查询词典 amino acid

In the forth part of the dissertation, based on the mechanism of classical Strecker reaction,we developeda new method for the asymmetric synthesis of the α,α-disubstituted amino acid, and applied it to theasymmetric synthesis of-αM4CPG, compound 11a and 11b.

在本论文的第四部分，我们从深入分析经典的Strecker反应入手，发展了一条新的以酮为原料出发的立体选择性地合成α，α-双取代的光学纯的氨基酸的方法，并且利用该方法立体选择性地合成了化合物-αM4CPG，11a和11b。

In the third part of this dissertation, based on the leading compound ACPD, we design and asymmetric syhthesized two analogues: 56 and 57 by using Seebach's self- regeneration strategy to synthesize α,α-disubstituted amino acid as the key step.

论文的第二部分，我们利用我们所开发的合成α，α双取代氨基酸的方法，以对甲基苯甲醛为原料，经过分子内付克烷基化、氧化银氧化和氢化等16步反应，完成了代谢型谷氨酸受体拮抗剂-AIDA的不对称合成。

Recent development of coupling reagents and methods for hindered peptide containing N-alkylated or C_α,C_α-disubstituted amino acid residues is reviewed.

本文综述了合成含N-烷基氨基酸或α，α-二取代氨基酸位阻肽的偶合试剂研究新进展，并对这些新的偶合试剂及偶合方法的优点和不足予以评述。

The synthesis of sterically hindered peptides containing N-alkylated or 〓disubstituted amino acid residues is being a challenge, which results in difficultcondensation using the usual DCC/HOBt or HOBt-derived coupling reagents.

多肽合成的一个主要难题是富含N-烷基化氨基酸或C〓二烷基化氨基酸的肽链的合成，采用BOP或HBTU等常规缩合剂往往不能得到令人满意的结果。

Human beta-defensin-2 (HBD-2) is a cysteine-rich cationic 41 amino acid antimicrobial peptide with three disulphide bonds.

人β防御素-2(HBD-2)是一种由41个氨基酸组成并富含半胱氨酸残基的阳离子抗菌短肽，内有三个二硫键。

Electrophoretic analysis, amino acid analysis, and MS of flammulin were carried out.

电泳分析、氨基酸组成分析、质谱分析等方法被用于火菇素的理化性质研究。

We also successfully isolated and determined the partial amino acid sequence of ECP 45-2, a carrot embryogenic cell protein.

最后本论文还首次成功地分离和测定了ECP45-2 N-末端和中央部分氨基酸序列。

Protein hydrolysate was abstracted from anchovy Engraulis japonicus using an enzymatic method, and its amino acid composition and in vivo anti-hyperlipidemia action were investigated.

采用化学分析、氨基酸组成分析及动物体内实验等方法，进行了鳀鱼蛋白水解物的一般成分、氨基酸组成和抗高血脂作用研究。

Irradiation at dose lower than 2.0kGy have no significant effects on sensory qualities, content of crude protein and amino acid （p〉 0.05）, and decrease 2 - 3 log of microbial in the mixture blanched peanut and celery and above 6 log of pathogens of Listeria innocua and Salmonella enteritidis inoculated.

值分别为0.284和0.296kGy，2.0kGy以下的辐照剂量对其感官品质和蛋白质的营养品质没有明显的影响。2.0kGy剂量能使冷食菜中的微生物降低10^-2～10^-3，使接种于其中的致病菌降低10^-6以上，能有效地提高芹菜花生冷食菜的卫生安全。

The range of IBD is between 0 and 1,successively corresponding to complete balance and enure imbalance for the amino acid profile of a sample.

当样品中氨基酸完全平衡时，IBD取值为零；而当其氨基酸平衡最差时。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。