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首页> 外文期刊>Journal of Molecular Liquids >A flavonol that acts as a potential DNA minor groove binder as also an efficient G-quadruplex loop binder
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A flavonol that acts as a potential DNA minor groove binder as also an efficient G-quadruplex loop binder

机译:一种用作潜在的DNA小沟槽粘合剂的黄酮醇,也是一种有效的G-Quadreple Loop粘合剂

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摘要

A fisetin derivative, belonging to the flavonol family, has been synthesized. Fisetin is obtained from natural resources and is a very important small molecule in treating neurological disorders. The synthesized compound, 2-(3,4-diethoxyphenyl)-3-hydroxy-4H-benzo[h]chromen-4-one (abbreviated as DEPHBC) has been found to bind to the minor groove of ctDNA in contrast to fisetin, which is a DNA intercalator. However, DEPHBC can further stabilize the DNA helix. Like fisetin, DEPHBC also serves as a loop binder to G-quadruplex, but the binding is much stronger compared to many loop binders. This provides appreciable stability to G-quadruplex DNA. DEPHBC can undergo excited state intramolecular proton transfer (ESIPT) and hence exists in its normal and tautomeric (proton transferred) forms in the excited state. DNA minor groove and G-quadruplex loop binding facilitates the tautomer emission over the normal form and hence can act as a reporter for the binding processes. (C) 2018 Elsevier B.V. All rights reserved.
机译:已经合成了属于黄酮醇家族的Fisetin衍生物。 Fisetin是从自然资源获得的,并且是一种治疗神经系统疾病的一个非常重要的小分子。已发现合成的化合物,2-(3,4-二乙氧基苯基)-3-羟基-4H-苯并[H] Chromen-4-α-(缩写为Dephbc)与Fisetin相比,CTDNA的次要凹槽结合,这是DNA嵌入器。然而,Dephbc可以进一步稳定DNA螺旋。与fisetin一样,Dephbc也用作G-quadreplex的环形粘合剂,但与许多环粘合剂相比,结合更强。这为G-QuadrepleDNA DNA提供了可观的稳定性。 Dephbc可以经过激发态分子内质子转移(Esipt),因此存在于激发态中的正常和互变异构体(质子转移)的形式。 DNA小凹槽和G-QuadrupleL环形结合有助于正常形式的互变异构体发射,因此可以充当结合过程的报告。 (c)2018年elestvier b.v.保留所有权利。

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