CN108084134A - 香豆素甲腙的合成及其作为甲醛荧光探针的应用 - Google Patents

香豆素甲腙的合成及其作为甲醛荧光探针的应用 Download PDF

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CN108084134A
CN108084134A CN201810093171.1A CN201810093171A CN108084134A CN 108084134 A CN108084134 A CN 108084134A CN 201810093171 A CN201810093171 A CN 201810093171A CN 108084134 A CN108084134 A CN 108084134A
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formaldehyde
probe
fluorescence probe
cumarin
ethyl alcohol
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李和平
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Changsha University of Science and Technology
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D311/00Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
    • C07D311/02Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D311/04Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
    • C07D311/06Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 2
    • C07D311/08Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 2 not hydrogenated in the hetero ring
    • C07D311/16Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 2 not hydrogenated in the hetero ring substituted in position 7
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    • C09K11/00Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/06Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64Fluorescence; Phosphorescence
    • G01N21/6428Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
    • G01N21/643Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes" non-biological material
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    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2211/00Chemical nature of organic luminescent or tenebrescent compounds
    • C09K2211/10Non-macromolecular compounds
    • C09K2211/1018Heterocyclic compounds
    • C09K2211/1025Heterocyclic compounds characterised by ligands
    • C09K2211/1088Heterocyclic compounds characterised by ligands containing oxygen as the only heteroatom

Abstract

本发明公开了一种检测甲醛的荧光探针香豆素甲腙(FA‑PB)的制备与应用,属于分析化学技术领域,FA‑PB的分子式为C11H10N2O3,其结构式如下所示:

Description

香豆素甲腙的合成及其作为甲醛荧光探针的应用
技术领域
本发明涉及香豆素甲腙的合成及其作为一种检测甲醛的荧光探针的应用,属于分析化学技术领域。
背景技术
甲醛(HCHO,FA)是一种重要的化工原料,广泛应用于化妆品、橡胶、树脂、塑料、染料等制造业,也常用于食品防腐、药物合成和标本杀菌,FA具有刺激性臭味,能强烈刺激消化道和呼吸道,毒性较大,长期暴露于甲醛环境中会导致记忆力衰退和各种神经性疾病,轻则引起咳嗽、头疼,哮喘,眼睛发痒,重则将引发鼻咽癌、肺癌、消化道癌、骨髓性白血病等疾病。
生物体内的内源性FA可能在DNA的甲基化过程中产生,在组蛋白去甲基化过程中也可能产生,此外,甲胺和多胺与对氨基脲敏感的胺氧化酶(SSAO)的降解反应过程也可能产生内源性FA,静脉核酸内切酶中的 FA存在于许多生物组织和细胞中,浓度从低到高在微摩尔范围,然而,到目前为止,FA的生物学、医学作用仍然尚未明确,这可能是因为缺乏在生物系统背景下检测FA的强大的分子工具。
荧光探针检测法作为新型的分析方法,具有方法简单,费用低廉,效率高,能用于细胞成像等优点,近年来在检测小分子和金属离子方面得到了快速发展,但目前已有的反应型甲醛荧光探针,具有本身毒性大、合成步骤冗长、分子结构复杂、响应慢、合成所用试剂昂贵以及不易制备等缺点,限制了其大规模的生产和应用。
一个优秀的荧光探针要尽可能无毒或低毒性,来源于伞形科、芸香科、菊科等天然植物中以及微生物的代谢产物中的香豆素,不仅无毒,还具有抵抗艾滋病、抗肿瘤、增强免疫等生理活性,而且具有荧光量子产率高,Stokes位移大,光物理和光化学性质可调以及光稳定性好等优点,是荧光探针的优秀候选荧光团。
本专利通过分子设计合成了以香豆素为母体的可检测甲醛的荧光探针香豆素甲腙(FA-PB),随着甲醛浓度的增加,探针的荧光强度显著增强,具有高度的灵敏性。
发明内容
针对目前检测甲醛的荧光探针所面临的问题的现状,本发明通过分子设计,合成出一种检测甲醛的荧光探针香豆素甲腙(FA-PB),本发明还提供了该探针的制备方法和应用。
本发明采用以下技术方案:
香豆素甲腙(FA-PB)作为一种检测甲醛的荧光探针,该探针分子的分子式为:C11H10N2O3, 其结构式如下所示。
上述的甲醛荧光探针的制备步骤为:将4-甲基-7-羟基-8-甲酰基香豆素(HFC)溶于乙醇后加入圆底烧瓶中,再加入水合肼,微波加热,反应10-50 min后旋转蒸发浓缩,过滤,水洗2次,固体以乙醇重结晶,抽滤,真空干燥,得目标探针化合物 FA-PB。
上述步骤的特征在于:化合物HFC与肼的物质的量的比为2:1—1:4,反应介质乙醇在反应物中的质量百分比优选为30—80%,加热方式为微波加热,加热温度为20-70℃,反应时间为10-50 min,提纯方式为重结晶,重结晶溶剂为乙醇。
上述的甲醛荧光探针的合成路线如下。
本发明所述的FA-PB可作为荧光探针,应用于甲醛荧光检测。
本发明的优点在于,1)探针的合成采用微波加热,合成时间只需10-50 min;2)本发明实现了对甲醛进行高灵敏性检测。
附图说明
图1为实施例2中5µM FA-PB加入0-100µM甲醛溶液后荧光发射光谱变化(激发波长= 302 nm,pH 7.4, 25oC)。
具体实施方式
下面结合实施例和附图对本发明做进一步说明,但本发明不受下述实施例的限制,实施例中化合物的号码对应于上述方案中化合物的号码。
实施例1。
香豆素甲腙(FA-PB)的合成。
将4.38 mmol的化合物HFC溶于20mL的乙醇,加入50mL的圆底烧瓶中,再加入5mL的水合肼,于微波70℃下反应40 min,旋转蒸发浓缩,过滤,水洗2次,固体以乙醇重结晶,抽滤,真空干燥,得探针化合物FA-PB,产率为83.97%,1HNMR(300MHz,DMSO-d6),δ2.40(s,3H,C4-CH3),6.21(s,1H,C3-H), 6.86-6.88(d,1H,C6-H,J=8.9Hz),7.36(s,2H,-NH2),7.56(d,1H,C5-H, J=8.9Hz), 8.42(s,1H,-CH=N-),12.79(s,1H,OH), MS(m/z),218.1(M+)。
实施例2。
FA-PB随不同甲醛(FA)加入量荧光谱图的变化。
取FA-PB溶于DMSO,配成浓度为1mM探针母液,将质量分数为37%的FA溶液加入去离子水,配制成甲醛浓度为1mM的甲醛母液,在荧光池中加入160 µL PBS缓冲液(pH=7.4),40µL乙醇,6µL探针母液,0-200µL的甲醛溶液,25oC下用荧光光谱仪测量其荧光发射光谱(激发波长=302nm),荧光发射光谱变化情况如图1所示,由图1可见,随着FA浓度的升高,探针溶液的荧光强度不断增大。

