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磺酰基
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  sulfonyl
     The Pyrolysis of Perfluoro-(2, 5-dimethyl-3, 6-dioxa-8-fluoro Sulfonyl Octanoyl Fluoride) in Solvents
     全氟(2,5—二甲基—3,6—二氧杂—8—氟磺酰基辛酰氟)在溶剂中的裂解
短句来源
     SYNTHESIS OF SOME NOVEL N ARYL(ALKYL) SULFONYL N′ [1 NITRILE (CYCLO)ALKYL] UREAS AND THEIR FUNGICIDAL ACTIVITY
     N-芳(烷)磺酰基-N′-[1-氰(环)烷基]脲的合成与杀菌活性
短句来源
     Dansyl monomer N_[2_[[[5_(N,N_dimethylamino)_1_naphthalenyl]sulfonyl]amino]ethyl]_2_propenamide (DANSAEP) and pyrenyl monomer N_(1_pyrenylmethyl)methacrylamide (PyMA) were prepared as fluorescent labels.
     为了考察聚电解质溶剂化层的变化 ,合成了发色团分别为 5_(N ,N_二甲胺基 )_1_萘磺酰基 (dansyl)和芘 (pyrenyl)基的两种单体 .
短句来源
     STUDIES ON ANTIMALARIALS Ⅵ. SYNTHESIS AND ANTIMALARIAL ACTIVITIES OF SOME 2,4-DIAMINO-6-SUBSTITUTED AMINO SULFONYL QUINAZOLINE DERIVATIVES
     疟疾防治药物的研究——Ⅵ.2,4-二氨基-6-取代氨基-磺酰基喹唑啉衍生物的合成及其抗疟作用
短句来源
     Analysis of Organometallic Compounds XII. Reversed-Phase High Performance Liquid Chromatography of Sulfonyl, Carbonyl and Pyrazolyl Substituted Ferrocene Derivatives
     金属有机化合物的分析Ⅻ——磺酰基、羰基、吡唑基二茂铁化合物的反相高效液相色谱
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  “磺酰基”译为未确定词的双语例句
     Synthesis of the Perfluorobis(11-fluorosulfonyl-2,5,8-trimethyl-3,6,9-trioxaundecanoyl) Peroxide
     全氟二(2,5,8-三甲基-11-氟磺酰基-3,6,9-三氧杂十一酰基)过氧化物的合成
短句来源
     The Synthesis and Characterization of 1-Arysulfonyl-3-N-(β-D-acetylgalactopyranose-1-yl)-5-fluorouracil
     1-芳磺酰基-3-N-(β-D-乙酰基吡喃半乳糖-1-基)-5-氟脲嘧啶的合成和表征(英文)
短句来源
     Tenoxicam was synthesized from methyl 3-(chlorosulfonyl)-2-thiophenecarboxylate and glycine methyl ester hydrochloride by condensation, cyclization and N-methylation with (CH3)2SO4 to give 4-hydroxy-2-methyl-2H-thieno [2,3-e]-1,2-thiazine-3-carboxamide 1,1-dioxide followed by condensation with 2-pyridinamine in 45% overall yield.
     3-氯磺酰基-2-噻吩甲酸甲酯和甘氨酸甲酯盐酸盐经缩合、闭环、与硫酸二甲酯进行N-甲基化得到4-羟基-2-甲基-2H-噻吩并[2,3-e]-1,2-噻嗪-3-甲酸甲酯1,1-二氧化物,再和2-氨基吡啶缩合得到替诺昔康,总收率接近45%。
短句来源
     Synthesis and Biological Activity of 1-Sulfonyl-3,5-diamino-1H-Pyrazole Derivatives
     1-磺酰基-3,5-二氨基-1H-吡唑-4-腈的合成及其生物活性
短句来源
     Synthesis of 4-(2-N,N-dimethylamino-ethyl) sulfonyl-phenyl Hydrazine
     4-(2-N,N-二甲氨基-乙基)磺酰基-苯肼的合成
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  相似匹配句对
     Synthesis of2-chlorosulfonylbenzoyl chloride
     2-氯磺酰基苯甲酰氯的合成
短句来源
     Synthesis of 5-(N-substituted-amino)sulfonyl-1-naphthyl-amine
     5-(N-取代氨基)磺酰基-1-萘胺的合成
短句来源
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  sulfonyl
Synthesis and evaluation of 1-benzhydryl-sulfonyl-piperazine derivatives as inhibitors of MDA-MB-231 human breast cancer cell pr
      
Lack of cross-reactivity with a series of sulfonyl-/arylurea derivatives and triazines makes it possible to recommend the EIA systems developed for chlorsulfuron determination in the environment.
      
