CN111747889B - 一种含多个配位点的NNO型喹啉Fe(II)配合物及其制备方法和应用 - Google Patents
一种含多个配位点的NNO型喹啉Fe(II)配合物及其制备方法和应用 Download PDFInfo
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- 239000003446 ligand Substances 0.000 claims abstract description 35
- FNHAXMUPPCVGHM-UHFFFAOYSA-N n-(quinolin-2-ylmethylideneamino)benzamide Chemical group C=1C=C2C=CC=CC2=NC=1C=NNC(=O)C1=CC=CC=C1 FNHAXMUPPCVGHM-UHFFFAOYSA-N 0.000 claims abstract description 25
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- C07D215/00—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
- C07D215/02—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
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Abstract
本发明公开了一种含多个配位点的NNO型喹啉Fe(II)配合物及其制备方法和应用,该配合物为喹啉‑2‑甲醛‑苯甲酰腙Fe(II)配合物,分子式为Fe(C17H12ON3)2。本发明以含三个配位点的NNO型喹啉‑2‑甲醛‑苯甲酰腙作为螯合配体,以Fe(II)作为中心金属离子,通过溶液中的自组装反应制备NNO型喹啉Fe(II)配合物,有效解决了新型喹啉类衍生物作为配体,与过渡金属Fe(II)结合的问题。本发明制备的喹啉‑2‑甲醛‑苯甲酰腙Fe(II)配合物,对DPPH自由基具有较强的清除作用,清除率远远高于维生素E和对照例的喹啉铁(II)配合物。该实验表明,本发明配合物具有优异的体外抗氧化作用,可有效用于制备抗衰老药物,有望进一步研究药理和生理活性。
Description
技术领域
本发明涉及一种含多个配位点的NNO型喹啉Fe(II)配合物及其制备方法和应用,属于医药领域。
背景技术
自由基贯穿于人类的生命活动,人体内的自由基处于不断产生且不断清除的动态平衡中。体内的自由基可以引起DNA、脂类、蛋白质等其他生物分子的损伤,从而进一步引发老年痴呆症、帕金森症、颅脑损伤、心脏病、癌症等疾病。抗氧剂因为它独特的功效,能够快捷、有效地清除自由基,可达到延缓人体衰老和预防某些疾病的目的,因此吸引了大量学者对抗氧化剂进行研究。
N杂环是一类具有多种生物活性的重要化合物,例如:抗氧化,抗肿瘤,抗炎等。据文献报道,N杂环化合物之一的喹啉类化合物(以喹啉环为骨架合成的部分衍生物)可作为酪氨酸激酶(EGFR)抑制剂、c-MET抑制剂、微管蛋白聚合(Tubulin)抑制剂等发挥优良的抗肿瘤活性。与过渡金属离子形成配合物后,可提高对肿瘤细胞的抑制作用,增强生物活性。并且,许多Cu(II)、Zn(II)等过渡金属的络合物具有明显的抗氧化活性。铁是生命体中重要的微量元素,细胞内铁的缺失会导致贫血、糖尿病、心脏病以及肾脏和肝脏的损伤等;帕金森氏症、阿兹海默症等许多神经变性疾病都与Fe(II)浓度异常直接相关。因此,成功合成新型喹啉类衍生物并构筑其金属Fe(II)配合物,是寻找安全、高效的抗氧剂的有效途径。
发明内容
为解决上述问题,本发明的目的是提供一种含多个配位点的NNO型喹啉Fe(II)配合物及其制备方法和应用,该配合物制备方法简单,具有较好的抗氧化作用。
