本期目录

2009年, 第20卷, 第08期 刊出日期:2009-08-20
  

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  • Qi Hai Liu, Xin Fa Dong, Wei Ming Lin
    中国化学快报. 2009, 20(08): 889-892. https://doi.org/10.1016/j.cclet.2009.03.050
    摘要 ( ) PDF全文 ( ) 可视化 收藏
    Amorphous Ni-Ru-B/ZrO2 catalyst was prepared by the means of chemical reduction, and selective CO methanation as astrategy for CO removal in fuel processing applications was investigated over the amorphous Ni-Ru-B/ZrO2 catalyst. The result showed that, at the temperature of 210-230℃, the catalyst was shown to be capable of reducing CO in a hydrogen-rich reformate to less than 10 ppm, while keeping the CO2 conversion below 1.55% and the hydrogen consumption below 6.50%.
  • Sanjay K. Dabhade, Rajesh O. Bora, Mazahar Farooqui, Charansingh H. Gill
    中国化学快报. 2009, 20(08): 893-897. https://doi.org/10.1016/j.cclet.2009.01.009
    摘要 ( ) PDF全文 ( ) 可视化 收藏
    Various 2-arylbenzimidazoles were synthesized from o-phenylenediamine and aldehydes via one-step process using DMP (Dess-Martin-periodinane) reagent as an oxidant. The method was proved to be simple, convenient and the products were isolated with good yields (80-90%).
  • Yong Zhang, M. Naseer A. Khan, Ping Gong, Yong Sup Lee
    中国化学快报. 2009, 20(08): 898-900. https://doi.org/10.1016/j.cclet.2009.03.032
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    A synthesis of methyl 2-hydroxy-4-oxo-4-(substituted phenyl) butanoates has been accomplished using Friedel-Crafts acylation of substituted benzenes with 2-acetoxybutanoyl chloride. The key feature of this strategy is that various 4-arylbutanoates can be obtained conveniently, which are important intermediates for the synthesis of biologically active compounds including ACE inhibitors.
  • Ming Zhao, Min Feng, Shu Fang Bai, Yuan Zhang, Wen Chao Bi, Hong Chen
    中国化学快报. 2009, 20(08): 901-905. https://doi.org/10.1016/j.cclet.2009.03.043
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    In order to find compounds with superior bioactivity and overcoming multidrug resistance, a novel series of 4β-N-substituted podophyllotoxin derivatives were synthesized and evaluated as potential antitumor agents. Seven novel podophyllotoxin derivatives were synthesized by linking 4β-amino-4-deoxypodophyllotoxin with alcohols through maleic acid and tested against K562 and K562/A02 using MTT assay in vitro.
  • Xin Zhou, Mei Yue Zhang, Shu Tao Gao, Jing Jun Ma, Chun Wang, Chao Liu
    中国化学快报. 2009, 20(08): 906-908. https://doi.org/10.1016/j.cclet.2009.03.033
    摘要 ( ) PDF全文 ( ) 可视化 收藏
    1,5-Benzodiazepine derivatives have been synthesized by the condensation of o-phenylenediamines and ketones in the presence of boric acid as catalyst under mild conditions. This method is simple, environmentally benign and high yielding.
  • M. Saranga Pani, M. Arjun, D. Sridhar, K. Srinivas, T. Raviprasad
    中国化学快报. 2009, 20(08): 909-912. https://doi.org/10.1016/j.cclet.2009.04.010
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    An efficient synthesis of 3,4-dihydropyrimidine 2 (1H)-ones and thiones (3,4-DHPMs) core was prepared by one-pot threecomponent Biginelli condensation and which was catalyzed by trifluoromethane sulfonic acid. The classical Bignelli reaction has been extended by the use of N-substituted benzoxazolyl semicarbazides and thiosemicarbazides and this method has the advantage of excellent yields and short reaction times.