Solvation bifunctional catalysis of the hydrolysis of sulfonyl chlorides by hydration complexes of 2-propanol: influence of the
      
The sulfonyl chlorides are hydrolyzed via two pathways: one of them involves a water dimer as a bifunctional catalyst along with a water molecule as a nucleophile, and the other involves an alcohol hydrate.
      
Solvation bifunctional catalysis of the Hydrolysis of Sulfonyl Chlorides by hydration complexes of 2-Propanol: influence of the
      
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  aminobenzenesulfonyl
For example, N1-(4-aminobenzenesulfonyl)-5-azaskatole (18; Ki = 41 nM) displayed an affinity comparable to N1-(4-aminobenzenesulfonyl)skatole.
      
Synthesis of S-[2-(4-Aminobenzenesulfonyl)ethyl] and S-[2-(3-Amino-4-methoxybenzenesulfonyl)ethyl] Thiosulfonates
      
Rhodium(III), palladium(II) and platinum(II) complexes of Bis(o-aminobenzenesulfonyl)ethylenediamine
      
10-(p-Aminobenzenesulfonyl)phenothiazine was alkylated.
      
Crystal and molecular structure of a silver complex ofo-aminobenzenesulfonyl glycine
      
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4-Methyl-5-ethyl-2-thiouracil reacts with ethyl bromide in alcoholic solution in presence of sodium ethylate,forming 2-ethylmercapto-4-methyl-5-ethyl-uracil(m. p.141°),from which 2-ethylmercapto-4-methyl-5-ethyl-6-chloropyrimidine,boiling at 148-150° at 13 mm.,at 164-166° at 17 mm.,or at 180-185° at 25 mm.,is prepared according to the directions given by Johnson and Bailey.This chloro- pyrimidine reacts with sodium methylate in methyl alcohol forming 2-ethyl- mercapto-4-methyl-5-ethyl-6-methoxypyrimidine,boiling...

