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     Reagent for chemiluminescent immunoassay——A new synthetic route for 6-(N-(4-aminobutyl)-N-ethyl)amino-2,3-dihydro-1,4-phthalazinedione
     化学发光免疫分析试剂6-[N-(4-氨基丁基)-N-乙基]氨基-2,3-二氢-1,4-酞嗪二酮(ABEI)合成的新路线
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     A Facile Route for the Synthesis of 4β-Methyl-5α-cholestane
     一种合成4β-甲基-5α-胆甾烷的新路线(英文)
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     A New Synthetic Route for β-(3,4-Diaminophenyl)-Alanine Dihydrochloride
     合成β-(3,4-二氨基苯基)-α-氨基丙酸二盐酸盐的新路线
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     STUDIES ON THE SYNTHESIS OF BIOMARKERS Ⅹ Ⅱ. A New Route for the Synthesis of 4—Methylcholestanes
     生物标志化合物的合成研究 Ⅹ Ⅱ.4-甲基胆甾烷的合成新路线
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     A New Route for Synthesis of the New Anti-HBV Agent Entecavir
     抗乙肝新药Entecavir的合成新路线研究
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  “route for”译为未确定词的双语例句
     Synthesis of LiNi_(0.01)Co_(0.01)Mn_(1.98)O_(3.95)F_(0.05) by sol-gel route for lithium secondary battery and its electrochemical properties
     溶胶凝胶法制备LiNi_(0.01)Co_(0.01)Mn_(1.98)O_(3.95)F_(0.05)及其电化学性能
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     Electrochemical Properties and Synthesis of LiNi_(0.01)Co_(0.01)Mn_(1.98)O_4 by SAC Route for Lithium Secondary Battery
     SAC法制备LiNi_(0.01)Co_(0.01)Mn_(1.98)O_4及其电化学性能
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     New Route for Preparation of Layer-pillared Catalyst[Zn_2Al(OH)_2][SiW_(11)O_(39)Co(H_2O)]_(0.83)·4H_2O and Its Catalytic Activities for the Oxidation of Benzaldehyde Using H_2O_2 as Oxidant
     层柱催化剂[Zn_2Al(OH)_2][SiW_(11)O_(39)Co(H_2
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     The most favored route for undergoing only one intermediate phase is Li+In 4Sb 4→Li 1In 4Sb 4, 11Li+Li 1In 4Sb 4→Li 12Sb 4+4In;
     中间经历一个相的最可能反应过程为Li+In4 Sb4 →Li1 In4 Sb4 ,11Li +Li1 In4 Sb4 →Li1 2 Sb4+4In ;
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     Simple Route for Preparation of La(OH)_3 and La_2O_3 with Rod Morphology by Hydration of Its Bulk Oxide
     一种由氧化物水化制备棒状La(OH)_3和La_2O_3的简便方法
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     The route to reliability
     路由的可靠性
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     transport route;
     转运途径;
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     New route for epichlorohydrin.
     环氧氯丙烷工业新路线
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     Prevention and Processing for Route Blocking
     路由阻塞的预防和处理
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A CONVENIENT ROUTE FOR THE SYNTHESIS OF CIS-1-SUBSTITUTED 1,2,3,4,4a,5,11,11a-OCTAHYDRO-6H-PYRIDO[3,2-b]CARBAZOLES AND 4-SUBSTIT
      
These experiments show that surface functionalization of polyethylene films by blending SMA and then surface grafting of PEG is feasible, which suggest an effective and simple route for PE surface modification via blending and grafting.
      
The sol-gel process is analyzed as a promising route for the preparation of bioceramics in the presence of templates.
      
Seven-and eight-membered saturated fused rings zirconium and titanium metallocenes: A route for the synthesis of elastomeric pol
      
The main route for establishing a community is made by trophic links.
      
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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。

A series of β-aryloxyethyltrialkylammonium salts was prepared for anthelmintic tests. Phenols carrying various substituents on the benzene ring (o-CH_3, p-CH_3, p-C_6H_5, o-NO_2, p-NO_2, 2-CH_3-5-CH(CH_3)_2), on being refluxed with dimethylamino- or diethylaminoethyl chloride in acetone solutions in the presence of anhydrous potassium carbonate, formed the corresponding β-aryloxyethyldimethylamines or β-aryloxyethyldiethylamines. An alternative route for the synthesis of such compounds was the formation...

A series of β-aryloxyethyltrialkylammonium salts was prepared for anthelmintic tests. Phenols carrying various substituents on the benzene ring (o-CH_3, p-CH_3, p-C_6H_5, o-NO_2, p-NO_2, 2-CH_3-5-CH(CH_3)_2), on being refluxed with dimethylamino- or diethylaminoethyl chloride in acetone solutions in the presence of anhydrous potassium carbonate, formed the corresponding β-aryloxyethyldimethylamines or β-aryloxyethyldiethylamines. An alternative route for the synthesis of such compounds was the formation of β-aryloxyethyl bromide by the action of excess of ethylene bromide on the corresponding phenols, followed by the condensation of the bromides with dimethylamine or diethylaminc. The tertiary amines so prepared readily reacted with methyl iodide, benzyl bromide or p-nitrobenzyl bromide, forming the expected quaternary ammonium salts. β-(p-Nitrophenylmercapto)-ethyltrimethylammonium bromide was prepared by the reaction of β-(p-nitrophenylmercapto)-ethyl bromide with trimethylamine.

