哌嗪

Aim To study the synthesis and antidepressant activities of aryl alkanol piperazine derivatives.

目的 研究芳烷醇哌嗪类化合物的合成及抗抑郁活性。

Aim To design and synthesize 4-substituted piperazinylphenyloxazolidinone-indole carboxylate hybrids, and evaluate their antibacterial activities in vitro primarily.

目的 设计并合成一类新型的4-哌嗪苯基恶唑烷酮－吲哚羧酸酯杂合物，初步评价其体外抗菌活性。

The result indicate that it can effectively catalyze Knoevenagel condensation and can be reused at least two times.

结果表明，聚乙二醇4000支持的哌嗪对Knoevenagel缩合反应具有较好的催化性能，而且可以循环使用多次。

Based on the predecessor study on deamination of industrial ethylenediamine on normal pressure and on the basic principles of reaction engineering,the method,criteria and parameter of amplification is determined.

根据以乙二胺为原料常压气固相催化合成哌嗪的小试研究结果，依据反应工程学的基本原理，确定了放大方法、放大准则和放大参数。

A kind of new diamine monomer of modified polyimide with piperazine was synthesized, which has been used in the synthesis of modified polyimide by ternary copolymerization .

合成一种含哌嗪的芳香族二胺单体，将其用于聚酰亚胺的三元共聚中，并制成改性聚酰亚胺膜。

This two-step procedure provided 55 out of 76 dipeptide aldehydes, and 26 were with purity up to 80%.

3，6-二取代-5，6-不饱和-2-哌嗪酮化合物库的制备。

In this thesis, for the first time, we attempted at preparing a library of 20×20 dipeptide aldehydes based on 20 natural amino acids by parallel solution phase method.

本论文以20个天然氨基酸为原料，利用液相平行合成技术进行了一个20×20的二肽醛化合物库的系统合成的尝试，并进一步合成了3，6-二取代-5，6-不饱和-2-哌嗪酮化合物库。

Furthermore, the important fragment which is composed of pentenyl cinnamic acid and D-Tyrosine, and the ester which is composed of L-N-methylated phenyl amino acid and diketopiprazine was synthesized with considerable yield The conjugation of the new DOPA analogue into the peptide in the total synthesis of Pepticinnamin E was investigatited

另外，本文作者还进一步合成了高收率的戊烯基肉桂酸衍生物与D-酪氨酸的缩合片段及L-N-甲基苯丙氨酸与哌嗪二酮的酯两个重要的结构组成部分；对新多巴衍生物片段嵌入肽链中的工作亦进行了有益的尝试。

Objective: To explore the effects of 1-4 -[2 -( 1- ethyl - 2,3 – dioxopiperazine-4- carboxamido ethyl] -phenylsulfonyl -3 -cyclohexyl urea on the fasting blood glucose and the blood lipemia in the streptozotocin -induced diabetic once and the glucose uptake in SMMC7721 cells.

目的：研究观察二氧代哌嗪苯磺酰环己脉对链脲佐菌素诱导的2型糖尿病小鼠血糖血脂的影响以及刺激SMMC7721细胞对3H-2-脱氧葡萄糖吸收影响。

METHODS In situ perfusation model was used to evaluate the absorption of Levodropropizine. The phenol red and levodropropizine in the perfusation were detected by HPLC at the same time.

采用大鼠在体小肠循环灌注模型，用HPLC同时测定灌注液中酚红和左羟丙哌嗪的含量。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。