4-Methyl-5-ethyl-2-thiouracil reacts with ethyl bromide in alcoholic solution in presence of sodium ethylate,forming 2-ethylmercapto-4-methyl-5-ethyl-uracil(m. p.141°),from which 2-ethylmercapto-4-methyl-5-ethyl-6-chloropyrimidine,boiling at 148-150° at 13 mm.,at 164-166° at 17 mm.,or at 180-185° at 25 mm.,is prepared according to the directions given by Johnson and Bailey.This chloro- pyrimidine reacts with sodium methylate in methyl alcohol forming 2-ethyl- mercapto-4-methyl-5-ethyl-6-methoxypyrimidine,boiling at 152-154° at 11 mm., at 156-160° at 16.5 mm.,or at 162° at 22 mm.,and with sodium ethylate in ethyl alcohol forming 2-ethylmercapto-4-methyl-5-ethyl-6-ethoxypyrimidide,boiling at 139-140° at 5 mm.or 142-145° at 7 mm. 2-Ethylmercapto-4-methyl-5-ethyl-6-methoxypyrimidine interacts with chlorine with formation of 2-ethylsulfonyl-4-methyl-5-ethyl-6-methoxypyrimidine,m.p.45- 47°,in a yield of 81% of the theory.2-Ethylmercapto-4-methyl-5-ethyl-6-ethoxy- pyrimidine interacts with chlorine with formation of 2-ethylsulfonyl-4-methyl-5- ethyl-6-ethoxypyrimidine,boiling at 202-205° at 5 mm.or at 212-215° at 10 mm.,in a yield of 91% of the theory.2-Ethyl-mercapto-4-methyl-5-ethyl-6- chloro-pyrimidine interacts with chlorine with formation of 2-ethylsulfonyl-4- methyl-5-ethyl-6-chloro-pyrimidine,m.p.74-75.5°,in a nearly quantitative yield. 2-Ethylsulfonyl-4-methyl-5-ethyl-6-chloro-pyrimidine reacts with sodium methy- late in methyl alcohol,producing 4-methyl-5-ethyl-2,6-dimethoxypyrimidine,boil- ing at 123° at 15 mm.or 113-115° at 11 mm.;while 2-ethylsulfonyl-4-methyl- 5-ethyl-6-methoxypyrimidine reacts with sodium methylate in methyl alcohol, producing the same pyrimidine-dimethyl ether,boiling at 123° at 17 mm.2- Ethylsulfonyl-4-methyl-5-ethyl-6-ethoxy-pyrimidine reacts with sodium ethylate in ethyl alcohol in an analogous manner to form 4-methyl-5-ethyl-2,6-diethoxypyri- midine,which boils at 130° at 8 mm.4-Methyl-5-ethyl-6-methoxy-uracil,m.p. 194-195°,is produced by boiling 2-ethylsulfonyl-4-methyl-5-ethyl-6-methoxypyri- midine with 10% sodium hydroxide solution.Likewise,4-methyl-5-ethyl-6-ethoxy- uracil,m.p.179-180°,is produced by boiling 2-ethylsulfonyl-4-methyl-5-ethyl- 6-ethoxypyrimidine with 10% sodium hydroxide solution.The action of alcoho- lic ammonia upon 2-ethylsulfonyl-4-methyl-5-ethyl-6-chloropyrimidine at 100—105° gives 2-ethylsulfonyl-4-methyl-5-ethyl-6-aminopyrimidine,melting at 108—109°. 4-Methyl-5-ethyl-cytosine,m.p.296-298° or m.p.294°,is formed (i) by boiling 2-ethylsulfonyl-4-methyl-5-ethyl-6-amino-pyrimidine with 6 N hydrochloric acid and (ii) by heating 4-methyl-5-ethyl-6-methoxy-uracil with alcoholic am- monia at 120-140° for 18 hours.Thus,there are two new routes for synthesiz- ing 4-methyl-5-ethyl-cytosine,starting from 2-ethylmercapto-4-methyl-5-ethyl- uracil.Although these new methods involve one or two steps more than the old method described by Johnson and Bailey,who heated 2-ethylmercapto-4-me- thyl-5-ethyl-6-chloropyrimidine with alcoholic ammonia,producing the correspond- ing mercaptoaminopyrimidine,from which the ethylmercapto-group was removed by boiling with hydrochloric acid,they appear to be unique.

(1)2-乙硫醇基-4-甲基-5-乙基-6-氯代嘧啶和醇钠在醇溶液中反应,则生成它相应的乙硫醇-嘧啶-醚类。(2)2-乙硫醇-嘧啶类有下列结构:式中 X 为卤素或烷氧基。它很容易和氯互相作用,形成嘧啶一砜。(3)当2-乙磺醯-嘧啶类和醇钠及碱作用时,则嘧啶中的乙磺酰基在所有的情况下都相似于一个易于被烷氧基和羟基所置换的卤原子。然而氨和氯-乙磺酰-嘧啶反应时,则氯原子为氨基取代,而乙磺酰基仍然是不作用的。(4)叙述了两种新的合成4-甲基-5-乙基-6-氨基-2-氧-嘧啶的方法。

The chemistry of pentomethyloses was briefly reviewed from preparative point of view.

本文提出了一合成2,3-内醚-5-去羟戊糖烷基甙的途径;并报告了合成2,3-内醚-5-去羟-α-L-来苏糖甲基甙的结果。合成包括以下的步骤:L-阿拉伯糖→α-和β-L-阿拉伯糖甲基呋喃甙(Ⅶ)→2,3,5-三-O-对甲苯磺酰基-α-L-阿拉伯糖甲基呋喃甙(Ⅷ)→2,3-二-O-对甲苯磺酰基-5-碘代-5-去羟-α-L-阿拉伯糖甲基呋喃甙(Ⅸ)→2,3-二-O-对甲苯磺酰基-5-去羟-α-L-阿拉伯糖甲基味喃甙(Ⅹ)→2,3-内醚-5-去羟-α-L-来苏糖甲基呋喃甙(Ⅺ)。自 L-阿拉伯糖计算,总产率是20.8%。

The title compound was synthesized from D-xylose.Methyl α-and β-D-xylofuranoside mixture(Ⅱ),prepared according to Levene et al.was treated with toluene-p-sulphonyl chloride inpyridine first at 0℃ and then at room temperature for four days,followed by usual procedureof isolation and fractional crystallization from alcohol to give 45.1% yield of crystalline methyl2,3,5-tri-O-toluene-p-sulphonyl-β-D-xylofuranoside(Ⅲ),m.p.131—132℃,[α]_D~(24.5)=-31.5°(chloroform,c=1.00,l=2 dm.).In order to obtain(Ⅲ)in crystalline...