  • Cheng Yi Zhang, Xin Qin Gao, Jiang Hua Zhang, Xiao Jun Peng
    中国化学快报. 2009, 20(08): 913-916. https://doi.org/10.1016/j.cclet.2009.03.047
    摘要 ( ) PDF全文 ( ) 可视化 收藏
    A highly efficient benzylation of arenes and heteroarenes catalyzed by HfCl4/HfO2 has been developed. Broad scope of benzylation reagents have been used in this process with high yields under mild condition. Additionally, the HfO2 can be re-used after the reaction.
  • Tian Jiao Zhu, Lin Du, Peng Fei Hao, Zhen Jian Lin, Qian Qun Gu
    中国化学快报. 2009, 20(08): 917-920. https://doi.org/10.1016/j.cclet.2009.03.009
    摘要 ( ) PDF全文 ( ) 可视化 收藏
    Citrinal A (1), a novel tricyclic compound with a rare tetrahydro-2H-benzofuro[7-b][1,4]dioxin-9(3H)-one skeleton, along with two known related compounds, citrinin (2) and 2,3,4-trimethyl-5,7-dihydroxy-2,3-dihydrobenzofuran (3) were isolated from an algicolous fungus Penicillium sp. i-1-1. The structure and stereochemistry of 1 were determined by comprehensive spectral and biogenic analysis. Its cytotoxic effects on the A-549 and HL-60 cell lines were evaluated.
  • Zhong Lv Zhang, Zhi Jie Sun, Fei Xue, Xian Jin Luo, Nai Yun Xiu, Li Teng, Zong Gen Peng
    中国化学快报. 2009, 20(08): 921-923. https://doi.org/10.1016/j.cclet.2009.03.035
    摘要 ( ) PDF全文 ( ) 可视化 收藏
    A series of novel benzimidazole derivatives was synthesized and their anti-Coxsackie virus B3(CVB3) activity was evaluated in VERO cells. Compounds 9 and 10 exhibited better inhibitory activity than those of ribavirin (RBV) with IC50 values of 5.30 and 1.06 μg/mL, respectively.
  • Ahmad Ziafati, Hossein Eshghi, Omolbanin Sabzevari
    中国化学快报. 2009, 20(08): 924-926. https://doi.org/10.1016/j.cclet.2009.03.031
    摘要 ( ) PDF全文 ( ) 可视化 收藏
    13-Crown-4, 16-crown-5, dibenzo-12-crown-4 and dibenzo-14-crown-4 were synthesized by a one-pot microwave-assisted procedure in good yields. Irradiation of diols and dichlorides in the presence of sodium hydroxide in DMSO gave title crown ethers presumably within a template effect.
  • Zhan Zhang, Hai Ying Ji, Xian Lei Fu, Yu Yang, Yun Rong Xue, Guo Hua Gao
    中国化学快报. 2009, 20(08): 927-930. https://doi.org/10.1016/j.cclet.2009.03.034
    摘要 ( ) PDF全文 ( ) 可视化 收藏
    Substituted polyaryls were synthesized successfully via sterically hindered double Suzuki cross-couplings of arylboronic acids with aryl dibromides in the presence of Pd(PPh3)4 and KOtBu within a very short time.
  • Shu Tao Ma, Rui Xin Ma, Rui Qing Xian, Bo Jiao
    中国化学快报. 2009, 20(08): 931-934. https://doi.org/10.1016/j.cclet.2009.03.015
    摘要 ( ) PDF全文 ( ) 可视化 收藏
    A series of novel dimers of 15-membered macrolides was synthesized and evaluated. The dimers exhibited excellent activity against erythromycin-susceptible S. pneumonia, but did not show any improved activity against erythromycin-resistant S.pneumoniae encoded by erm gene.
