Two new coumarinderivatives, 7-(diethylamino)-3-(pyridin-2-yl)coumarin (DAPC) and 3-(pyridin-2-yl)-benzo[5,6]coumarin (PBC), were synthesized and characterized by elemental analysis, 1H NMR, FT-IR and UV–vis absorption spectra. Their structures were determined by X-ray crystallography single crystal analysis. The fluorescence behaviors of the compounds in dichloromethane solutions were observed. The
合成并表征了两种新的香豆素衍生物7-(二乙氨基)-3-(吡啶-2-基)香豆素(DAPC)和3-(吡啶-2-基)-苯并[5,6]香豆素(PBC)通过元素分析,1 H NMR,FT-IR和UV-vis吸收光谱。通过X射线晶体学单晶分析确定它们的结构。观察到化合物在二氯甲烷溶液中的荧光行为。结果表明,化合物DAPC具有较高的荧光量子产率(0.84),并且在紫外光激发下具有较强的蓝色发射。化合物的HOMO和LUMO的能级已通过密度泛函理论(DFT)和随时间变化的密度泛函理论(TD-DFT)在B3LYP / 6-31G(d)水平进行了计算。
E3 UBIQUITIN LIGASE AGONISTS, PHARMACEUTICAL COMPOSITIONS INCLUDING THE E3 UBIQUITIN LIGASE AGONISTS, RELATED METHODS OF USE
申请人:FRED HUTCHINSON CANCER RESEARCH CENTER
公开号:US20210047278A1
公开(公告)日:2021-02-18
E3 ubiquitin ligase agonists, pharmaceutical compositions including the E3 ubiquitin ligase agonists, and related methods of use are described.
Coumarin C−H Functionalization by Mn(I) Carbonyls: Mechanistic Insight by Ultra‐Fast IR Spectroscopic Analysis
作者:Thomas J. