CN106932425A - 一种反式七元瓜环iQ[7]的应用及制备方法 - Google Patents
一种反式七元瓜环iQ[7]的应用及制备方法 Download PDFInfo
- Publication number
- CN106932425A CN106932425A CN201710058697.1A CN201710058697A CN106932425A CN 106932425 A CN106932425 A CN 106932425A CN 201710058697 A CN201710058697 A CN 201710058697A CN 106932425 A CN106932425 A CN 106932425A
- Authority
- CN
- China
- Prior art keywords
- product
- trans
- uril
- cucurbit
- nuclear magnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- ZDOBFUIMGBWEAB-XGFHMVPTSA-N cucurbit[7]uril Chemical compound N1([C@H]2[C@H]3N(C1=O)CN1[C@H]4[C@H]5N(C1=O)CN1[C@H]6[C@H]7N(C1=O)CN1[C@H]8[C@H]9N(C1=O)CN1[C@H]%10[C@H]%11N(C1=O)CN([C@@H]1N(C%12=O)CN%11C(=O)N%10CN9C(=O)N8CN7C(=O)N6CN5C(=O)N4CN3C(=O)N2C2)C3=O)CN4C(=O)N5[C@H]6[C@@H]4N2C(=O)N6CN%12[C@@H]1N3C5 ZDOBFUIMGBWEAB-XGFHMVPTSA-N 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 6
- KDXKERNSBIXSRK-UHFFFAOYSA-N Lysine Natural products NCCCCC(N)C(O)=O KDXKERNSBIXSRK-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000004472 Lysine Substances 0.000 claims abstract description 31
- HNDVDQJCIGZPNO-UHFFFAOYSA-N histidine Natural products OC(=O)C(N)CC1=CN=CN1 HNDVDQJCIGZPNO-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000004475 Arginine Substances 0.000 claims abstract description 27
- ODKSFYDXXFIFQN-UHFFFAOYSA-N arginine Natural products OC(=O)C(N)CCCNC(N)=N ODKSFYDXXFIFQN-UHFFFAOYSA-N 0.000 claims abstract description 27
- HNDVDQJCIGZPNO-YFKPBYRVSA-N L-histidine Chemical compound OC(=O)[C@@H](N)CC1=CN=CN1 HNDVDQJCIGZPNO-YFKPBYRVSA-N 0.000 claims abstract description 25
- 150000001413 amino acids Chemical class 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 9
- ODKSFYDXXFIFQN-BYPYZUCNSA-P L-argininium(2+) Chemical compound NC(=[NH2+])NCCC[C@H]([NH3+])C(O)=O ODKSFYDXXFIFQN-BYPYZUCNSA-P 0.000 claims abstract description 6
- KDXKERNSBIXSRK-YFKPBYRVSA-N L-lysine Chemical compound NCCCC[C@H](N)C(O)=O KDXKERNSBIXSRK-YFKPBYRVSA-N 0.000 claims abstract description 6
- 239000000047 product Substances 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 12
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical group N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- 238000004821 distillation Methods 0.000 claims description 6
- 239000012153 distilled water Substances 0.000 claims description 6
- 239000000706 filtrate Substances 0.000 claims description 6
- 239000002244 precipitate Substances 0.000 claims description 6
- 238000005138 cryopreservation Methods 0.000 claims description 5