  • Zhi Gang Dan, Jun Zhang, Shi Chong Yu, Hong Gang Hu, Xiao Yun Chai, Qing Yan Sun, Qiu Ye Wu
    中国化学快报. 2009, 20(08): 935-938. https://doi.org/10.1016/j.cclet.2009.03.027
    摘要 ( ) PDF全文 ( ) 可视化 收藏
    A series of 1-(1H-1,2,4-triazole-1-yl)-2-(2,4-difluorophenyl)-3-(N-isoproyl-N-substituted-amino)-2-propanols have been designed and synthesized on the basis of the active site of lanosterol 14a-demethylase (CYP51). Their structures were confirmed by MS and 1H NMR. In vitro antifungal activities of these synthesized compounds were evaluated against eight human pathogenic fungi. The results showed that all title compounds exhibited activity against fungi tested to some extent. Compounds 3c, 3d, 7a, 7b and 7c exhibited more potent antifungal activities against nearly all fungi tested except Aspergillus fumigatus than fluconazole.
  • Jia Cheng Xu, Xin Qiao Liu, Ke Li Chen
    中国化学快报. 2009, 20(08): 939-941. https://doi.org/10.1016/j.cclet.2009.03.046
    摘要 ( ) PDF全文 ( ) 可视化 收藏
    A new biflavonoid, 2,3-dihydro-5,5",7,7",4'-pentahydroxy-6,6"-dimethyl-[3'-O-4''']-biflavone 1 and two known biflavonoids 2,3"-dihydroochnaflavone 2 and 2",3"-dihydro-3',3 '''-biapigenin 3 were isolated from the herb of Selaginella labordei Hieron. ex Christ. Their structures were elucidated by spectroscopic methods.
  • Yun Peng Diao, Kun Li, Shan Shan Huang, Ke Xin Liu, Ting Guo Kang
    中国化学快报. 2009, 20(08): 942-944. https://doi.org/10.1016/j.cclet.2009.03.039
    摘要 ( ) PDF全文 ( ) 可视化 收藏
    A new isoflavone was obstained from the medicinal herb Amorpha fruticosa. It was elucidated asbenzopyran-12-one,1,4,10,11-tetrahydro-6'-[8'-(hydroxymethyl)ethenyl]-2,3-dimethoxy-8'-O-β-D-glucopyranosyl-O-α-D-arabinoside by spectroscopic methods including UV, IR, 1D NMR and 2D NMR techniques. And the activity against acetaminophen-induced hepatotoxicity of this compound was also studied, and found this compound can protect liver obviously from hepatotoxicity induced by acetaminophen (AAP).
  • Jun Ju Xu, Ning Hua Tan, Jiang Xiong, Abiodun Humphrey Adebayo, Hong Jin Han, Guang Zhi Zeng, Chang Jiu Ji, Yu Mei Zhang, Mei Ju Zhu
    中国化学快报. 2009, 20(08): 945-948. https://doi.org/10.1016/j.cclet.2009.03.029
    摘要 ( ) PDF全文 ( ) 可视化 收藏
    Two novel 4,5-secoeudesmane sesquiterpenoids, oxyphyllones A (1) and B (2) were isolated from the fruits of Alpinia oxyphylla. Their structures were established by spectroscopic methods including 1D and 2D NMR spectra. These two compounds are the first example of naturally occurring sesquiterpenoids with a 4,5-secoeudesmane skeleton in the family of Zingiberaceae and oxyphyllone A (1) is the first 4,5-secoeudesmane type of 13-norsesquiterpenoid. Compounds 1 and 2 exhibited no cytotoxicities against three cancer cell lines at 10 μg/mL.
  • Dong Qing Fei, Zhan Xin Zhang
    中国化学快报. 2009, 20(08): 949-951. https://doi.org/10.1016/j.cclet.2009.04.009
    摘要 ( ) PDF全文 ( ) 可视化 收藏
    A new eremophilane-type sesquiterpene, 1α,8β,10β-trihydroxy-6β-(2-methylacryloyl)oxyeremophil-7(11)-en-8α,12-olide,was isolated from the roots of Ligularia virgaurea. Its structure was established on the basis of various spectroscopic analyses,including the 1D, 2D NMR techniques and HR-ESI-MS.
