氨基甲酸乙酯

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。

Two kinds of ashless and non-phosphorus additives, hydroxyl-containing dithiocarbamate derivatives were prepared.

合成了2-乙羟基-吗啡啉二硫代氨基甲酸酯和2-乙羟基-二正丁胺基二硫代氨基甲酸酯两种添加剂。

In order to find biologically active urea compounds,seven new N-[5-(3-pyridyl)-1,3,4-thiadiazol-2-yl]-N'- urea derivatives were synthesized by the reaction of 2-amino-5-(3-pyridyl)-1,3,4-thiadiazole with aroylazides,which were prepared starting from carboxylic acids,ethyl chloroformate and sodium azide by one-pot procedure.

为了寻找高生物活性的脲类化合物，通过2-氨基-5-(3-吡啶基)-1，3，4-噻二唑与酰基叠氮化物反应，设计合成了7个新的N-[5-(3-吡啶基)-1，3，4-噻二唑-2-基]-N'-取代苯基脲，其中芳酰基叠氮化物是以芳酸、氯甲酸乙酯、叠氮化钠为起始原料采用&一锅法&所制得。

METHODS 5-amino-1-hydroxyethyl pyrazole-4-carboylic acid was synthesized through condensation of ethyl cyanoacetate and triethyl orthoformate followed by one-pot methodology of cyclization,hydolysis.

方法原甲酸三乙酯与氰乙酸乙酯缩合，然后和羟乙基肼经环合、水解等一锅法合成5-氨基吡唑-4-甲酸，然后在亚硫酸钠存在条件下加热脱羧得到5-氨基-1-羟乙基吡唑。

Bezaldehyde was used as protective agent in first method.S-Epichloeohydrin was aminated and acidulated to give(2S)-1-Amino-3-chloro-propanol Salts.The acetylation of (2S)-1-Amino-3-chloro-propanol by acetic anhydride produced the intermediate-N-[2--3-chloropropyl]acetamide.And then at 20℃,in the presence of lithium tert-butoxide,benzyl 3-fluoro-4-morpholinophenyl carbamate react with-N-[2--3-chloropropyl]acetamide to give linezolid in total yield of 43.6%.

路线一采用苯甲醛作保护剂，使S-环氧氯丙烷氨解、酸化生成S-1-氨基-3-氯-2-丙醇盐酸盐，然后经乙酰化反应后，生成中间体-N-[2-乙酰氧基-3-氯丙基]乙酰胺，再用N-(3-氟-4-吗啉苯基)氨基甲酸苄酯和中间体在催化剂叔丁醇锂存在下25℃反应生成利奈唑酮，总产率达到43.6%。

Structures of glycosyl ester of 13-cis-4-restinoic acid(5) and 6 were characterized by 1H NMR,13C NMR,IR and MS and confirmed to be β-configuration.

13-顺维甲酸与溴代-2，3，4，6-四-O-乙酰基-α-D-吡喃葡萄糖在4-二甲氨基吡啶催化下合成了13-顺维甲酸葡萄糖酯(5)，以二氧化锰为氧化剂，5经氧化成功地合成了新化合物13-顺-4-羰基维甲酸葡萄糖酯(6)。

Ethyl carbamate,a known genotoxic compound,is mainly found as a natural trace constituent in wine and other alcoholic beverages.

氨基甲酸乙酯(Ethyl Carbamate，EC)是一种基因致癌物，葡萄酒及其它酒精饮料中含有微量的EC。

METHODS: Rats in each group were anesthetized with intraperitoneal injection of ethyl carbamate at dosage of 1mg/kg; then in intestinal IR group and shenfu injection group rats' superior mesenteric artery was occluded with vascular clamp for 1 hour before 2-hour reperfusion,which was not conducted in blank control group.

各组大鼠给予氨基甲酸乙酯1 mg/kg腹腔注射麻醉，肠缺血再灌注组和参附注射液组用血管钳夹闭肠系膜上动脉1 h然后再灌注2 h，空白对照组不用血管钳夹闭肠系膜上动脉。

In metabolizing argine, there had no obvious difference among three strains and the control 3 1 DH. Thus, three selected strains had better characters of degrading argininc that they couldn"t over-degrade arginine to produce large numbers" precursors of carcinogenic ethyl carbamate as citrulline, etc.

分析表明，精氨酸分解代谢方面，三个菌株与对照31DH没有明显差异，由此说明，三个优选菌株精氨酸代谢特性良好，不会过多降解精氨酸、代谢产生瓜氨酸等前体物质，从而不会导致致癌物质——氨基甲酸乙酯的大量合成。

It's a quick-drying, zinc phosphate primer, based on long oil alkyd resin and urethane alkyd resin.

长油醇酸树脂和氨基甲酸乙酯醇酸树脂配制而成的快干磷酸锌底漆。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。