查询词典 benzyl

Neomycin on ammonia acid can lead to vitamin B12 deficiency; phenytoin, methotrexate, B ammonia pyrimidine, methyl benzyl ammonium pyrimidine and Triamterene, etc. can cause folic acid deficiency; mercaptopurine, 5 - fluoro-piperidine urine density, Ara-C, etc. can interfere with nucleic acid synthesis, these drugs can lead to megaloblastic anemia.

新霉素、对氨水杨酸可导致维生素B12缺乏；苯妥英钠、甲氨蝶呤、乙氨嘧啶、甲基苄氨嘧啶及氨苯蝶啶等可引起叶酸缺乏；巯嘌呤、5--氟尿密啶、阿糖胞苷等能够干扰核酸的合成，这些药物都可导致巨幼红细胞性贫血。

A novel biodegradable copolymer of poly and poly (γ-benzyl-L-glutamate) was successfully synthesized. Under appropriate conditions, the PBLG initiates the ring-opening polymerization of L-lactide to produce block copolymer, by using low toxicity stannous octoate as catalyst. The optimal reaction conditions were determined as follows; the catalytic agent: PBLG=1:1, the temperature is 120℃, the reaction time is 6h.

以L-丙交酯为原料，在催化剂辛酸锡酯Sn2的作用下，利用聚的活性端氨基引发LLA进行开环聚合，合成了聚L-丙交酯与聚的共聚物，对反应条件的各项因素进行了讨论，确定了最佳反应条件是：m：m=1：1；反应温度120℃；反应时间6h。

The Suzuki reaction, the coupling of organoborate compounds with organic electrophiles catalyzed by Palladium complexes, is a valuable Csp2-Csp bond forming reaction. The reaction has been drawing increased attention in that the reaction permit the use of organoboron compounds that are thermally stable and inert to water and oxygen.In this section microwave promoted Suzuki reaction of phenylboronic acid with benzyl halides catalyzed by Pd(PPh3)2Cl2 DMF/H2O(v/v=10 : 2) was first reported.

第四章：微波辐射下Pd配合物催化端烯与芳卤偶联反应研究本章中我们在微波辐射条件下，研究了PdclZ(P Ph3)：催化端烯与芳卤的偶联反应，合成出了七种乙烯基化合物；并分别考察了微波辐射功率、辐射时间、原料配比、和PTc等因素对反应的影响，优选出了较佳的反应条件，并根据文献及实验结果，讨论了可能的反应机理。

The new oxalamide bridging ligands N, N'-bis (4-hydroxy-3-methoxy-benzyl) oxalamide (H4LB) was designed and synthesized.

设计合成一种新型对称的草酰胺桥联配体：N，N'-二（4-羟基－3-甲氧基苯甲基）草酰胺配体(H4LB)。

Four phenylalanine derivatives were synthesized with this approach. The condition of the condensation reaction was optimized. The side reaction of the Curtius reaction was studied and a urine by-product was isolated and characterized.b. Through the detailed study of the behavior of various N-acetyl phenylalanine methyl esters under the condition of the Bischler-Napieralski reaction, it was found for the first time that the formation of benzyl oxazole derivatives was a competitive approach with the normal B-N reaction.

一、基于Bischler-Napieralski反应设计了以苯丙氨酸衍生物为原料的路线，在这条路线的研究中，主要取得了以下结果：、建立了一条以芳香醛和丙二酸单甲酯为原料，通过缩合、氢化、Curtius等反应制备苯丙氨酸甲酯的通用合成路线，对其中的缩合反应条件及Curtius反应中的副反应进行了深入的研究，利用这条路线合成了四个芳环取代的苯丙氨酸单甲酯衍生物。

The side reaction of the Curtius reaction was studied and a urine by-product was isolated and characterized.b. Through the detailed study of the behavior of various N-acetyl phenylalanine methyl esters under the condition of the Bischler-Napieralski reaction, it was found for the first time that the formation of benzyl oxazole derivatives was a competitive approach with the normal B-N reaction. A convincing mechanism was suggested and a rule governing the reaction was summarized.c.

一、基于Bischler-Napieralski反应设计了以苯丙氨酸衍生物为原料的路线，在这条路线的研究中，主要取得了以下结果：、建立了一条以芳香醛和丙二酸单甲酯为原料，通过缩合、氢化、Curtius等反应制备苯丙氨酸甲酯的通用合成路线，对其中的缩合反应条件及Curtius反应中的副反应进行了深入的研究，利用这条路线合成了四个芳环取代的苯丙氨酸单甲酯衍生物。

Benzyl isothiocyanate and phenethyl isothiocyanate induced apoptosis of DU-145 cells which also were confirmed by DAPI staining and DNA gel electrophoresis.

除此之外，苯甲基异硫氰酸酯和苯乙基异硫氰酸酯也会造成人类前列腺癌细胞株DU-145粒线体膜电位的改变，活性氧化物质和钙离子的释放以及造成DNA的损伤。

Western blotting show that benzyl isothiocyanate and phenethyl isothiocyanate treatment gradually decreased the level of anti-apoptotic proteins, but increased the level of pro-apoptotic proteins.

接著，由西方点墨法的结果发现苯甲基异硫氰酸酯和苯乙基异硫氰酸酯会造成人类前列腺癌细胞株DU-145凋亡蛋白的增加和Caspase活性的上升。

Besides, benzyl isothiocyanate and phenethyl isothiocyanate also decreased the levels of mitochondria membrane potential, induced reactive oxygen species and calcium ion production in examined DU-145 cells.

由结果显示，苯甲基异硫氰酸酯和苯乙基异硫氰酸酯确实会造成人类前列腺癌细胞株DU-145细胞周期停滞以及诱导细胞凋亡的产生。

Aromatic constituents of Huangdan Oolong tea were analysed with GC and MS and were compared in different green-making humid conditions.The major aromatic constituents of Huangdan Oolong tea were nerolidol,α-farnesene, linalool and its oxide, geraniol, pheny lacetal dehyde, indole, cis-jasmine lactone β-ionone cis-jasmone, benzyl acetate and so on.At the same temperature,the content of aromatic constituents were different, the aromatic quality in the 75% humid condition was better,which was more fragrant and kept longer.

用GC/MS法分析了黄旦品种乌龙茶的香气组分，并对不同湿度做青环境条件下生产的乌龙茶香气组分进行比较分析表明：黄旦乌龙茶主要香气成分为橙花叔醇、α-法呢烯、芳樟醇及其氧化物、香叶醇、苯乙醛、吲哚、顺-茉莉内酯、β-紫罗酮＋顺-茉莉酮、乙酸苄酯等；在相同温度（23℃），不同湿度做青环境生产的黄旦乌龙茶香气主要特征成分含量和精油总量各不相同，且香气品质以做青环境相对湿度75％为好，香气高且持久。

Now, however, all children continue in "comprehensive" schools, and the eleven-plus determines which courses of study the child will follow.

然而现在，所有的孩子都要在综合学校继续学习，所以这次考试只是决定他们将要学习哪些课程。

Cultivatable land , and led to a general recognition that development must not be carried at the cost of agriculture .

城区的迅速扩大在很多情况下侵占了宝贵的可耕地，使人们普遍认识到发展不能以牺牲农业为代价。