- 229930182470 glycoside Natural products 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 229930040373 Paraformaldehyde Natural products 0.000 claims description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 3
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 3
- 239000004202 carbamide Substances 0.000 claims description 3
- 125000002091 cationic group Chemical group 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 150000002338 glycosides Chemical class 0.000 claims description 3
- 229920002866 paraformaldehyde Polymers 0.000 claims description 3
- 229920001467 poly(styrenesulfonates) Polymers 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000000967 suction filtration Methods 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 claims 1
- 239000006210 lotion Substances 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 3
- 235000018977 lysine Nutrition 0.000 description 26
- 235000014304 histidine Nutrition 0.000 description 23
- 235000009697 arginine Nutrition 0.000 description 21
- 235000001014 amino acid Nutrition 0.000 description 20
- 239000000243 solution Substances 0.000 description 14
- 238000004448 titration Methods 0.000 description 13
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 235000018102 proteins Nutrition 0.000 description 4
- 108090000623 proteins and genes Proteins 0.000 description 4
- 102000004169 proteins and genes Human genes 0.000 description 4
- 238000005160 1H NMR spectroscopy Methods 0.000 description 3
- 241001269238 Data Species 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 3
- 150000002678 macrocyclic compounds Chemical class 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910021642 ultra pure water Inorganic materials 0.000 description 3
- 239000012498 ultrapure water Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 150000003983 crown ethers Chemical class 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229920000858 Cyclodextrin Polymers 0.000 description 1
- QNAYBMKLOCPYGJ-UWTATZPHSA-N D-alanine Chemical compound C[C@@H](N)C(O)=O QNAYBMKLOCPYGJ-UWTATZPHSA-N 0.000 description 1
- QNAYBMKLOCPYGJ-UHFFFAOYSA-N D-alpha-Ala Natural products CC([NH3+])C([O-])=O QNAYBMKLOCPYGJ-UHFFFAOYSA-N 0.000 description 1
- QNAYBMKLOCPYGJ-REOHCLBHSA-N L-alanine Chemical compound C[C@H](N)C(O)=O QNAYBMKLOCPYGJ-REOHCLBHSA-N 0.000 description 1
- 235000004279 alanine Nutrition 0.000 description 1
- 235000019728 animal nutrition Nutrition 0.000 description 1
