5533-00-6Relevant articles and documents
Synthesis and Photoswitching Properties of Bioinspired Dissymmetric I-Pyrone, an Analogue of Cyclocurcumin
Pecourneau, Jérémy,Losantos, Raúl,Monari, Antonio,Parant, Stéphane,Pasc, Andreea,Mourer, Maxime
, p. 8112 - 8126 (2021/06/30)
Cyclocurcumin (CC), a turmeric curcuminoid with potential therapeutic properties, is also a natural photoswitch that may undergo E/Z photoisomerization under UV light. To be further exploited in relevant biological applications, photoactivation under near-infrared (NIR) irradiation is required. Such requirement can be met through opportune chemical modifications, by favoring two-photon absorption (TPA) probability. Herein, a general and efficient synthesis of a biomimetic 2,6-disubstituted-δ-pyrone analogue of CC is described, motivated by the fact that molecular modeling previews an order of magnitude increase of its NIR TPA compared to CC. Three retrosynthetic pathways have been identified (i) via an aryl-oxazole intermediate or via aryl-diynone through (ii) a bottom-up or (iii) a top-down approach. While avoiding the passage through unstable synthons or low-yield intermediate reactions, only the latest approach could conveniently afford the 2,6-disubstituted-I-pyrone analogue of CC, in ten steps and with an overall yield of 18%. The photophysical properties of our biomimetic analogue have also been characterized showing an improved photoisomerization yield over the parent natural compound. The potentially improved nonlinear optical properties, as well as enhanced stability, may be correlated to the enforcement of the planarity of the pyrone moiety leading to a quadrupolar D-π-A-π-D system.
STYRYLBENZOTHIAZOLE DERIVATIVES AND USES IN IMAGING
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Page/Page column 5; 39, (2019/12/04)
This disclosure relates to styrylbenzothiazole derivatives for use as in vivo imaging agents for the diagnosis of Parkinson's disease (PD) or other degenerative disorders or conditions of the central nervous system. Early diagnosis is particularly advantageous as neuroprotective treatment can be applied to healthy neural cells to delay or even prevent the onset of debilitating clinical symptoms.
Drug compound for treating hepatopathy and application thereof
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Paragraph 0244-0246, (2019/10/15)
The invention discloses a drug compound for treating hepatopathy and application thereof. The drug compound specifically serves as a compound shown in general formula (I) or an optical isomer or a pharmaceutically-acceptable salt of the compound. The compound or the optical isomer or the pharmaceutically-acceptable salt of the compound has a good curative effect and low toxicity on hepatopathy, especially fatty liver. Experiments show that the compound has an obvious protective effect on zebrafish nonalcoholic fatty liver, so that the drug compound has a good application prospect in medicinesfor treatment or prevention of hepatopathy, especially fatty liver or liver fibrosis or liver cirrhosis.