为了寄生虫病的实驗治疗,制备了一系列β-芳氧乙基季銨盐。带有各种不同取代基团的苯酚与二甲基或二乙基β-氯乙基胺在丙酮溶液中于无水碳酸鉀的作用下縮合,成为相应β-芳氧乙基二甲基或二乙基胺,后者也可由各該苯酚先与过量溴化乙烯縮合成1-芳氧基-2-溴乙烷,再与二甲胺或二乙胺作用制成。这些胺化合物再与碘甲烷、溴化苄或溴化对硝基苄共热,便成相应β-芳氧乙基季銨盐。对硝基苯基β-溴乙基硫醚与三甲胺縮合,生成对硝基苯巯乙基三甲基季銨盐。

It has long been known that melanomas contain the melanin pigment. The presence of the pigment in the melanotic tumor is due to the action of oxidases which catalyze the oxidation of tyrosine to melanin. Evans et al. reported that the biosynthesis of melanin from tyrosine may very probably pass through the precusors,5,6-dihydroxy-2,3-dihydro-indole-2-carboxylic acid (Ⅰ) and then 5, 6-dihydroxy-indole (Ⅱ) as shown by the scheme in the Chinese text.Compound (Ⅱ) had been synthesized by Beer. According to its properties,...

It has long been known that melanomas contain the melanin pigment. The presence of the pigment in the melanotic tumor is due to the action of oxidases which catalyze the oxidation of tyrosine to melanin. Evans et al. reported that the biosynthesis of melanin from tyrosine may very probably pass through the precusors,5,6-dihydroxy-2,3-dihydro-indole-2-carboxylic acid (Ⅰ) and then 5, 6-dihydroxy-indole (Ⅱ) as shown by the scheme in the Chinese text.Compound (Ⅱ) had been synthesized by Beer. According to its properties, this compound was believed to be the actual precusor of melania.This conclusion was supported by the biochemical work of Mason.It is also interesting to note, that the essential constituents of one of the anticancer Chinese drug, "Fan-mu-pieh" (番木鳖), are indole alka oids. Therefore, the preparation of indole com-pounds, especially [bis-(β-chloroethyl)-amino]-indole derivatives, would be a hopeful new route for the synthesis of effective drugs in the treatment of cancer especially melanomas.In the present investigation, 5-[bis-(β-chloroethyl)-amino]-indole-2-carboxylic acid (Ⅵa), 6-[bis-(β-chloroethyl)-amino]-indole-2-carboxylic acid (Ⅵb) and 7-[bis-(β-chloroethyl)-amino]-indole-2-carboxylic acid (Ⅵc), structurally related to the precusor Ⅰ of melanin were prepared. If these compounds should be decarboxylated in vivo, they would be converted to bis-(β-chloroethyl) amino-indoles, structually related to the other precusor Ⅱ of melanin.Compound Ⅵb was prepared by a 7-step synthesis from 2,4-dinitrobenzaldehyde (Ⅶ). The latter was converted to 2-methyl-4-(2'4'-dinitrobenzylidene)-5-azIactone (Ⅷ) and the azlactone was hydrolyzed to 2,4-dinitrophenyl pyruvic acid (Ⅸ), and subsequently transferred to its ethyl-ester (Ⅹ) by the usual way. 6-[Bis-(β-hydroxyethyl)-amino]-indole-2-carboxylic acid (XIV) was obtained either by reducing Ⅹ with sodium hydrosulphite or by hydrogenating it catalytically on palladium-carbon to the amino compound (XIII), and followed by dihydroxyethylation in dilute acetic acid with ethylene oxide. Compound XIV was chlorinated with phosphrous oxychloride and the chlorinated compound (XV) was hydrolyzed to final product Ⅵb with hydrochloric acid.Compounds Ⅵa and Ⅵc were prepared from the ethyl esters of the corresponding nitroindole-2-carboxylic acids (Ⅶa and Ⅶc) through reduction, hydroxyethylation, chlorination and hydrolysis as in the preparation of Ⅵb. The intermediates Ⅻa and Ⅻc were obtained from p-nitrophenyl-hydrazone and o-nitrophenylhydrazone of ethyl pyruvate Ⅺa and Ⅺb respectively by modified Parnerter's method. Besides, some derivatives of indole-2-carboxylic acid such as N,N-bis-(2-chloroethyl)-indole-2-carboxylic acid amide (XVI), indolyl ethyleneimine (XVII) and 3-iodo-indole-2-carboxylic acid (XVIII) were also prepared.Compounds Ⅵa and Ⅵc showed inhibiting action against sarcoma 180 and melanoma in mice, but compound XVI, XVII and XVIII have no effect toward sarcoma 180. The pharmacological actions of the above compounds will be reported elsewhere.

1.本文叙述了从2,4-二硝基苯甲醛开始经过七步反应合成6-[双-(β-氯乙基)-氨基]-吲哚-2-羧酸(Ⅵb). 2.从相应的硝基吲哚-2-羧酸(Ⅶa和Ⅶb)经还原,羟乙基化,氯化,水解制成5-[双-(β-氯乙基)-氨基]-吲哚-2-羧酸(Ⅵa)和7-[双-(β-氯乙基)-氨基]-吲哚-2-羧酸(Ⅵc). 3.制备了双-(β-氯乙基)-吲哚-2-甲酰胺(ⅩⅥ),吲哚-2-甲酰-乙烯亚胺(ⅩⅦ)和3-碘代吲哚-2-羧酸(ⅩⅧ)业已制备.

 
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