- 150000001449 anionic compounds Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 125000004429 atom Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 230000008827 biological function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- VTJUKNSKBAOEHE-UHFFFAOYSA-N calixarene Chemical class COC(=O)COC1=C(CC=2C(=C(CC=3C(=C(C4)C=C(C=3)C(C)(C)C)OCC(=O)OC)C=C(C=2)C(C)(C)C)OCC(=O)OC)C=C(C(C)(C)C)C=C1CC1=C(OCC(=O)OC)C4=CC(C(C)(C)C)=C1 VTJUKNSKBAOEHE-UHFFFAOYSA-N 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000006911 enzymatic reaction Methods 0.000 description 1
- 235000020776 essential amino acid Nutrition 0.000 description 1
- 239000003797 essential amino acid Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 150000002411 histidines Chemical class 0.000 description 1
- -1 hydrocarbon Chemical class 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 229910001412 inorganic anion Inorganic materials 0.000 description 1
- 150000002669 lysines Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000005649 metathesis reaction Methods 0.000 description 1
- 238000007479 molecular analysis Methods 0.000 description 1
- 230000005311 nuclear magnetism Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 108090000765 processed proteins & peptides Proteins 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- HFHDHCJBZVLPGP-UHFFFAOYSA-N schardinger α-dextrin Chemical compound O1C(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(O)C2O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC2C(O)C(O)C1OC2CO HFHDHCJBZVLPGP-UHFFFAOYSA-N 0.000 description 1
- 238000001338 self-assembly Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N24/00—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
- G01N24/08—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
- G01N25/48—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on solution, sorption, or a chemical reaction not involving combustion or catalytic oxidation
Abstract
本发明公开了一种反式七元瓜环iQ[7]的应用及制备方法。所述的反式七元瓜环iQ[7]用于识别赖氨酸、精氨酸或组氨酸。本发明能够有效识别人体必需的10种氨基酸中的精氨酸、赖氨酸、组氨酸,对揭示生命现象和过程意义重大,具有广泛的应用前景。
Description
技术领域
本发明涉及超分子化学领域,尤其涉及一种反式七元瓜环iQ[7]的应用及制备方法。
背景技术
瓜环作为一类大环化合物,是由苷脲单元通过亚甲基桥联起来的大环笼状化合物,其结构特征为具有两端开口的空腔,其两端口大小相同,端口直径小于空腔直径。瓜环两端口分别分布着与其结构单元数相同的羰基氧原子,形成了阳离子键结合位点,所以能与亲水性的物质、金属离子等相互作用;而其空腔是疏水性的,不仅可以包结有机分子,还可以包结无机小分子,无机阴离子。与冠醚、环糊精、杯芳烃等大环分子相比,瓜环具有更强的结构刚性,不容易改变自身形状以适合客体分子,所以能根据自身空腔的大小,选择性的容纳尺寸、形状相匹配的客体分子。早在2005年,Isaacs和Kim研究组从混合瓜环中通过硅胶色谱柱分离出来了反式六元瓜环(iQ[6])以及反式七元瓜环(iQ[7])。但产率非常低,仅获得2.0%(iQ[6])以及0.4%(iQ[7])的产率。正是由于低的产率以及很难分离纯化,抑制了反式瓜环的发展。