为了实现上述目的,本发明的技术方案之一是:
一种含多个配位点的NNO型喹啉Fe(II)配合物,该配合物为喹啉-2-甲醛-苯甲酰腙Fe(II)配合物,分子式为Fe(C17H12ON3)2;其中,C17H12ON3为配体喹啉-2-甲醛-苯甲酰腙,其分子结构式为:
配体喹啉-2-甲醛-苯甲酰腙的制备方法,包括以下步骤:
(1)将1mmol喹啉-2-甲醛与1mmol苯甲酰肼分别溶于甲醇中,然后混合,并滴加2滴冰醋酸,回流反应2h,得到淡黄色澄清液;
(2)将淡黄色澄清液减压浓缩,析出沉淀,抽滤,得到粗品;
(3)将粗品用乙醚洗涤,得到白色粉末,即为配体喹啉-2-甲醛-苯甲酰腙。
本发明的技术方案之一是:一种NNO型喹啉Fe(II)配合物的制备方法,包括以下步骤:
(1)将配体喹啉-2-甲醛-苯甲酰腙,溶于甲醇中,并加入氢氧化钠,得到配体溶液;
(2)将高氯酸亚铁水合物,溶于甲醇中,得到Fe(II)盐溶液;
(3)将配体溶液和Fe(II)盐溶液过滤,然后混合并密封,室温下相互扩散反应,直至析出灰色薄片状晶体,即为NNO型喹啉Fe(II)配合物。
配体喹啉-2-甲醛-苯甲酰腙、氢氧化钠和高氯酸亚铁水合物的摩尔比为2:2:1。
本发明的技术方案之一是:一种NNO型喹啉Fe(II)配合物在清除DPPH自由基方面的应用。
本发明的技术方案之一是:一种NNO型喹啉Fe(II)配合物在制备清除DPPH自由基药物方面的应用。
本发明的技术方案之一是:一种NNO型喹啉Fe(II)配合物在制备抗氧化药物方面的应用。
本发明的技术方案之一是:一种NNO型喹啉Fe(II)配合物在制备抗衰老药物方面的应用。
本发明的有益效果:
1、本发明以含三个配位点的NNO型喹啉-2-甲醛-苯甲酰腙作为螯合配体,以Fe(II)作为中心金属离子,通过溶液中的自组装反应制备NNO型喹啉Fe(II)配合物,有效解决了新型喹啉类衍生物作为配体,与过渡金属Fe(II)结合的问题。
2、本发明制备的喹啉-2-甲醛-苯甲酰腙Fe(II)配合物,对DPPH自由基具有较强的清除作用,清除率远远高于维生素E和对照例的喹啉铁(II)配合物。该实验表明,本发明配合物具有优异的体外抗氧化作用。
3、本发明的制备方法简单、操作方便,生产成本低,易于工艺化推广,具有很好的社会和经济效益。
附图说明
图1为本发明配体喹啉-2-甲醛-苯甲酰腙的红外结果图。
图2为本发明配合物Fe(C17H12ON3)2的红外结果图。
图3为本发明配合物Fe(C17H12ON3)2的主体分子结构图。
图4为本发明配合物Fe(C17H12ON3)2的堆积图。
图5为对照例配合物[Fe(C14H11N5)2].BF4 .CH3OH.3H2O的主体分子结构图。
图6为本发明配体、配合物及对照品维生素E对DPPH自由基的清除率的折线图。
具体实施方式
以下结合实施例对本发明的具体实施方式作进一步详细说明。
实施例1
喹啉-2-甲醛-苯甲酰腙,其分子结构式为:
喹啉-2-甲醛-苯甲酰腙的制备方法,包括以下步骤:
(1)将1mmol喹啉-2-甲醛与1mmol苯甲酰肼分别溶于10mL甲醇中,然后混合,并滴加2滴冰醋酸作为催化剂,65℃回流反应2h,得到淡黄色澄清液;
(2)将淡黄色澄清液减压浓缩,析出沉淀,抽滤,得到粗品;
(3)将粗品用乙醚洗涤,得到白色粉末,即为配体喹啉-2-甲醛-苯甲酰腙。
所制备的喹啉-2-甲醛-苯甲酰腙,红外光谱(cm-1,KBr):3723,3392,3190,3064,1923,1824,1597,1582,1559,1505,1494,1463,1431,1358,1325,1314,1289,1264,1241,1209,1185,1144,1118,1076,1028,1001,956,924,875,837,801,790,780,770,750,697,674,625,586,523,477(如图1所示)。
实施例2