  • Xiao Ke Zheng, Jin Hui Guo, Wei Sheng Feng, Hong Wei Li
    中国化学快报. 2009, 20(08): 952-954. https://doi.org/10.1016/j.cclet.2009.03.041
    摘要 ( ) PDF全文 ( ) 可视化 收藏
    Three new sesquiterpenes, namely schensianol A (1), schensianolside A (2) and schensianolside B (3) were isolated from the stems and leaves of Euonymus schensianus Maxim. Their structures were established by chemical methods and spectroscopic techniques including 2D NMR.
  • Tian Tian Hu, Xue Zhang, Shi Zhong Ma, Xin Sheng Yao
    中国化学快报. 2009, 20(08): 955-957. https://doi.org/10.1016/j.cclet.2009.03.045
    摘要 ( ) PDF全文 ( ) 可视化 收藏
    A new protoberberine alkaloid, named 5,6-dihydro-10-hydroxy-2,3,9-trimethoxy-13-methyldibenzo[a,g]quinolizinium (1) was isolated from the 60% ethanol extract of the tubers of Corydalis yanhusuo W. T. Wang, together with a new natural product, 13-methylpalmatrubine (2). Their structures were established by spectroscopic methods.
  • Xue Hu Li, Wen Juan Zhang, Huan Yang Qi, Yan Ping Shi
    中国化学快报. 2009, 20(08): 958-960. https://doi.org/10.1016/j.cclet.2009.03.040
    摘要 ( ) PDF全文 ( ) 可视化 收藏
    A new phenolic lactone, named phellolactone (1) was isolated from the bark of Phellodendron chinense Schneid and its structure was elucidated by means of extensively spectroscopic methods, including IR, UV, HRESI-MS and NMR techniques.
  • Mousa Ghaemy, Hossein Behmadi, Raouf Alizadeh
    中国化学快报. 2009, 20(08): 961-964. https://doi.org/10.1016/j.cclet.2009.01.038
    摘要 ( ) PDF全文 ( ) 可视化 收藏
    New unsymmetrical diamine monomer containing triaryl imidazole pendent group, 4-[4-(4,5-diphenyl-1H-imidazol-2-yl)phenoxy]-1,3-benzenediamine, was synthesized via aromatic substitution reaction of 1-chloro-2,4-dinitrobenzene with 4-(4,5-diphenyl-1H-imidazol-2-yl)phenol, followed by palladium-catalyzed hydrazine reduction. This new monomer was further confirmed by FT-IR,1H NMR and 13C NMR. Novel polyamides having pendant triaryl imidazole group were prepared by the phosphorylation polycondensation of four commercially aromatic dicarboxylic acids with the prepared diamine. Inherent viscosities of polyamides were in the range 0.42-0.53 dL/g indicating formation of medium molecular weight polymers.Polyamides exhibited glass-transition temperature (Tg) in the range 236-265℃. These polymers are essentially amorphous and were soluble in polar aprotic solvents such as DMF, NMP, DMAc. The 10% weight loss temperatures in air atmosphere, measured by TGA were in the range 350-373℃ indicating their good thermal stabilities.
  • Lei Wang, Guang Ming Zhu
    中国化学快报. 2009, 20(08): 965-968. https://doi.org/10.1016/j.cclet.2009.02.019
    摘要 ( ) PDF全文 ( ) 可视化 收藏
    Two poly(aryl ether)s containing naphthyl moieties were prepared from bis(3,5-dimethyl-4-hydroxyphenyl)naphthyl methane (monomer 1) via nucleophilic aromatic substitution polycondensation with bis(4-fluorophenyl) ketone and bis(4-fluorophenyl) sulfone. The structures of these polymers were confirmed by 1H NMR. The Mn values of the two polymers were 96,200 and 88,600,respectively. The polymers exhibited good thermal stabilities with 5% mass loss at T>400℃ and high glass-transition temperature (Tg) of T>250℃. Moreover, the resultant polymers were amorphous determined by wide angle X-ray diffraction (WAXD).