氨基酸(amino acid)是生物功能大分子蛋白质的基本组成单位,构成动物营养所需蛋白质的基本物质,其分子结构(例如手性和侧链结构)是生命中最基本的分子信息。人体缺乏任何一种必需氨基酸和某些非必需氨基酸就可导致生理功能异常,影响机体代谢的正常进行,最后导致疾病。氨基酸中与羧基直接相连的碳原子上有个氨基,这个碳原子上连的基团或原子都不一样,称手性碳原子,当一束偏振光通过它们时,光的偏振方向将被旋转,根据旋光性的不同,分为左旋和右旋,即L系和D系,如D-丙氨酸是右旋的和丙氨酸是左旋的,恰似左、右手,互为镜像。而构成天然蛋白质的氨基酸都是L系。注意,一般称D型、L型。生物界各种蛋白质(除一些细菌的细胞壁中的短肽和个别抗生素外)几乎都是由氨基酸所构成的,含D-氨基酸的极少。
分子识别最初是被用来在分子研究生物体系中的化学问题而提出的。分子识别通过变换和易位过程产生催化作用,在生物体系中,是理解酶反应、信息传递和不同介质间物种能量转移现象的信息来源,在分析化学领域则是构成分离、检测和定量测定的基础超分子包结物的形成则是建立在分子识别的基础之上。
基于氨基酸在生物界的重要作用,iQ[7]这一新型大环化合物的特性,以及杯芳烃,柱芳烃,冠醚等与氨基酸的超分子自组装,我们探索了iQ[7]与氨基酸之间的超分子自组装,及其分子识别性能的研究。
发明内容
本发明的目的是提供一种反式七元瓜环iQ[7]的应用及制备方法,本发明能够有效识别人体必需的10种氨基酸中的精氨酸、赖氨酸、组氨酸,对揭示生命现象和过程意义重大,具有广泛的应用前景。
本发明是这样实现的:一种反式七元瓜环iQ[7],用于识别赖氨酸、精氨酸或组氨酸,识别方法如下:
a.将iQ[7]放入核磁管中,加入D2O溶解,得A品;
b.将赖氨酸、精氨酸或组氨酸放于冻存管中,加入D2O溶解,得B品;
c.将B品逐次加入A品中,每滴加一次就会出现一张相对应的核磁谱图,随着核磁管中的氨基酸量的增加:
若图谱中出现5组信号峰H1、H2、H3、H4和H5,与对应识别的赖氨酸核磁谱图比较,5组信号峰均往低场移动、H2和H4信号峰裂分为两组峰且也往低场移动,则对应识别的氨基酸为赖氨酸;
若图谱中出现一组信号峰H1和H4,与对应识别的精氨酸核磁谱图比较,H1、H4往低场移动、H2和H3信号峰裂分为两组峰且也往低场移动,则对应识别的氨基酸为精氨酸;
若图谱中出现5组信号峰H1、H2、H3、H4和H5,与对应识别的组氨酸核磁谱图比较,5组信号峰均往低场移动,则对应识别的氨基酸为组氨酸。
前述的反式七元瓜环iQ[7]按下述步骤制备:
a.将苷脲和多聚甲醛按重量比2~3:1~1.5混合加入冰镇的浓盐酸介质中,在100~120℃加热回流5~6小时,冷却,得A品;
b.将A品冷却到室温,向A品中边加少量蒸馏水边搅拌,然后静置沉淀,静置时间18~24h,得淡黄色沉淀,然后抽滤,滤渣为多种瓜环的混合物,然后再向滤液中加入少量蒸馏水,重复上述步骤,直至加蒸馏水无沉淀析出,滤液为淡黄色透明液体,即B品;
c.将B品浓缩,后再加蒸馏水,过滤除去白色沉淀,多次重复此操作,最终得到浓缩液,即C品;
d.将C品装填到Dowex阳离子型交换树脂柱上,再用水:乙酸体积比为1~2:1~1.5的淋洗液淋洗,并不断向淋洗液中加入盐酸调节淋洗液的酸度,使淋洗液的酸度在≤4M;
e.将从柱子里流出的淋洗液,通过选装蒸发仪蒸干,得固体为反式七元瓜环iQ[7]纯品。
有益效果
与现有技术相比,本发明能够有效识别人体必需的10种氨基酸中的精氨酸、赖氨酸、组氨酸,对揭示生命现象和过程意义重大,具有广泛的应用前景。
为了进一步验证本发明具有该识别功能,发明人做了等温滴定量热实验。
反式七元瓜环iQ[7]与赖氨酸的等温滴定量热:
赖氨酸配成1.00×10-3mol/L的溶液,iQ[7]配成1.00×10-4mol/L的溶液.在水溶液中用赖氨酸滴定iQ[7],采用Nano ITC等温滴定量热议测定iQ[7]与赖氨酸在25℃时的平衡常数及热力学参数.样品池中加入1.3mL(0.1mmol/L)的iQ[7]水溶液,赖氨酸(1.0mmol/L)4μL/滴,间隔时间为250s,搅拌速度为250r/min,以水为参比滴定20次.实验数据由NanoITC仪器所配置软件Launch Nano Analyze进行拟合分析。实验结果如图5及表1所示,其中,反式七元瓜环iQ[7]与赖氨酸的结合常数为(5.49±0.15)×104M-1,焓变-31.22±14.00(kJ/mol),吉布斯自由能为-27.05(kJ/mol),说明反式七元瓜环iQ[7]与赖氨酸可以行成稳定的超分子配合物。
反式七元瓜环iQ[7]与精氨酸的等温滴定量热:精氨酸配成1.00×10-3mol/L的溶液,iQ[7]配成1.00×10-4mol/L的溶液.在水溶液中用精氨酸滴定iQ[7],采用Nano ITC等温滴定量热议测定iQ[7]与精氨酸在25℃时的平衡常数及热力学参数.样品池中加入1.3mL(0.1mmol/L)的iQ[7]水溶液,精氨酸(1.0mmol/L)4μL/滴,间隔时间为250s,搅拌速度为250r/min,以水为参比滴定20次.实验数据由Nano ITC仪器所配置软件Launch NanoAnalyze进行拟合分析。实验结果如图6及表1所示,其中,反式七元瓜环iQ[7]与赖氨酸的结合常数为(8.60±0.97)×104M-1,焓变-32.40±9.55(kJ/mol),吉布斯自由能为-28.17(kJ/mol),说明反式七元瓜环iQ[7]与精氨酸可以行成稳定的超分子配合物。
反式七元瓜环iQ[7]与组氨酸的等温滴定量热:
