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Experimental results indicate that the optical purity of the chiral cyanohydrin obtained by enzymatic reaction is quite high, and it is an excellent starting material for the stereoselective synthesis of the chiral amino alcohol compounds.

实验结果表明，醇腈酶催化合成的手性氰醇光学纯度较高，是合成手性氨基醇化合物的优秀原料，并且在随后的化学转化过程中各步反应产物均很好地保留了光学纯度。

All compounds are synthesized starting from the acylation reaction of gallic acid with L-glutamine to form the basic scaffold, followed by the cyclic reaction in acetic anhydride and the key intermediate cyclic anhydride (compound 4) was obtained. The intermediate compound is condensed with different amino acids or primary amines, and produces the target compounds.

本研究以L－谷氨酸为基本骨架，与甲醚化保护的没食子酸缩合后，经过酰化、环合反应得到关键中间体环状酸酐（化合物4），再经胺解反应合成目标化合物，其化学结构经过红外光谱、电喷雾质谱和核磁共振谱（氢谱、碳谱、碳氢异核多键相关谱）确证。

This paper reviews the recent progress in the synthesis of cyclopropane amino acids.

本文综述了合成环丙烷氨基酸类化合物的近期研究进展。

General approaches involve the nucleophilic cycloalkylation, carbenoids addition of certain amino acid derivatives and derivatization from simple cyclopropane compounds.

制备方法包括对简单氨基酸衍生物的亲核环烷基化、卡宾加成以及简单环丙烷化合物的衍生化合成等。

One of these amino acids, cysteine, gives the glutathione its antioxidant and detoxifying properties.

其中的一种氨基酸-半胱氨酸赋予谷胱甘肽的抗氧化和解毒特性。

In a recent eight-week trial, 27 people were given increasing doses of the amino acid, N-acetyl cysteine,...

在最近的8个星期的审讯， 27人分别给予增加剂量的氨基酸， N -乙酰半胱氨酸

The amino acid histidine and cysteine are the most frequently occurring ligands of zinc in physiological processes.

但在测定生物活体内的游离Zn~(2+)的浓度方面仍存在一定的困难。

C refers to cysteine and X is any amino acid.

在临床应用方面，已有多种基因工程的细胞因子药物得以成功应用。

The amino acid contents in the cystine motherliquid powder were determined and compared with some diet components used in livestock industry.

对胱氨酸母液粉的氨基酸含量进行了测定分析，并与畜牧业中常用的部分饲料原料进行了比较。

An amino acid containing sulfur that is found in most proteins; oxidizes on exposure to air to form cystine .

多数蛋白质中的含有硫的氨基酸，在空气中氧化后形成胱氨酸。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新