  • Yu Zhang, Shang Wen Yan Gong, Lu Jin, Shuang Man Li, Zhong Ping Chen, Ming Ma, Ning Gu
    中国化学快报. 2009, 20(08): 969-972. https://doi.org/10.1016/j.cclet.2009.03.038
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    This paper describes the formation of magnetic and fluorescent nanocomposite particles which consist of superparamagneticFe3O4core, SiO2 shell and organic dye (FITC) coating layer on their surface. The obtained nanocomposites possess typical superparamagnetism and exhibit clear green fluorescence image. And their fluorescence emission is pH-dependent, which would be applied to pH sensing.
  • Shan Jian Cao, Ai You Hao, Hong Yuan Sun, Tao Sun
    中国化学快报. 2009, 20(08): 973-976. https://doi.org/10.1016/j.cclet.2009.03.025
    摘要 ( ) PDF全文 ( ) 可视化 收藏
    Ethoxymethxoymethane (EMM) was conveniently prepared by acetalization of aqueous formaldehyde with methanol and ethanol in a batch reactive distillation mode using a cation-exchange resin catalyst for the first time. EMM was found to be a significant cosolvent of methanol/gasoline blends.
  • Ji Wei Liu, Yu Zhang, Cun Wang Ge, Yong Long Jin, Sun Ling Hu, Ning Gu
    中国化学快报. 2009, 20(08): 977-980. https://doi.org/10.1016/j.cclet.2009.03.036
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    Highly luminescent water-soluble CdTe quantum dots (QDs) have been synthesized with an electrogenerated precursor. The obtained CdTe QDs can possess good crystallizability, high quantum yield (QY) and favorable stability. Furthermore, a detection system is designed firstly for the investigation of the temperature-dependent PL of the QDs.
  • Jin Ping Song, Yu Jing Guo, Shao Min Shuang, Chuan Dong
    中国化学快报. 2009, 20(08): 981-984. https://doi.org/10.1016/j.cclet.2009.03.018
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    The electrochemical properties of two basic violets (methyl violet and ethyl violet) at the MWNTs/Nafion modified glassy carbon electrode were investigated. The redox of the basic violets is two-electron and two-proton process, and methyl violet presents stronger electron transfer capacity than ethyl violet. Meanwhile, the inclusion constants of the two basic violets with five CDs were determined by differential pulse voltammetry (DPV). The two basic violets and CDs can form 1:1 complexes.The inclusion capacities of the two basic violets follow the same order:CM-β-CD > HP-β-CD > TM-β-CD > DM-β-CD > β-CD.
  • Chun Xiang Li, Jian Ming Pan, Jie Gao, Yong Sheng Yan, Gan Qing Zhao
    中国化学快报. 2009, 20(08): 985-989. https://doi.org/10.1016/j.cclet.2009.03.020
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    The surface ion-imprinting concept and chitosan incorporated sol-gel process were applied to the synthesis of a new attapulgitesupported polymer for selective separation of Ce(Ⅲ) from aqueous solution. The imprinting mechanism of prepared ion-imprinted polymer were discussed with the Characteristics of FT-IR and SEM. Results from the experiments of adsorption capacity and selectivity suggested that ion-imprinted polymer offered a fast kinetics for the adsorption of Ce(Ⅲ) under the optimum conditions.Its maximum adsorption capacity was 38.02 mg/g, and the selective recognition towards Ce(Ⅲ) was much higher than that of the non-imprinted polymer and attapulgite. The prepared functional polymer was shown to be promising for selective separation and enrichment of trace Ce(Ⅲ) in environmental samples.
  • Xiang Xian Meng, Xiao Hai Yang, Ke Min Wang, Wei Hong Tan, Qiu Ping Guo
    中国化学快报. 2009, 20(08): 990-994. https://doi.org/10.1016/j.cclet.2009.03.028
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    Detection of deoxyribozyme (DNAzyme) cleavage process usually needs complex and time-consuming radial labeling, gel electrophoresis and autoradiography. This paper reported an approach to detect DNAzyme cleavage process in real time using a fluorescence probe. The probe was employed as DNAzyme substrate to convert directly the cleavage information into fluorescence signal in real time. Compared with traditional approach, this non-isotope method not only brought a convenient means to monitor the DNAzyme cleavage reaction, but also offered abundant dynamic data for choosing potential gene therapeutic agents. It provides a new tool for DNAzyme research, as well as a new insight into research on human disease diagnosis. Based on this method, 8-17deoxyribozyme (8-17DNAzyme) against hepatitis C virus RNA (HCV-RNA) was designed and the cleavage process was studied in real time.