组氨酸配成1.00×10-3mol/L的溶液,iQ[7]配成1.00×10-4mol/L的溶液.在水溶液中用组氨酸滴定iQ[7],采用Nano ITC等温滴定量热议测定iQ[7]与组氨酸在25℃时的平衡常数及热力学参数.样品池中加入1.3mL(0.1mmol/L)的iQ[7]水溶液,组氨酸(1.0mmol/L)4μL/滴,间隔时间为250s,搅拌速度为250r/min,以水为参比滴定20次.实验数据由NanoITC仪器所配置软件Launch Nano Analyze进行拟合分析。实验结果如图7及表1所示,其中,反式七元瓜环iQ[7]与赖氨酸的结合常数为(3.46±0.16)×104M-1,焓变-33.84±10.98(kJ/mol),吉布斯自由能为-25.91(kJ/mol),说明反式七元瓜环iQ[7]与组氨酸可以行成稳定的超分子配合物。
表1反式七元瓜环iQ[7]与赖氨酸,精氨酸,组氨酸的等温滴定量热数据
综上所述,本发明能够有效识别精氨酸、赖氨酸和组氨酸。
附图说明
图1为主体分子反式七元瓜环iQ[7]的结构图;
图2为反式七元瓜环iQ[7]与赖氨酸的1H NMR滴定图(500MHz,D2O);
图3为反式七元瓜环iQ[7]与精氨酸的1H NMR滴定图(500MHz,D2O);
图4为反式七元瓜环iQ[7]与组氨酸的1H NMR滴定图(500MHz,D2O);
图5为反式七元瓜环iQ[7]与赖氨酸的等温滴定量热图(ITC,溶剂为超纯水);
图6为反式七元瓜环iQ[7]与精氨酸的等温滴定量热图(ITC,溶剂为超纯水);
图7为反式七元瓜环iQ[7]与组氨酸的等温滴定量热图(ITC,溶剂为超纯水)。
具体实施方式
实施例1。一种反式七元瓜环iQ[7]按下述步骤制备:
a.将苷脲和多聚甲醛按重量比2~3:1~1.5混合加入冰镇的浓盐酸介质中,在100~120℃加热回流5~6小时,冷却,得A品;
b.将A品冷却到室温,向A品中边加少量蒸馏水边搅拌,然后静置沉淀,静置时间18~24h,得淡黄色沉淀,然后抽滤,滤渣为多种瓜环的混合物,然后再向滤液中加入少量蒸馏水,重复上述步骤,直至加蒸馏水无沉淀析出,滤液为淡黄色透明液体,即B品;
c.将B品浓缩,后再加蒸馏水,过滤除去白色沉淀,多次重复此操作,最终得到浓缩液,即C品;
d.将C品装填到Dowex阳离子型交换树脂柱上,再用水:乙酸体积比为1~2:1~1.5的淋洗液淋洗,并不断向淋洗液中加入盐酸调节淋洗液的酸度,使淋洗液的酸度在≤4M;
e.将从柱子里流出的淋洗液,通过选装蒸发仪蒸干,得固体为反式七元瓜环iQ[7]纯品;所述的结构图如图1所示。
实施例2。一种反式七元瓜环iQ[7]的应用,是用于识别赖氨酸,识别方法如下:
a.称取反式七元瓜环iQ[7]2mg放入核磁管中,加入0.6mL D2O震荡,使其溶解,得反式七元瓜环iQ[7]溶液;
b.称取2mg赖氨酸放于冻存管中,加入1.0mL D2O使其溶解,得赖氨酸溶液;
c.将步骤b制备得到的赖氨酸溶液用移液枪逐次加入核磁管中,每滴加一次就会出现一张相对应的核磁谱图,随着核磁管中的赖氨酸量的增加,图谱中出现5组信号峰H1、H2、H3、H4、H5,与赖氨酸核磁谱图比较,5组信号峰均往低场移动;H2,H4信号峰裂分为两组峰,且也往低场移动(如图2所示),则说明该氨基酸为赖氨酸,若为其他情况,则说明该氨基酸不是赖氨酸。
实施例3。一种反式七元瓜环iQ[7]的应用,是用于识别精氨酸,识别方法如下:
a.称取反式七元瓜环iQ[7]2mg放入核磁管中,加入0.6mL D2O震荡,使其溶解,得反式七元瓜环iQ[7]溶液;
b.称取2mg精氨酸放于冻存管中,加入1.0mL D2O使其溶解,得精氨酸溶液;
c.将步骤b制备得到的精氨酸溶液用移液枪逐次加入核磁管中,每滴加一次就会出现一张相对应的核磁谱图,随着核磁管中的精氨酸量的增加,图谱中出现一组信号峰H1、H4,与精氨酸核磁谱图比较,H1、H4往低场移动;H2,H3信号峰裂分为两组峰,且也往低场移动(如图3所示),则说明该氨基酸为精氨酸,若为其他情况,则说明该氨基酸不是精氨酸。
实施例4。一种反式七元瓜环iQ[7]的应用,是用于识别组氨酸,识别方法如下:
a.称取反式七元瓜环iQ[7]2mg放入核磁管中,加入0.6mL D2O震荡,使其溶解,得反式七元瓜环iQ[7]溶液;
b.称取2mg组氨酸放于冻存管中,加入1.0mL D2O使其溶解,得组氨酸溶液;
c.将步骤b制备得到的组氨酸溶液用移液枪逐次加入核磁管中,每滴加一次就会出现一张相对应的核磁谱图,随着核磁管中的组氨酸量的增加,图谱中出现5组信号峰H1、H2、H3、H4、H5,与组氨酸核磁谱图比较,5组信号峰均往低场移动;(如图4所示),则说明该氨基酸为组氨酸,若为其他情况,则说明该氨基酸不是组氨酸。
Claims (2)
1.一种反式七元瓜环iQ[7]的应用,其特征在于,用于识别赖氨酸、精氨酸或组氨酸,识别方法如下:
a.将iQ[7]放入核磁管中,加入D2O溶解,得A品;
b.将赖氨酸、精氨酸或组氨酸放于冻存管中,加入D2O溶解,得B品;
c.将B品逐次加入A品中,每滴加一次就会出现一张相对应的核磁谱图,随着核磁管中的氨基酸量的增加:
若图谱中出现5组信号峰H1、H2、H3、H4和H5,与对应识别的赖氨酸核磁谱图比较,5组信号峰均往低场移动、H2和H4信号峰裂分为两组峰且也往低场移动,则对应识别的氨基酸为赖氨酸;
若图谱中出现一组信号峰H1和H4,与对应识别的精氨酸核磁谱图比较,H1、H4往低场移动、H2和H3信号峰裂分为两组峰且也往低场移动,则对应识别的氨基酸为精氨酸;
若图谱中出现5组信号峰H1、H2、H3、H4和H5,与对应识别的组氨酸核磁谱图比较,5组信号峰均往低场移动,则对应识别的氨基酸为组氨酸。
2.根据权利要求1所述的反式七元瓜环iQ[7]的制备方法,其特征在于,按下述步骤制备:
a.将苷脲和多聚甲醛按重量比2~3:1~1.5混合加入冰镇的浓盐酸介质中,在100~120℃加热回流5~6小时,冷却,得A品;
b.将A品冷却到室温,向A品中边加少量蒸馏水边搅拌,然后静置沉淀,静置时间18~24h,得淡黄色沉淀,然后抽滤,滤渣为多种瓜环的混合物,然后再向滤液中加入少量蒸馏水,重复上述步骤,直至加蒸馏水无沉淀析出,滤液为淡黄色透明液体,即B品;