The title compound was synthesized from D-xylose.Methyl α-and β-D-xylofuranoside mixture(Ⅱ),prepared according to Levene et al.was treated with toluene-p-sulphonyl chloride inpyridine first at 0℃ and then at room temperature for four days,followed by usual procedureof isolation and fractional crystallization from alcohol to give 45.1% yield of crystalline methyl2,3,5-tri-O-toluene-p-sulphonyl-β-D-xylofuranoside(Ⅲ),m.p.131—132℃,[α]_D~(24.5)=-31.5°(chloroform,c=1.00,l=2 dm.).In order to obtain(Ⅲ)in crystalline state,the methyl D-xylofuranoside mixture should be distilled under a vacuum not below 0.05 mm.Methyl β-D-xylopyranoside(Ⅷ)was similarly converted into methyl 2,3,4-tri-O-toluene-p-sulphonyl-β-D-xylopyranoside(Ⅸ),m.p.138—139℃,[α]_D~24=-37°(chloroform,c=0.50,l=2 dm.)with a yield of 81%.These two tritoluene-p-sulphonyl esters showed a mixed melting pointof 120—123℃.On the other hand,the authentic methyl 2-O-toluene-p-sulphonyl-β-D-xylofura-noside obtained by hydrolysis of the crystalline methyl 2-O-toluene-p-sulphonyl-3,5-O-isopropyli-dene-β-D-xylofuranoside as reported in Part Ⅳ on similar treatment gave rise to a tritoluene-p-sulphonyl ester identical in every respect with(Ⅲ),and so established the anomeric configu-ration of the latter.(Ⅲ)was caused to react with sodium iodide in acetone at 100℃(Oldham-Rutherfordreaction)for eight hours to give 97% yield of methyl 2,3-di-O-toluene-p-sulphonyl-5-deoxy-5-iodo-β-D-xylofuranoside(Ⅳ),m.p.105—106℃,[α]_D~(23.5)=-55°(chloroform,c=1.00,l=2dm.),which was in turn hydrogenated in the presence of Raney nickel to yield the syrupy methyl2,3-di-O-toluene-p-sulphonyl-β-D-xylomethyloside(Ⅴ).Finally,(Ⅴ)was treated with sodiummethoxide in chloroform at 0℃ and methyl 2,3-anhydro-β-D-ribomethyloside was obtained as acolorless,mobile liquid,b.p.46—48℃/1—2 mm,[α]_D~24=-113.5°(chloroform,c=0.52,l=2 dm.).The overall yield from D-xylose was 18%.The structure of the anhydro sugar wasdeduced from existing evidence.

自木糖经过五步反应合成了2,3-内醚-5-去羟-β-D-核糖甲基甙(Ⅵ)。这五步反应是:D-木糖(Ⅰ)→D-木糖甲基呋喃甙(Ⅱ,α-和β-端基差向异构体混合物)→2,3,5-三-O-对甲苯磺酰基-β-D-木糖甲基呋喃甙(Ⅲ)→2,3-二-O-对甲苯磺酰基-5-去羟-5-碘代-β-D-木糖甲基呋喃甙(Ⅳ)→2,3-二-O-对甲苯磺酰基-5-去羟-β-D-木糖甲基甙(Ⅴ)→2,3-内醚-5-去羟-β-D-核糖甲基甙(Ⅵ)。总产率是18%。将已知的结晶的2-O-对甲苯磺酰基-β-D-木糖甲基呋喃甙(Ⅶ)进行对甲苯磺酰化,得到与上述完全相同的Ⅲ,这样就证明了Ⅲ的端基的构型。同时,也从β-D-木糖甲基吡喃甙(Ⅷ)制备了2,3,4-三-O-对甲苯磺酰基-β-D-木糖甲基吡喃甙(Ⅸ)。根据现有的知识肯定了合成的内醚糖的结构。

 
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