高等学校化学学报 ›› 2017, Vol. 38 ›› Issue (3): 442.doi: 10.7503/cjcu20160733

• 物理化学 • 上一篇    下一篇

七元瓜环对2'-羟基查尔酮溶解性、稳定性及抗氧化活性的影响

李梦杰1, 练小卫2, 许志玲2, 邢旭阳1, 张建新3, 李瑞1, 陶朱1, 张前军1()   

  1. 1. 贵州省大环化学及超分子化学重点实验室, 贵州大学化学与化工学院, 2. 精细化工中心, 贵阳 550025
    3. 中国科学院贵州省天然产物化学重点实验室, 贵阳 550025
  • 收稿日期:2016-10-21 出版日期:2017-03-10 发布日期:2017-02-22
  • 作者简介:联系人简介: 张前军, 女, 博士, 教授, 主要从事天然有机化学方面的研究. E-mail: qianjunzhang@126.com
  • 基金资助:
    国家自然科学基金(批准号: 21272045)资助.

Influence of Interaction with Cucurbit[7]uril on Solubility, Stability and Antioxidant Activity of 2'-Hydroxychalcone

LI Mengjie1, LIAN Xiaowei2, XU Zhiling2, XING Xuyang1, ZHANG Jianxin3, LI Rui1, TAO Zhu1,*, ZHANG Qianjun1,*()   

  1. 1. Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, College of Chemistry and Chemical Engineering,
    2. Research and Development Center of Fine Chemicals, Guizhou University, Guiyang 550025, China
    3. Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Science, Guiyang 550025, China
  • Received:2016-10-21 Online:2017-03-10 Published:2017-02-22
  • Contact: TAO Zhu,ZHANG Qianjun E-mail:qianjunzhang@126.com
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No. 21272045).

摘要:

利用1H NMR、 紫外吸收光谱和荧光光谱等方法考察了七元瓜环(Q[7])对2'-羟基查尔酮(CET)的包结作用. 结果表明, Q[7]与CET形成了摩尔比为1∶1的包结配合物, 紫外吸收光谱和荧光光谱测得的结合稳定常数分别为1.0248×106和1.253×106. 相溶解度法研究结果表明, 当Q[7]的浓度为1×10-3 mol/L时, 可使CET在水中的溶解度增加52倍. 紫外吸收光谱随时间变化的研究结果表明, Q[7]使CET的稳定性增加3.5倍. 采用体外抗氧化活性测定(ABTS法)考察了Q[7]对CET抗氧化活性的影响, 发现CET@Q[7]包结配合物以及游离CET均对ABTS自由基有较好的清除作用. IC50值分别为3.4×10-5和2.4×10-5 mol/L, 表明Q[7]不仅能增加CET的溶解性和稳定性, 同时对CET抗氧化活性的影响不大.

关键词: 查尔酮, 七元瓜环(Q[7]), 包结配合物, 抗氧化活性, 稳定性

Abstract:

The host-guest interactions and properties of 2'-hydroxychalcone(CET) with cucurbit[7]uril(Q[7]) were investigated by means of 1H NMR, IR, UV-Vis absorption and fluorometry spectroscopy. The results revealed that 2'-hydroxychalcone could form an inclusion complex of 1∶1 with Q[7]. The inclusion constants of CET with Q[7] obtained by UV absorption and fluorescence spectroscopy were 1.0248×106 and 1.253×106, respectively. The phase-solubility experiments revealed that the solubility of CET increased 52 times by interacting with Q[7][c(Q[7])=1×10-3 mol/L]. The time-scaled UV absorption spectra showed that Q[7] increases the stability of CET by 3.5 times. The antioxidant activity(ABTS method) of both the CET@Q[7] inclusion complex and CET proved to be good scavenging effect to the ABTS radical, IC50 values were 3.4×10-5 and 2.4×10-5 mol/L, respectively. Thus, Q[7] could not only increase the solubility and stability of CET, but also have little effect on the antioxidant activity of CET. As a result, stability and water solubility were obviously improved.

Key words: Chalcone, Cucurbit[7]uril(Q[7]), Inclusion complex, Antioxidant activity, Stability

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