c.将B品浓缩,后再加蒸馏水,过滤除去白色沉淀,多次重复此操作,最终得到浓缩液,即C品;
d.将C品装填到Dowex阳离子型交换树脂柱上,再用水:乙酸体积比为1~2:1~1.5的淋洗液淋洗,并不断向淋洗液中加入盐酸调节淋洗液的酸度,使淋洗液的酸度在≤4M;
e.将从柱子里流出的淋洗液,通过选装蒸发仪蒸干,得固体为反式七元瓜环iQ[7]纯品。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710058697.1A CN106932425B (zh) | 2017-01-23 | 2017-01-23 | 一种反式七元瓜环iQ[7]的应用 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710058697.1A CN106932425B (zh) | 2017-01-23 | 2017-01-23 | 一种反式七元瓜环iQ[7]的应用 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN106932425A true CN106932425A (zh) | 2017-07-07 |
CN106932425B CN106932425B (zh) | 2018-07-31 |
Family
ID=59423979
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710058697.1A Expired - Fee Related CN106932425B (zh) | 2017-01-23 | 2017-01-23 | 一种反式七元瓜环iQ[7]的应用 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106932425B (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109239035A (zh) * | 2018-09-18 | 2019-01-18 | 贵州大学 | 一种基于十元瓜环的超分子框架材料在甲醛检测中的应用 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000068232A1 (en) * | 1999-05-07 | 2000-11-16 | Unisearch Limited | Cucurbiturils and method for synthesis |
CN101108851A (zh) * | 2007-07-11 | 2008-01-23 | 贵州大学 | 一种瓜环及取代瓜环的合成方法 |
WO2012054639A2 (en) * | 2010-10-22 | 2012-04-26 | T2 Biosystems, Inc. | Nmr systems and methods for the rapid detection of analytes |
CN103351399A (zh) * | 2013-07-30 | 2013-10-16 | 贵州大学 | 反式六元瓜环的合成、分离方法 |
WO2013180961A1 (en) * | 2012-06-01 | 2013-12-05 | Liposcience, Inc. | Nmr quantification of tmao |
CN103713004A (zh) * | 2013-11-08 | 2014-04-09 | 菏泽步长制药有限公司 | 一种中药注射液的核磁共振检测方法 |
CN104151327A (zh) * | 2014-08-25 | 2014-11-19 | 贵州大学 | 反式七元瓜环的合成分离方法 |
-
2017
- 2017-01-23 CN CN201710058697.1A patent/CN106932425B/zh not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000068232A1 (en) * | 1999-05-07 | 2000-11-16 | Unisearch Limited | Cucurbiturils and method for synthesis |
CN101108851A (zh) * | 2007-07-11 | 2008-01-23 | 贵州大学 | 一种瓜环及取代瓜环的合成方法 |
WO2012054639A2 (en) * | 2010-10-22 | 2012-04-26 | T2 Biosystems, Inc. | Nmr systems and methods for the rapid detection of analytes |
WO2013180961A1 (en) * | 2012-06-01 | 2013-12-05 | Liposcience, Inc. | Nmr quantification of tmao |
CN103351399A (zh) * | 2013-07-30 | 2013-10-16 | 贵州大学 | 反式六元瓜环的合成、分离方法 |
CN103713004A (zh) * | 2013-11-08 | 2014-04-09 | 菏泽步长制药有限公司 | 一种中药注射液的核磁共振检测方法 |
CN104151327A (zh) * | 2014-08-25 | 2014-11-19 | 贵州大学 | 反式七元瓜环的合成分离方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109239035A (zh) * | 2018-09-18 | 2019-01-18 | 贵州大学 | 一种基于十元瓜环的超分子框架材料在甲醛检测中的应用 |
