Chinese Journal of Chemistry

Cover image for Vol. 32 Issue 4

April, 2014

Volume 32, Issue 4

Pages 285–369

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Communication
    5. Full Papers
    6. Notes
    1. You have free access to this content
      Cover Picture: An Efficient and Simple Method for Stereoselective Synthesis of N-Substituted Iminosugars from D-Xylose Derivative (Chin. J. Chem. 4/2014) (page 285)

      Jichao Zhang, Wen Yuan, Xiaofeng Ma, Haibo Wang and Huawu Shao

      Article first published online: 25 APR 2014 | DOI: 10.1002/cjoc.201490008

      Thumbnail image of graphical abstract

      The cover picture shows the stereoselective synthesis of various N-substituted iminosugars from D-xylose derivative. As is well known, iminosugars are potential glycosidase inhibitors, which have great potential as drugs to treat various diseases such as diabetes, Gaucher's disease, HIV infection and so on. Many examples indicate that N-substituted groups affect the bioactivity of iminosugars. An efficient and simple method was described for synthesis of N-substituted iminosugars via intramolecular Michael addition reaction. A series of N-alkyl substituted iminosugars C-glycosides were synthesized in good yields with high stereoselectivity. The stereochemistry of the final product was determined by 1H NMR and H-H-COSY. The coupling constants showed the trans-configuration between C-1 and 3′-OBn. More details are discussed in the article by Shao et al. on page 361–364.

  2. Contents

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Communication
    5. Full Papers
    6. Notes
    1. Contents: Chin. J. Chem. 4/2014 (pages 287–290)

      Article first published online: 25 APR 2014 | DOI: 10.1002/cjoc.201490009

  3. Communication

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Communication
    5. Full Papers
    6. Notes
    1. Preparation of Durable Emitter of Electrospray Mass Spectrometry by Covalently Coating the Fused-Silica Capillary Tip with Carbon-Nanotube Sol-Gel Composite Material (pages 293–297)

      Hanzhi Zhang, Chao Liu, Xuepei Zhang and Jingwu Kang

      Article first published online: 22 APR 2014 | DOI: 10.1002/cjoc.201400148

      Thumbnail image of graphical abstract

      An approach for the preparation of emitter of ESI MS is developed. The prepared emitters are durable and able to produce very stable MS signals.

  4. Full Papers

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Communication
    5. Full Papers
    6. Notes
    1. Ethynylene-Linked Oligomers Based on Benzodithiophene: Synthesis and Photoelectric Properties (pages 298–306)

      Songyang Jiang, Yuwen Ma, Yingyi Wang, Chengyun Wang and Yongjia Shen

      Article first published online: 22 APR 2014 | DOI: 10.1002/cjoc.201400079

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      Two oligomers based on benzodithiophene with different structures and energy levels.

    2. Photochemical Studies on Bicyclo[2.1.1]hexyl Derivatives: Chemical Behavior and Asymmetric Induction (pages 307–312)

      Manling Ma, Feixue Xue, Chao Yang and Wujiong Xia

      Article first published online: 4 APR 2014 | DOI: 10.1002/cjoc.201300893

      Thumbnail image of graphical abstract

      Bicyclo[2.1.1]hexanyl derivatives were synthesized and their photochemical behaviour was investigated in acetonitrile solution.

    3. Supramolecular Nanofibers/Hydrogels of the Conjugates of Nucleobase, Saccharide, and Amino Acids (pages 313–318)

      Dongdong Wu, Xuewen Du, Junfeng Shi, Jie Zhou and Bing Xu

      Article first published online: 22 APR 2014 | DOI: 10.1002/cjoc.201400092

      Thumbnail image of graphical abstract

      We explored three new hydrogelators based on the conjugates of three naturally occurring biological building blocks: nucleobase, saccharide, and amino acids. Being synthesized via a facile solid phase peptide synthesis route, the hydrogelators self-assemble in water to afford supramolecular nanofibers and hydrogels. The hydrogels are characterized by transmission electron microscopy, oscillation rheometry and circular dichroism. These hydrogelators also exhibit excellent cell-compatibility.

