Realization of nitroaromatic chromophores with intense two-photon brightness
作者:Bartłomiej Sadowski、Marzena Kaliszewska、Guillaume Clermont、Yevgen M. Poronik、Mireille Blanchard-Desce、Piotr Piątkowski、Daniel T. Gryko
DOI:10.1039/d3cc03347c
日期:——
dipyrrolonaphthyridinediones bearing two nitrophenyl substituents. Methyl groups simultaneously being weakly electron-donating and inducing steric hindrance appear to be a key structural parameter that allows for significant emission enhancement, whereas Et2N groups cause fluorescence quenching. The magnitude of two-photonabsorption increases if 4-nitrophenyl substituents are present while the contribution
强荧光是带有两个硝基苯基取代基的二吡咯萘啶二酮的一般特征。甲基同时具有弱给电子性和诱导空间位阻似乎是允许显着发射增强的关键结构参数,而Et 2 N基团导致荧光猝灭。如果存在 4-硝基苯基取代基,双光子吸收的幅度会增加,而 Et 2 N 基团的贡献是有害的。
Xanthine oxidase inhibitor
申请人:TEIJIN LIMITED
公开号:US10301300B2
公开(公告)日:2019-05-28
Provided are a xanthine oxidase inhibitor, a drug for improving vascular endothelial function, and an excellent therapeutic or prophylactic drug for diseases associated with xanthine oxidase such as gout, hyperuricaemia, and for diseases associated with vascular endothelial functional disorder containing a compound represented in a formula (I) or the pharmaceutically acceptable salt thereof as an active ingredient.