Page 172 - 《精细化工》2020年第7期
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第 37 卷第 7 期                             精   细   化   工                                  Vol.37, No.7
             202 0 年 7 月                             FINE CHEMICALS                                 July  2020


              医药与日化原料
                               多巴胺--环糊精/α-生育酚的分子


                                            识别及包结物性能



                                                                      *
                                                  张冬梅,杨   成
                      (合成与生物胶体教育部重点实验室,江南大学  化学与材料工程学院,江苏  无锡  214122)

                 摘要:为了提升 α-生育酚(α-TOC)在环境中的稳定性,增强其包封率及药物有效利用,以多巴胺(DA)改性
                 的 β-环糊精(-CD-6-DA)为包结物主体分子对 α-TOC 进行主-客体分子识别,得到稳定的包结复合物
                 -CD-6-DA/α-TOC。采用 UV-Vis、2D-NOESY 与连续变量 Job's 法探究了 -CD-6-DA 的疏水空腔对 α-TOC 的包
                 封率、分子识别行为及主客体包结比。结果表明,改性后的 -CD-6-DA 对 α-TOC 的包封率高达 99.3%±0.7%,
                 促进了 α-TOC 进入疏水空腔中的深度,并将包结物的包结比由 2∶1 提升至 1∶1。此外,对 -CD-6-DA/α-TOC
                 包结物的生物性能进行探讨,发现其在 35  ℃下具有响应性释放能力,并展现出了高于 80%的细胞相容性以及
                 优异的体外抗氧化能力。
                 关键词:多巴胺--环糊精;α-生育酚;主客体包结物;包封率;可控释放;抗氧化性;医药原料
                 中图分类号:TQ460.1      文献标识码:A      文章编号:1003-5214 (2020) 07-1454-07



                        Molecular recognition of dopamine--cyclodextrin derivative/
                              α-tocopherol and performance of inclusion complex


                                                                           *
                                             ZHANG Dongmei, YANG Cheng
                 (Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering,
                 Jiangnan University, Wuxi 214122, Jiangsu, China)


                 Abstract: To  improve the stability of α-tocopherol (α-TOC) under natural  environment and enhance its
                 encapsulation rate and drug utilization, -cyclodextrin derivative (-CD-6-DA) modified by dopamine (DA)
                 was used as host molecule to self-embed α-TOC, thereby obtaining stable inclusion complex (-CD-6-DA/
                 α-TOC). The encapsulation rate, molecular recognition behaviors and inclusion proportion of -CD-6-DA
                 to α-TOC were investigated by UV-vis, 2D-NOESY, and continuous variable Job's methods. The results
                 showed that  -CD-6-DA had an encapsulation  rate to  α-TOC up to 99.3%±0.7%,  which  promoted the
                 embedded depth of α-TOC inside hydrophobic cavity, and increased inclusion proportion from 2∶1 to 1∶1.
                 The biological properties of inclusion complex -CD-6-DA/α-TOC were discussed. It was found that this
                 inclusion complex had a controlled release ability at 35  ℃. In addition, inclusion complex -CD-6-DA/
                 α-TOC showed up to 80% cytocompatibility, and exhibited excellent antioxidant capacity in vitro.
                 Key  words: dopamine--cyclodextrin;  α-tocopherol; host-guest inclusion complex; encapsulation  rate;
                 controlled release; antioxidant capacity; drug materials



                 α-生育酚(α-Tocopherol,α-TOC)是自然界中                架寿命短等缺陷,当前 α-TOC 主要以酯化的形式应
                                                                             [8]
            最活跃和最重要的脂溶性抗氧化剂                 [1-4] ,对诸如心脏       用于疾病管理中 ,然而这种非天然的改性产物不
            病、癌症、认知能力下降及早衰等疾病管理具有显                             但难以被患者吸收,同时还造成了严重的体内毒副作
                                                                 [1]
            著的治疗功效       [5-7] 。由于 α-TOC 具有稳定性差、货              用 。因此,维持 α-TOC 的天然结构和本征属性对


                 收稿日期:2020-02-07;  定用日期:2020-03-24; DOI: 10.13550/j.jxhg.20200082
                 基金项目:中央高校基本科研基金(JUSRP21937,JUSRP11931)
                 作者简介:张冬梅(1985—),女,博士生,E-mail:zdm228@163.com。联系人:杨   成(1970—),男,教授,E-mail:cyang@jiangnan.edu.cn。
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