CN109239035B (zh) * | 2018-09-18 | 2021-04-13 | 贵州大学 | 一种基于十元瓜环的超分子框架材料在甲醛检测中的应用 |
Also Published As
Publication number | Publication date |
---|---|
CN106932425B (zh) | 2018-07-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Liu et al. | A review on the use of ionic liquids in preparation of molecularly imprinted polymers for applications in solid-phase extraction | |
Liu et al. | A new magnetic molecularly imprinted polymer based on deep eutectic solvents as functional monomer and cross-linker for specific recognition of bovine hemoglobin | |
CN102898566B (zh) | 一种富集痕量速灭威的金属有机框架分子印迹聚合物的制备方法 | |
Chen et al. | Atrazine molecular imprinted polymers: comparative analysis by far-infrared and ultraviolet induced polymerization | |
Li et al. | Smart bio-separation materials | |
CN102532408B (zh) | 一种温敏型磁性蛋白质印迹纳米球的制备方法 | |
Shah et al. | A brief overview of molecularly imprinted polymers: From basics to applications | |
CN106117219B (zh) | 一种十四元瓜环tQ[14]的应用 | |
Liang et al. | Advances in chirality sensing with macrocyclic molecules | |
Chen et al. | Synthesis and characterization of photo‐responsive magnetic molecularly imprinted microspheres for the detection of sulfonamides in aqueous solution | |
Zhao et al. | Selective isolation of hemoglobin by use of imidazolium-modified polystyrene as extractant | |
CN106932425A (zh) | 一种反式七元瓜环iQ[7]的应用及制备方法 | |
Yu et al. | β-Cyclodextrin-based poly (ionic liquids) membranes enable the efficient separation of the amino acids mixture | |
CN108676554B (zh) | 一种复合纳米探针及其制备方法以及应用 | |
Zhou et al. | Temperature-triggered switchable helix-helix inversion of poly (phenylacetylene) bearing L-valine ethyl ester pendants and its chiral recognition ability | |
CN108864364B (zh) | 一种l-苯丙氨酸分子印迹聚合物的制备方法 | |
CN103267822A (zh) | 一种牛乳铁蛋白定量检测试剂盒及其应用 | |
CN106018370B (zh) | 含酶偶联核酸-银纳米探针的胃癌检测试剂盒 | |
Maity et al. | A generalized method for metal fixation in horse spleen L-ferritin cage | |
Ma et al. | Functional ionic liquids as chiral selector for visual chiral sensing and enantioselective precipitate | |
CN105367711A (zh) | 一种分子印迹聚合物及其制备方法 | |
Wang et al. | Separation of low-molecular-weight organics by water-soluble macrocyclic arenes | |
CN105400855A (zh) | 一种基于蛋白质可逆固定的两步酶解鉴定方法 | |
Xiao et al. | Research progress of molecular imprinting technology | |
Hu et al. | Protein target discovery of drug and its reactive intermediate metabolite by using proteomic strategy |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180731 |