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first total synthesis
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  首次全合成
     First Total Synthesis of (±)-13-Methoxy Sempervirol-6-hydroxy- 5,8,11,13-tetraen-7-one
     13-甲氧基-6-羟基钩勿烷-5,8,11,13-四烯-7-酮的首次全合成
短句来源
     First Total Synthesis of 5-Methyl-2-(2E,6E-3,7,11-trimethyl- 2,6-dodecadien-9-onyl)benzo-1,4-quinone and the Corresponding Hydroquinone
     5-甲基-[(2E,6E)-3,7,11-三甲基-9-氧代十二碳二烯]苯醌和氢醌的首次全合成
短句来源
     Studies on the First Total Synthesis of Standishinal
     天然产物Standishinal的首次全合成研究
短句来源
     The First Total Synthesis of (±)-Sinaiticin
     (±)-Sinaiticin的首次全合成
短句来源
     The first total synthesis of 7,8-(2,2-dimethylpyrano)-4′-methoxyflavanone,as well as 3′,4′-(2,2-dimethylpyrano)-2′-hydroxy-4-methoxychalcone,was accomplished from 2,4-dihydroxyacetophenone by prenylation,dehydrogenation cyclization,condensation and cyclization in four steps.
     以 2 ,4-二羟基苯乙酮为起始原料 ,经过异戊烯基取代、脱氢闭环、羟醛缩合、催化环化等步骤完成了天然产物 7,8-( 2 ,2 -二甲基吡喃 ) -4′-甲氧基黄烷酮 ( 1 )的首次全合成 ,中间体查尔酮 5也是天然产物 .
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  “first total synthesis”译为未确定词的双语例句
     Studies on the First Total Synthesis of (±)-Salvinolone
     (±)-Salvinolone的全合成研究
短句来源
     All the enantiomer of 8-O-4' neolignans Virologins E, F, and G were first synthesized starting from 4-hydroxy-3,5-dimethoxybenzaldehyde and 1-(3,4,5-trimethoxyphenyl)-propan-2-ol, using Mitsunobu reaction as key step. Chapter 3. First total synthesis of two resveratrol derivatives and a novel stilbene-coumarin. The activity of resveratrol and coumarin were introduced in brief.
     二、几个8-O-4'新木脂素的立体选择性全合成研究对8-O-4′新木脂素的定义、简况和合成研究做了扼要的概述,并以4-羟基3,5-二甲氧基苯甲醛和1-(3,4,5-三甲氧基苯基)-2-丙醇为起始原料,用Mitsunobu偶联反应作为关键步骤,合成了手性的Virologin E,F,G及其对映异构体。
短句来源
     The first total synthesis of 1a, (±)-2 and (±)-3 was described and the oxidative coupling yield of synthesis of (±)-1 was higher than that in literatures.
     首次完成了1a,(±)-2和(±)-3的全合成,并以较文献报道为高的氧化偶联产率合成了(±)-1.
短句来源
     Then the structural revision and determination of absolute configuration of malyngamide U were presented by first total synthesis. Natural chiral pool (S)-carvone was selected as starting material.
     同时以天然手性源(S)-香芹酮为起始原料完成了malyngamide U的全合成。
短句来源
     The first total synthesis of squamosamide was achieved in seven steps by us, with an over- all yield of 14%.
     本文经过七步化学反应首次完成了该化合物的全合成研究工作。 总产率为14%。
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  相似匹配句对
     and total phosphorus.
     (2) 测定了微生物量磷组分。
短句来源
     The Total Contents of 2005
     《工程抗震与加固改造》2005年总目录
短句来源
     THE TOTAL SYNTHESIS OF CHUANGHSINMYCIN
     创新霉素的全合成
短句来源
     THE TOTAL SYNTHESIS OF AGRIMOPHOL
     鹤草酚的全合成
短句来源
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  first total synthesis
First total synthesis of a pentasaccharide repeating unit of the O-antigen of Hafnia alvei PCM 1529
      
The first total synthesis of glycononaosyl ceramide with a sialyl dimeric Lex sequence 1 is described.
      