Claims (4)

1.一种检测甲醛的荧光探针(FA-PB),其特征在于:该探针的分子式为C11H10N2O3, 其结构式如下所示。
2.一种权利要求1所述的FA-PB的制备方法,其特征在于,它包括以下步骤:将化合物4-甲基-7-羟基-8-甲酰基香豆素(HFC)溶于乙醇,加入圆底烧瓶中,再加入水合肼,微波加热,反应10-50 min,旋转蒸发浓缩,过滤,水洗2次,固体以乙醇重结晶,抽滤,真空干燥得探针化合物FA-PB。
3.根据权利要求2所述的制备方法,其特征在于,所述步骤中化合物HFC与肼的物质的量的比为2:1—1:4,反应介质乙醇在反应物中的质量百分比优选为30—80%,加热方式为微波加热,加热温度为20-70℃,反应时间为10-50 min。
4.一种权利要求1所述的甲醛荧光探针FA-PB的应用,其特征在于,该荧光探针可以应用于环境中甲醛浓度变化的荧光检测。
CN201810093171.1A 2018-01-31 2018-01-31 香豆素甲腙的合成及其作为甲醛荧光探针的应用 Pending CN108084134A (zh)

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CN109574971A (zh) * 2019-01-03 2019-04-05 济南大学 一种双光子甲醛荧光探针及其制备方法和应用

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN109535147A (zh) * 2018-12-21 2019-03-29 大连理工大学 一种快速响应的甲醛荧光探针及其制备方法和应用
CN109535147B (zh) * 2018-12-21 2021-07-20 大连理工大学 一种快速响应的甲醛荧光探针及其制备方法和应用
CN109574971A (zh) * 2019-01-03 2019-04-05 济南大学 一种双光子甲醛荧光探针及其制备方法和应用

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