  • Hong Tao Deng, Juan Juan Wang, Miao Ma, Zhong Yang Liu, Fei Zheng
    中国化学快报. 2009, 20(08): 995-999. https://doi.org/10.1016/j.cclet.2009.03.037
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    The hydrophobic surface modification of chitosan gels was carried out using the amidating reaction of amido groups on a gel surface with stearic acid activated by 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS). Lipases from Candida rugosa were adsorbed on the nascent chitosan gels (CS) and stearyl-modified gels (SCS)with different degrees of amidation. The increased surface hydrophobicity of chitosan gels improved the adsorption capacity and activity of the immobilized lipase. SCS with 31.46% amidation showed the maximum activity retention (83.43%). The experimental results suggest that the moderate surface hydrophilicity/hydrophobicity of chitosan gels is necessary for the improvement of the activity of immobilized lipase.
  • Zhong Dong Peng, Yan Bing Cao, Guo Rong Hu, Ke Du, Xu Guang Gao, Zheng Wei Xiao
    中国化学快报. 2009, 20(08): 1000-1004. https://doi.org/10.1016/j.cclet.2009.03.051
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    A novel synthetic method of microwave processing to prepare Li2FeSiO4 cathode materials is adopted. The Li2FeSiO4 cathode material is prepared by mechanical ball-milling and subsequent microwave processing. Olivin-type Li2FeSiO4 sample with uniform and fine particle sizes is successfully and fast synthesized by microwave heating at 700℃ in 12 min. And the obtained Li2FeSiO4 materials show better electrochemical performance and microstructure than those of Li2FeSiO4 sample by the conventional solidstate reaction.
  • Fatemeh F. Bamoharram, Mohammad M. Heravi, Touran Ardalan, Pouran Ardalan
    中国化学快报. 2009, 20(08): 1005-1009. https://doi.org/10.1016/j.cclet.2009.03.021
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    A kinetic study of the electron-transfer in the reaction of tribenzylchlorotin with potassium 12-tungsto cobalt (Ⅲ) ate ion,K5[CoW12O40], abbreviated as Co(Ⅲ)W, has been performed in different solvents. The studies were carried out in methanol,ethanol, acetonitrile and acetic acid/water. The rate constants, reaction rates and activation parameters were calculated.#br#Our findings show that the rate of disappearance of the Co(Ⅲ) is pseudo-first order. The kinetic data is strongly affected by used solvents. The maximum and minimum rate constants were achieved in the ethanol and acetic acid/water (70/30) as a solvent, respectively. In all of the used solvents, negative value of activation entropies was observed, but negative activation enthalpies are observed in methanol, ethanol and acetonitrile. The reaction rate is increased with increase of Co(Ⅲ) concentration.
  • Tao Hong Li, Chuan Ming Wang, Shi Wen Yu, Xiang Yi Liu, Hui Fu, Xiao Guang Xie
    中国化学快报. 2009, 20(08): 1010-1014. https://doi.org/10.1016/j.cclet.2009.03.007
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    The reaction of Os+(6D,4F) with N2O has been investigated at B3LYP/TZVP and CCSD(T)/6-311+G* levels of theory. The mechanisms corresponding to O-atom and N-atom transfer reactions have been revealed. It was found that on the sextet reactionsurface both the O-atom and N-atom transfer reactions undergo through direct-abstraction mechanism, leading to the formation of OsO+ and OsN+, whereas on quartet surface the wo reactions undergo through O-N bond or N-N bond insertion mechanism. The calculated energetics shows that the reactions on the sextet surface have notable energy barriers, whereas the reactions on quartet surface are barrierless.