含多个配位点的NNO型喹啉Fe(II)配合物为喹啉-2-甲醛-苯甲酰腙Fe(II)配合物,分子式为Fe(C17H12ON3)2;其中,C17H12ON3为配体喹啉-2-甲醛-苯甲酰腙,其分子结构式为:
NNO型喹啉Fe(II)配合物的制备方法,包括以下步骤:
(1)准确称取0.1mmol配体喹啉-2-甲醛-苯甲酰腙,溶于10mL甲醇中,并加入0.1mmol氢氧化钠作碱,得到配体溶液;
(2)准确称取0.05mmol高氯酸亚铁水合物,溶于10mL甲醇中,得到Fe(II)盐溶液;
(3)将配体溶液和Fe(II)盐溶液过滤,然后混合并密封,此时,Fe(II)盐溶液置于下层,配体溶液置于上层,室温下相互扩散反应,约一周后析出灰色薄片状晶体,即为NNO型喹啉Fe(II)配合物。
本发明配合物的红外光谱(cm-1,KBr):3723,3392,3190,3064,1923,1824,1597,1582,1559,1505,1494,1463,1431,1358,1325,1314,1289,1264,1241,1209,1185,1144,1118,1076,1028,1001,956,924,875,837,801,790,780,770,750,697,674,625,586,523,477(如图2所示)。
本发明配合物的X射线单晶衍射结构的实验条件和结果如下:
单晶结构数据在带有石墨单色器的SuperNova Dual衍射仪上测定。选择合适大小(0.2×0.15×0.05mm3)的晶体固定在玻璃毛上收集晶体数据。采用CuKα射线 和ω扫描方式,在3.58<θ<77.086°范围内收集到9159个衍射点,其中独立衍射点个数为5536(Rint=0.0638)。经验吸收校正采用SADABS程序。化合物的分子结构由直接法解出,用SHELXTL全矩阵最小二乘法精修。所有的非氢原子采用各向异性热参数精修,最后用理论加氢法确定氢原子的位置。
所制备的NNO型喹啉Fe(II)配合物的详细晶体测定数据见表1,重要的键长和键角数据见表2,晶体结构见图3和图4,配合物为三斜晶系,P-1空间群,晶胞参数为 α=80.548(7)°,β=70.866(10)°,γ=88.424(8)°,
表1制备的配合物的晶体结构数据
表2制备的配合物的主要键长和键角数据
对照例
一种喹啉铁(II)配合物,为喹啉-2-甲醛2-嘧啶腙Fe(II)配合物,分子式为[Fe(C14H11N5)2]·BF4 ·CH3OH·3H2O;其中,C14H11N5为配体喹啉-2-甲醛2-嘧啶腙,其分子结构式为:
其中,配体喹啉-2-甲醛2-嘧啶腙的制备方法,包括以下步骤:
(1)将20mmol 2-氯嘧啶溶于20mL无水乙醇后,加入8mL(过量)质量分数80%的水合肼溶液,室温下搅拌反应2h,得到中间体粗品;
(2)中间体粗品用无水乙醇重结晶,得到白色针状晶体2-肼基嘧啶中间体;
(3)将1mmol 2-肼基嘧啶中间体与1mmol喹啉-2-甲醛分别溶于10mL无水乙醇中,然后混合,78℃回流反应6h;
(4)回流反应结束后,旋蒸浓缩析出淡黄色粉末,冷却抽滤,无水乙醇洗涤,得到的产物即为配体喹啉-2-甲醛2-嘧啶腙。
所制备的配体喹啉-2-甲醛2-嘧啶腙,红外光谱(cm-1,KBr):3198,3044,1573,1541,1502,1446,1404,1324,1265,1251,1154,1122,1098,1074,982,921,872,849,793,776,753,666,641,482。
喹啉-2-甲醛2-嘧啶腙Fe(II)配合物的制备方法,包括以下步骤:
(1)准确称取0.1mmol配体喹啉-2-甲醛2-嘧啶腙,溶于16mL甲醇和二氯甲烷的混合溶剂(VCH3OH:VCH2Cl2=1:1)中,得到配体溶液;
(2)准确称取0.05mmol四氟硼酸亚铁,加入到配体溶液中,室温搅拌10min;
(3)过滤,滤液静置室温挥发,几天后析出黑色块状晶体,即为喹啉-2-甲醛2-嘧啶腙Fe(II)配合物。
