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h-tetrazole     
相关语句
  h-四唑
     Among tetrazole eight dimers, there are two 1H-tetrazole dimers, three 2H-tetrazole dimers and three hetero dimers of 1H-tetrazole and 2H-tetrazole.
     计算求得的八种1H-和2H-四哗二聚体中,1H-四唑二聚体两种,2H-四唑二聚体三种,1H-和2H-四唑混合二聚体三种。
短句来源
  h-四氮唑
     Synthesis of N-cyclohexyl-5-(4'-chlorobutyl)-1H-tetrazole as an Important Intermediate of Platelet Aggregation Inhibitor Drugs
     血小板阻聚药物中间体N-环己基-5-氯丁基-1H-四氮唑的合成(英文)
短句来源
     In order to relieve the stimulation to the gastrointestinal tract of Oxaprozine (a Nonsteroidal Antiinflammatory Drug , NSIAD) , this paper was based on the bioisosterism , the carboxyl in Oxaprozine is substituted by tetrazole group. a new compound 5-[(4,5-diphenyl-1,3-oxazol-2-yl) methyl]-1H-tetrazole was synthesized by utilizing microwave radiation and the reaction condition has been optimized.
     为避免噁丙嗪的副作用,设计将噁丙嗪分子中的羧基用其生物电子等排体四氮唑基代替,得到了新的非甾体抗炎药5-[(4,5-二苯基-1,3-噁唑-2-基)甲基]-1H-四氮唑
  h-四氮唑
     A simple method of synthesis for 1H-tetrazole
     简便合成1H-四氮唑
短句来源
  “h-tetrazole”译为未确定词的双语例句
     Synthesis of 5-[1-Aryl-pyrrol-2-yl]-1H-tetrazole
     5-(1-芳基-1-吡咯-2-基)-1氢-四唑类化合物的合成与表征
短句来源
     The nitramino group in 5 - nitramino - 1H - tetrazole is co - planar to the ring due to the hydrogen bonding between 0(10) and H(11) , whereas in others the nitramino groups are perpendicular to the ring planes.
     5-硝氨-1H四唑分子内氢键使硝氨基与环共面; 其余标题物中硝氨基与环垂直.
短句来源
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  h-tetrazole
Selective protection against AMPA- and kainate-evoked neurotoxicity by (3S,4aR,6R,8aR)-6-[2-(1(2)H-tetrazole-5-yl)ethyl]decahydr
      
Extended NMR Study of Spin-Crossover Compounds [Fe(1-alkyl-1H-tetrazole)6](BF4)2 and Their ZnII Analogs
      
Synthesis and crystal structure of 2-trifluoromethyl-1-[(2'-1H-tetrazole-5-yl-biphenyl-4-yl) methyl]benzimidazole
      
The crystal structure of 5-methyl-1-(octahydro-1-iodo-1H-1-inden-4-yl)-1H-tetrazole
      
The N-terminal tyrosine peptide resin is then phosphorylated with di-t-butylN,N-diethylphosphoramidite/1H-tetrazole and the intermediate di-t-butyl phosphite triester is oxidised by treatment withm-chloroperoxybenzoic acid.
      
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A d-A-rich undecadeoxyribonucleotide,d-AAACCACCATA was synthesized byan improved phosphotriester method.The condensing reagent was TPSCl+1-H-Tetrazole(1:4)and the condensation reaction went to completion within 1-2 hours.Asolution of zinc bromide in nitromethane was used to remove 4,4′-dimethoxytritylgroups with little depurination.After removal of all protecting groups,the synthe-sized un-decadeoxyribonucleotide was purified by gel filtration on a Sephadex G-50column and its identity was confirmed by...

A d-A-rich undecadeoxyribonucleotide,d-AAACCACCATA was synthesized byan improved phosphotriester method.The condensing reagent was TPSCl+1-H-Tetrazole(1:4)and the condensation reaction went to completion within 1-2 hours.Asolution of zinc bromide in nitromethane was used to remove 4,4′-dimethoxytritylgroups with little depurination.After removal of all protecting groups,the synthe-sized un-decadeoxyribonucleotide was purified by gel filtration on a Sephadex G-50column and its identity was confirmed by nucleotide sequence analysis.

本文报道用改良三酯法合成富集d-A的脱氧十一核苷酸片段d-AAACCACCATA。以TPSCl+Te(1:4)为缩合剂进行片段缩合,反应在1~2小时内即可达到完全。Dmt基的脱除采用ZnBr_2/硝基甲烷溶液,几乎没有发现脱嘌呤副反应。最终的合成产物经核苷酸顺序分析证明具有正确的排列顺序。

Cefmenoxime was synthesized by a four-step method with overall yield of 35.80%. The conversion of 7-ACA to 7-ACT with 1-methyl-1H-tetrazole-5-thiol, the condensation of the side-chain 2-(2-chloroacetamidothiazol-4-yl)-(Z)-2-me- thoxyimino-acetic acid with DCC as condensing agent, the removal of the pro- tecting group with N-methyl-dithiocarbamate methyl amine salt and the purifi- cation of the crude product on sephadex IH-20 column were processed.

本文以7-ACA为原料制备了7-ACT,再以DCC为缩合剂与侧链2(2-氯乙酰氨基噻唑-4)-(Z)-2甲氧亚胺乙酸进行缩合,使用N-甲基二硫代氨基甲酸甲胺盐脱保护基,以葡聚糖凝胶LH-20精制合成了氨噻肟唑头孢菌素;总收率35.8%。产物经~1H核磁确证为顺式构型化合物。

Sulfhydryl group is modified either by P-chloromercuric benzoate or by dithiobis (2-nitrobenzoic acid). Amino group, phenolic hydroxyl group and imidazol group are modified by trinitrobenzene sulphonic acid, diazo-1-H-tetrazole and diethyl pyrocarbonate respectively. In certain range, the increase of light absorbance at specific wave length as well as the decrease of recombination activity of modified Mo-Fe protein are in accord with the enhancement of modification reagent amount used and the prolongation...

Sulfhydryl group is modified either by P-chloromercuric benzoate or by dithiobis (2-nitrobenzoic acid). Amino group, phenolic hydroxyl group and imidazol group are modified by trinitrobenzene sulphonic acid, diazo-1-H-tetrazole and diethyl pyrocarbonate respectively. In certain range, the increase of light absorbance at specific wave length as well as the decrease of recombination activity of modified Mo-Fe protein are in accord with the enhancement of modification reagent amount used and the prolongation of modification duration, yet beyond that range, the absorbance and activity remain unchanged. Owing to the insufficiency of sodium dithionite in the anaerobic process of gel filtration for removing excessive reagent, even the activity of normal MoFe protein for recombination is lowered by 24.2%; as for the modified protein the range of decrease of recombination activity varies from 23.4% to 41.4%.

用对氯汞苯甲酸或二巯基双二硝基苯甲酸修饰巯基。用三硝基苯磺酸、重氮四唑和焦碳酸二乙酯分别修饰氨基、酚式羟基和眯唑基。在一定范围内,被修饰钼铁蛋白在特征波长吸收值的上升和重组活性的下降与修饰剂用量的增加和时间的延长相一致,超过该范围后则光吸收和活性都保持不变。由于无氧凝胶过滤去除多余的修饰剂时未加连二亚硫酸钠,甚至正常钼铁蛋白的重组活性下降了24.2%,修饰后的铝铁蛋白活性下降范围为23.4~41.4%不等。

 
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