    4. [2]Pseudorotaxanes Based on Naphtho-21-crown-7 and Secondary Dialkylammonium Salts: Remarkably Improved Association Constants Among Four Threaded Structures (pages 319–323)

      Qizhong Zhou, Yan Luo, Huajiang Jiang, Yuyuan Ye, Quan Zhang, Guoliang Dai and Rener Chen

      Article first published online: 22 APR 2014 | DOI: 10.1002/cjoc.201400049

      Thumbnail image of graphical abstract

      This research article is focused on the recognition interaction of a new host naphtho-21-crown-7 and four secondary dialkylammonium salts. In acetone, the host can effectively recognize secondary dialkylammonium salts to form 1:1 host-guest complexes which belong to slow-exchange systems.

    5. Computational Investigations about the Effects of Hetero-molecular Aggregation on Bioactivities: a Case of Neonicotinoids and Water (pages 324–334)

      Shuang Xia, Jiagao Cheng, Yue Feng, Xusheng Shao, Haibin Luo, Zhiping Xu, Xiaoyong Xu and Zhong Li

      Article first published online: 22 APR 2014 | DOI: 10.1002/cjoc.201400112

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      QSAR and pharmacophore modeling investigations were applied on 19 neonicotinoids, as well as their aggregates with water. The aggregate-based CoMSIA, PHASE and linear QSAR models presented better statistical significance and predictabilities than the monomer ones, which indicated that the bioactivities correlated with the aggregate properties and the hydrogen bonds relating to water-bridge of the active site.

    6. Decomposition of 2-Mercaptoethyl O-Ester: SN2 Displacement or Acyl Transfer? A Theoretical Study (pages 335–342)

      Shenshen Zhang, Chenze Qi and Chen Wang

      Article first published online: 4 APR 2014 | DOI: 10.1002/cjoc.201300874

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      For the decomposition of 2-mercaptoethyl O-ester, the SN2 displacement mechanism is much favored over the N-to-S acyl transfer mechanism. If the thiol group is replaced by an amino group, the N-to-N acyl transfer mechanism is more favored than the SN2 displacement mechanism.

    7. Manganese(III) Salen Complex Immobilized on Fe3O4 Magnetic Nanoparticles: The Efficient, Green and Reusable Nanocatalyst (pages 349–355)

      Seyed Mohsen Sadeghzadeh, Faeze Daneshfar and Maryam Malekzadeh

      Article first published online: 4 APR 2014 | DOI: 10.1002/cjoc.201400007

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      Synthesis of benzopyranopyrimidines from salicylic aldehydes, malononitrile, and amine in the presence of Fe3O4\SiO2\Salen\Mn MNPs.

    8. New Soluble Near-Infrared Dyes Based on Terrylene Diimides with Four Aromatic Heterocycles (pages 356–360)

      Huimin Wei, Nan Jiang, Nan Zhao, Ying Zhang and Baoxiang Gao

      Article first published online: 22 APR 2014 | DOI: 10.1002/cjoc.201400175

      Thumbnail image of graphical abstract

      Two soluble NIR dyes based on terrylene diimides were synthesized by the introduction of aromatic heterocycles substituents on the bay region. The effects of the substituted groups on the optical and electrochemical properties were further investigated.

  5. Notes

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Communication
    5. Full Papers
    6. Notes
    1. An Efficient and Simple Method for Stereoselective Synthesis of N-Substituted Iminosugars from D-Xylose Derivative (pages 361–364)

      Jichao Zhang, Wen Yuan, Xiaofeng Ma, Haibo Wang and Huawu Shao

      Article first published online: 4 APR 2014 | DOI: 10.1002/cjoc.201400070

      Thumbnail image of graphical abstract
    2. Enatioselective Chalcogeno-Baylis-Hillman Reaction of Arylaldehydes with MVK and Acrylates Catalyzed by Chiral Thiepin-TiCl4 Complex (pages 365–369)

      Yan Yin, Guofeng Sun, Heng Zhang, Hong Zhou and Fanhong Wu

      Article first published online: 22 APR 2014 | DOI: 10.1002/cjoc.201400077

      Thumbnail image of graphical abstract

      Enatioselective Chalcogeno-Baylis-Hillman reactions between benzaldehydes and acrylates were investigated in the presence of chiral thiepin-Lewis acid complex. Finally, up to 64% ee was achieved in the presence of 0.2 equiv. of (S)-thiepin at 20°C.

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