The first total synthesis of glycosphingolipids isolated from wheat flour has been achieved in a regio- and stereo-controlled manner.
      
In 1961 Shapiro and Flowers [3] reported the first total synthesis of a cerebroside1 (Fig.
      
The first total synthesis of an organic compound, that of the hydrocyanide by C.W.
      
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Salvinolone is a polyoxygenated aromatic tricyclic diterpene which was firstisolated from the roots of Salva prionitis. The assignment of its structure for compound 1 wasmostly made on the basis of spectral data. In order to confirm the assigned structure, aconvergent synthesis of Salvinolone(1) has been achieved in nine steps, starting with3-fisopropoxy-5, 5-dimethyl-2-cyclohexenone (4) and alcohol (2) which are readily available. Thekey steps are alkylation of carbonyl compound and intramolecular Friedel-Crafts...

Salvinolone is a polyoxygenated aromatic tricyclic diterpene which was firstisolated from the roots of Salva prionitis. The assignment of its structure for compound 1 wasmostly made on the basis of spectral data. In order to confirm the assigned structure, aconvergent synthesis of Salvinolone(1) has been achieved in nine steps, starting with3-fisopropoxy-5, 5-dimethyl-2-cyclohexenone (4) and alcohol (2) which are readily available. Thekey steps are alkylation of carbonyl compound and intramolecular Friedel-Crafts reaction.This is the first total synthesis of (±)-salvinolone.

以2-(3,4-环己基烯二氧-5-异丙基)苯基乙醇(2)和3-异丙氧基-5,5-二甲基-1,3-环己烯酮(4)为原料,利用羰基α-位的烷基化反应和分子内的Friedel-Crafts反应为关键步骤,经9步反应,合成了多氧芳香型三环二萜类天然产物Salvinolone.

The first total synthesis of 7,8-(2,2-dimethylpyrano)-4′-methoxyflavanone,as well as 3′,4′-(2,2-dimethylpyrano)-2′-hydroxy-4-methoxychalcone,was accomplished from 2,4-dihydroxyacetophenone by prenylation,dehydrogenation cyclization,condensation and cyclization in four steps.

以 2 ,4-二羟基苯乙酮为起始原料 ,经过异戊烯基取代、脱氢闭环、羟醛缩合、催化环化等步骤完成了天然产物 7,8-( 2 ,2 -二甲基吡喃 ) -4′-甲氧基黄烷酮 ( 1 )的首次全合成 ,中间体查尔酮 5也是天然产物 .

The total synthesis of four naturally occurring dimeric stilbenes, (±)-shegansu B (1), gnetuhainin F (1a), (±)-maackin A (2) and (±)-cassigarol E (3), were studied. Isorhapontigenin (13) and piceatannol (14) were prepared from 3,5-dihydroxybenzoic acid in six steps. Oxidative coupling of 13 and 14 with HRP/H2O2 gave their respective dimeric compounds. The first total synthesis of 1a, (±)-2 and (±)-3 was described and the oxidative coupling yield of synthesis of (±)-1 was higher than that in literatures....

The total synthesis of four naturally occurring dimeric stilbenes, (±)-shegansu B (1), gnetuhainin F (1a), (±)-maackin A (2) and (±)-cassigarol E (3), were studied. Isorhapontigenin (13) and piceatannol (14) were prepared from 3,5-dihydroxybenzoic acid in six steps. Oxidative coupling of 13 and 14 with HRP/H2O2 gave their respective dimeric compounds. The first total synthesis of 1a, (±)-2 and (±)-3 was described and the oxidative coupling yield of synthesis of (±)-1 was higher than that in literatures.

对四种天然二聚二苯乙烯类化合物ShegansuB(1),GnetuhaininF(1a),MaackinA(2)以及CassigarolE(3)的全合成进行了研究.以3,5-二羟基苯甲酸(4)为起始原料,经六步反应制得异丹叶大黄素(13)和白皮杉醇(14),在HRP/H2O2酶催化氧化体系中,13和14分别进行自身的氧化偶联得到各自的二聚产物.首次完成了1a,(±)-2和(±)-3的全合成,并以较文献报道为高的氧化偶联产率合成了(±)-1.

 
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