酰化

It was found that the introduction of Cr4 moiety did not remodel the mechanism of hydroformylation of simple alkenes.

计算结果表明Cr4片段的引入并没有改变简单烯烃氢甲酰化反应的机理。

We demonstrate that both the IL-5 mRNA expression and IL-5 protein production were stimulated by TSA and NaBu treatments. Chromatin immunoprecipitation assays showed that treatments of TSA and NaBu caused hyperacetylation of histones H3 and H4 at the IL-5 gene promoter in Jurkat cells, which consequently promoted the exogenous luciferase activity driven by this promoter.

TSA和丁酸钠能促进IL-5基因的mRNA和蛋白的表达水平，并增强该基因启动子所介导的外源荧光素酶报告基因的活性，这一增强作用与两种抑制剂介导的IL-5基因启动子上组蛋白H3和H4的高乙酰化有关。

With the occurrence of H2/Pd-C and ethyl formic ester,the reduction of the nitro group and the formylation of the amino group could be finished in one step.

但是在甲酸乙酯存在下，用H2/Pd-C对Ⅶ的硝基进行还原，得到的Ⅷ中的氨基可当即被甲酰化，使由Ⅶ到Ⅳ的两步反应一步完成。

Free serine, threonine and phenylalanine showed similar effect. The mechanism of the effect was also discussed.

本论文还对N-磷酰化氨基酸与植物细胞膜的作用方式进行了探讨。

The effect on the stability of liposome of the volatile oil of houttuymia cordata encapsulated by acylated phosphatide is studied.

研究了酰化改性磷脂对包封鱼腥草挥发油的脂质体稳定性的影响。

The influence of various parameters,such as the molar ratio of rhodium to phosphine,the reaction temperature and pressure on the hydroformylation were investigated.

50年代中期[1 ] ，人们发现铑络合物比钴对氢甲酰化反应具有更高的活性，可以使反应在更温和的操作条件下进行。

It is shown from both the electronic and stereo structural analyses, that PDBP is a superior coordinate ligand as compared with TPP, which was employed in the rhodium/phosphonium catalyst for the hydroformylation reaction.

采用元素分析、红外、核磁等方法，对其结构进行了表征，并将PDBP用于丙烯氢甲酰化反应的催化剂配体。

Therefore, N-phosphoamino acids could be used as models in the study of reactions of the phosphoryl group in the life process.First of all, a series of model N-phosphpoamino acids were synthesized. And their ester exchange reaction on the phosphorous center was studied by ~(31)P NMR, HPLC, ESI-MS and ESI-MS/MS.

首先，本论文从氨基酸角度研究磷化学，合成了一系列模型化合物N-磷酰化氨基酸，利用~(31)P NMR技术研究了磷上酯交换反应，发现α-氨基酸对于磷原子存在着手性选择现象，并且这种手性选择的差异随α-氨基酸种类的不同也有所区别。

Using phosphoryl chloride as catalyst, 5,6-O-isopropylidene ascorbic acid was prepared by the reaction of Vc and acetone, then the product was treated with phosphoryl chloride to produce Magnesium L-ascorbate-2-phosphate.

在三氯氧磷催化剂作用下，Vc首先与丙酮反应生成5，6-O-异丙叉-L-抗坏血酸，再与三氯氧磷发生磷酰化反应合成得到。

This new method used in this paper for porcine kidney aminoacylase purification has both theoretical and practical significance.

本文所建立的分离纯化和冷冻干燥氨基酰化酶的方法都具有一定的使用价值。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。