ascertain the nature of the pyrethroid hydrolase concerned , effects of temperature , pH and different metal ions on enzyme activities were assayed , with 4-nitrophenyl acetate as a substrate .

目的研究正丁胺基罗沙替丁乙酸酯（BRA）对动物实验性胃溃疡的影响。

OBJECTIVE To study the effects of butylamine roxatidine acetas ( BRA ) on experimental gastric ulcer in mice .

利用化学催化剂与生物催化剂的相容性通过一锅化反应合成（S）-乙酸-α-氰基-3-苯氧基苄酯（CPB乙酸酯）是本文的基本思路。

Taking use of the compatibility of chemical catalysts and biological catalysts to prepare CPB acetate in one reactor is the basic idea of this paper .

方法血清PON1活性用酚乙酸酯为底物测定。血浆氧化型低密度脂蛋白（OXLDL）用ELISA法测定。

Methods Serum PON-1 activity was assayed using phenylacetate as the substrate and plasma oxidized low-density lipoprotein ( ox-LDL ) was determined by ELISA .

本文主要对太湖地区12个典型水稻土剖面的荧光素二乙酸酯（FDA）水解酶活性及其它相关酶活性进行了分析。

The activities of fluorescein diacetate ( FDA ) hydrolysis and soil enzymes of 12 high fertility paddy soils located in Taihu region were analyzed in this paper .

目的丙烯醛雾化吸入2周诱导小鼠气道重塑模型，研究NF-κB易位抑制剂咖啡酸苯乙酸酯（CAPE）对小鼠早期气道重塑的干预作用。

Objective : To investigate the effect of caffeic acid phenethyl ester ( CAPE ), an inhibitor of NF - κ B on early airway remodeling of mice inhaled with acrolein fog for two weeks .

对固体超强酸ZrO2－SO4~（2－）催化合成核黄素四乙酸酯进行了研究。

The riboflavin tetraacetate was synthesized starting from riboflavin and acetic anhydride , and the solid superacid ZrO_2 - SO_4 ~ ( 2 - ) as catalyst .

金属钐/氯化铵水溶液体系促进的从Baylis-Hillman乙酸酯和硫代硫酸钠选择性合成二（Z）-烯丙基二硫醚或α-甲基肉桂酸酯的研究

Sm / NH_4Cl ( aq . ) System-Mediated Selective Synthesis of Di ( Z-allyl ) Disulfides or α - Cinnamic Esters from Baylis-Hillman Acetates and Sodium Thiosulfate

三萜醇乙酸酯和4-甲基甾醇乙酸酯是采用20%硝酸银-硅胶G薄板，并用二氯甲烷-石油醚（8：2v/v）作展开剂进行分离的。

The acetates of triterpene alcohols and 4-methylsterols are separated by TLC with 20 % silver nitrate impregnated silica gel G , using CH_2CL_2-petroleum ( 8:2v / v ) as developing reagents . The identification of major components is carried out by TLC , m.

第一部分：在固体酸TiO2/SO4~（2-）催化下，醛和乙酐作用生成1，1-二乙酸酯及1，1-二乙酸酯裂解进行羰基的保护及脱保护的研究。

In the first part , Studying on the protection and deprotection carbonyl compounds from aldehyde with Acetic anhydride catalysed by Ti02 / S042 . There is high selectivity in protection of aldehyde .

以芳醛、丙二腈（或氰乙酸酯）、β-萘酚为原料在六氢吡啶存在下以乙醇为溶剂一锅合成了取代萘并吡喃，产物的结构通过单晶X射线衍射分析确定。

The substituted naphthopyrans have been synthesized by the reaction of aromatic aldehydes with malononitrile ( or ethyl cyanoacetate ) and β - naphthol in ethanol at reflux in the presence of piperidine . The structure of 4h was determined by single-crystal X-ray diffraction study .

甲砜霉素氯乙酸酯Delepine反应的研究

Studies on Delepine reaction of thiamphenicol glycinate hydrochloride

28个化合物分为四种不同结构：甲氧基取代，羟基取代，乙酸（乙酸酯）类和Mannich碱。

Total 28 compounds are divided into four different categories : methoxy - substituted , hydroxyl-substituted , acetic acid ( acetic acid ethyl ester ), Mannich base of hydroxyl - and dihydroxyl-analogues .

抗菌活性结果表明刺松藻组分C2具有抑制枯草芽孢杆菌活性，对C2组分进行进一步的活性追踪。但从中分离得到的化合物植物醇乙酸酯没有表现出相应活性。

Subfractions C2 from petroleum ether-soluble fractions of Codium fragile showed antibacterial activities against Bacillus subtilis , however , the compound phytyl acetate obtained from the subfractions C2 exhibit no antibacterial activities against Bacillus subtilis at all .

用SFMA作为聚合物催化剂催化P-硝基苯酚乙酸酯（PNPA）的水解反应。

The Catalytic kinetics of hydrolysis of p - nitrophenyl acetate ( PNPA ) by SFMA was investigated .

用Mg-Al基复合物催化环氧丙烷（PO）一步嵌入乙酸酐（AA）合成了1,2-丙二醇二乙酸酯（PGDA），经红外光谱、电喷雾质谱鉴定得到了预期产物。

A one-pot process catalyzed by Mg-Al composite is used to synthesize 1,2-propylene glycol diacetate ( PGDA ) by inserting propylene oxide ( PO ) into acetic anhydride ( AA ) directly .