设计和合成用于化学生物学的可见光响应的偶氮苯砌块。

Design and Synthesis of Visible-Light-Responsive Azobenzene Building Blocks for Chemical Biology.

机构信息

Stratingh Institute for Chemistry, University of Groningen, 9747 AG Groningen, The Netherlands.

Departamento de Química, Universidad de la Rioja, Centro de investigación en Síntesis Química, Madre de Dios 53, 26006 Logroño, Spain.

出版信息

J Org Chem. 2022 Nov 4;87(21):14319-14333. doi: 10.1021/acs.joc.2c01777. Epub 2022 Oct 26.

Abstract

Tetra--fluoro-azobenzenes are a class of photoswitches useful for the construction of visible-light-controlled molecular systems. They can be used to achieve spatio-temporal control over the properties of a chosen bioactive molecule. However, the introduction of different substituents to the tetra-fluoro-azobenzene core can significantly affect the photochemical properties of the switch and compromise biocompatibility. Herein, we explored the effect of useful substituents, such as functionalization points, attachment handles, and water-solubilizing groups, on the photochemical properties of this photochromic system. In general, all the tested fluorinated azobenzenes exhibited favorable photochemical properties, such as high photostationary state distribution and long half-lives, both in organic solvents and in water. One of the azobenzene building blocks was functionalized with a trehalose group to enable the uptake of the photoswitch into mycobacteria. Following metabolic uptake and incorporation of the trehalose-based azobenzene in the mycobacterial cell wall, we demonstrated photoswitching of the azobenzene in the isolated total lipid extract.

摘要

四氟代偶氮苯是一类光开关,可用于构建可见光控制的分子体系。它们可用于实现对选定生物活性分子性质的时空控制。然而,向四氟代偶氮苯核心引入不同的取代基会显著影响开关的光化学性质,并损害其生物相容性。在此,我们探索了有用取代基(如功能化点、连接臂和水溶性基团)对该光致变色体系光化学性质的影响。通常,所有测试的氟化偶氮苯都表现出良好的光化学性质,例如在有机溶剂和水中都具有高光稳定态分布和长半衰期。其中一个偶氮苯砌块用海藻糖基团进行了功能化,以实现光开关进入分枝杆菌。在代谢摄取并将基于海藻糖的偶氮苯掺入分枝杆菌细胞壁后,我们在分离的总脂提取物中证明了偶氮苯的光致开关。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e9e8/9639001/34ed537b13f0/jo2c01777_0002.jpg

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