对照例配合物的红外光谱(cm-1,KBr):3413,3057,2972,2888,2828,2022,1717,1599,1564,1522,1426,1412,1335,1268,1200,1123,1013,869,792,742,657,623,522,496,462。
本对照例的配合物的X射线单晶衍射结构的实验条件和结果如下:
单晶结构数据在带有石墨单色器的SuperNova Dual衍射仪上测定。选择合适大小(0.4×0.3×0.1mm3)的晶体固定在玻璃毛上收集晶体数据。采用CuKα射线和ω扫描方式,在3.873<θ<74.664°范围内收集到13893个衍射点,其中独立衍射点个数为6670(Rint=0.0273)。经验吸收校正采用SADABS程序。化合物的分子结构由直接法解出,用SHELXTL全矩阵最小二乘法精修。所有的非氢原子采用各向异性热参数精修,最后用理论加氢法确定氢原子的位置。
表3制备的配合物的晶体结构数据
实验例
本发明体外抗氧化实验的测定方法是:
1、试剂的配制
DPPH溶液的配制:4mg的1,1-二苯基-2-苦肼自由基(DPPH),溶于无水乙醇,定容至100mL棕色容量瓶,现配现用。
维生素E溶液的配制:取维生素E胶囊1粒(100mg/粒),剪破胶囊壳,用无水乙醇溶解,超声助溶,定容至100mL容量瓶中。
样品溶液的配制:称取样品(本发明配体、配合物)20mg,用二甲基亚砜(DMSO)溶解,定容至10mL容量瓶中,得浓度为2mg/mL的母液。然后用无水乙醇依次稀释为1mg/mL、0.8mg/mL、0.6mg/mL、0.4mg/mL、0.2mg/mL、0.1mg/mL、0.05mg/mL、0.025mg/mL浓度的样品溶液。根据抗氧化抑制率公式(如下)计算样品抑制率:
DPPH抑制率(%)=[1-(Ai-Aj)/Ac]×100%
其中,Ai为2mL DPPH溶液加入2mL各浓度待测样品溶液所测量出的吸光值;Aj为2mL无水乙醇加入2mL各浓度待测样品溶液所测量出的吸光值;Ac为2mL DPPH溶液加入2mLDMSO所测量出的吸光值。
对照例配合物和阳性对照物维生素E的测量参照样品的测量方法。
本发明配体、配合物、维生素E和对照例配合物的抗氧化活性见表4,对DPPH自由基的清除率随浓度变化的关系曲线见图6。
表4不同浓度的化合物对DPPH自由基的清除率(%)
体外抗氧化实验的结果显示:本发明的含多个配位点的NNO型喹啉Fe(II)配合物对DPPH自由基具有较强的清除作用,远远高于同浓度的维生素E和对照例的喹啉铁(II)配合物。并且形成Fe(II)配合物后,活性明显强于同浓度的配体喹啉-2-甲醛-苯甲酰腙。这表明,本发明制备的NNO型喹啉Fe(II)配合物具有优异的抗氧化性能,可有效用于制备抗衰老药物,有望进一步研究药理和生理活性。
Claims (7)
3.一种如权利要求1或2所述的NNO型喹啉Fe(II)配合物的制备方法,其特征在于,包括以下步骤:
(1)将配体喹啉-2-甲醛-苯甲酰腙,溶于甲醇中,并加入氢氧化钠,得到配体溶液;
(2)将高氯酸亚铁水合物,溶于甲醇中,得到Fe(II)盐溶液;
(3)将配体溶液和Fe(II)盐溶液过滤,然后混合并密封,室温下相互扩散反应,直至析出灰色薄片状晶体,即为NNO型喹啉Fe(II)配合物。
4.根据权利要求3所述的NNO型喹啉Fe(II)配合物的制备方法,其特征在于,配体喹啉-2-甲醛-苯甲酰腙、氢氧化钠和高氯酸亚铁水合物的摩尔比为2:2:1。
5.一种如权利要求1或2所述的NNO型喹啉Fe(II)配合物在制备清除DPPH自由基药物方面的应用。
6.一种如权利要求1或2所述的NNO型喹啉Fe(II)配合物在制备抗氧化药物方面的应用。
7.一种如权利要求1或2所述的NNO型喹啉Fe(II)配合物在制备抗衰老药物方面的应用。
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