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This paper synthesizes the Cu(superscript 2+) schiff base complex of disproportionated rosin amine, and catalyzes urushiol oxypolymerization to polymer.

研究了歧化松香胺席夫碱-铜配合物的合成及其对漆酚氧化聚合反应的催化性能。

Rational reaction condition is that ratio of the Cu(superscript 2+) schiff base complex of disproportionated rosin amine is 3%, urushiol concentration is 68.8 g/L, the system of reaction reacts 36 h at 30℃ in alcohol dissolvent.

结果表明,氧化聚合反应的理想条件是以乙醇为溶剂,加入3%歧化松香胺席夫碱-铜配合物催化剂,漆酚浓度为0.0688g/ml,在30℃下反应36h后,漆酚聚合物的沉淀得率为51.3%。

The results confirmed the significant inhibitory effect of glycosylation on fibril formation, and showed that fibrils formed more easily when the residue 129 is valine.

结果发现醣化会大大的抑制自发性纤维形成,而且以含醣胜肽的129号残基为缬胺酸时,纤维的形成较容易。

Superparamagnetic iron oxide nanoparticles were coated with either Polyvinyl alcohol or Vinyl alcohol/vinyl amine copolymer and further functionalized with the fluorochromes Cy3.5 or Texas Red.

将超顺磁性三氧化二铁纳米颗粒用聚乙烯醇或乙烯醇/乙烯胺共聚物包被后,再用荧光染料Cy3.5或德克萨斯红染料进一步功能化。

The calcium was determined by xylenol orange-CTMAB-absolute ethyl alcohol complexation color in the gelatin.

以二甲酚橙—十六烷基三甲基溴化胺—无水乙醇络合显色体系测定了明胶中的钙。

Started from D-tyrosine, we obtained the tetramic acid 96 using Jouin reaction. The assembly of the second fragment 109 was stared from 1,4-butandiol,using asymmetric alkylation reaction developed by Oppolzer as a key step. Coupling of the tetramic acid 96 with 109 provided the key intermediate 110 according to Yoshii\'s procedure. After remove protective group and Sharpless epoxidation, we obtained the key intermediate 113. Its macrocyclization to form the final product is in progress.

本论文的第二章主要对Macrocidin A开展了合成工作,我们从D构型的酪氨酸出发,经过官能团转换;利用Jouin反应生成Tetramic acid 96,另外一个片断从1,4-丁二醇开始经过多步反应生成碘化物104,利用Oppolzer发展的手性樟脑磺酰胺为辅基参与的不对称烷基化反应,引入手性甲基,生成关键中间体109,接着通过Yoshii发展的方法连接96和109生成110,经过Sharpless不对称环氧化反应建立环氧化合物,然后脱去保护基得到关环前体113,分子内的Mitsunobu反应进行关大环反应正在进行之中。

Methods: Streptomycin and the derivatization reagent o-phthalaldehyde occur Amine Acetalization generating derivative product with UV absorption and determined the absorbance in special wave length, obtained streptomycin residues in samples then compare with high-performance liquid chromatography.

将试样与衍生化试剂邻苯二甲醛进行胺缩醛反应,即化学衍生处理,生成具有特定波长的紫外吸收的衍生产物,测定其吸光度,求出样品中链霉素残留量,并与高效液相色谱法比较。

A series of p-toluene sulfonylamido acetacylhydrazone derivatives were synthesized from p-toluenesulfonyl chloride which reacted with glycine to get the intermediate p-toluene sulfonylamido glycine, then through the esterification, hydrazinolysis to afford another intermediate p-toluene sulfonylamido acethydrazide, which condensed with different aldehydes to obtain the target compounds that were characterized by IR, 1H NMR, 13C NMR spectra and elemental analysis.

魏太保 ;冷艳丽;王永成;张建辉;张有明*摘要:以对甲苯磺酰氯为原料,通过与氨基乙酸反应得到中间体对甲苯磺酰氨基乙酸,再经酯化、肼解得到对甲苯磺酰氨基乙酰肼,然后与相应的醛缩合得一系列对甲苯磺酰胺基乙酰腙类化合物。其结构经元素分析, IR, 1H NMR和13C NMR确证。

However, there is no difference for NAT2 rapid and slow acetylator between two groups.

吃红烧鱼因素在NAT2的快速酶中,特别是在野生纯合型中直肠腺瘤复发的相对危险度有增高趋势,提示了NAT2〓4等位基因编码快酶型NAT,可能在红烧鱼产生的杂环胺类化合物中代谢中加速其N-乙酰基化代谢过程,从而加速其代谢为终致癌物而与肠粘膜上皮细胞的DNA产生加成物,损伤其遗传物质。

Nevertheless, Smoking could interact with wild type of NAT2 and increase the relative risk of rectal adenoma recurrence significantly. It is suggested that NAT2 might involve the metabolism of pre-carcinogen generating from tobacco and alter the susceptibility of cancer. Meanwhile, the NAT2〓4 alleles encode rapid acetylator of NAT2 would increase the risk of adenoma recurrence among those high-risk people with habit of fried fish intake.

吃红烧鱼因素在NAT2的快速酶中,特别是在野生纯合型中直肠腺瘤复发的相对危险度有增高趋势,提示了NAT2〓4等位基因编码快酶型NAT,可能在红烧鱼产生的杂环胺类化合物中代谢中加速其N-乙酰基化代谢过程,从而加速其代谢为终致癌物而与肠粘膜上皮细胞的DNA产生加成物,损伤其遗传物质。

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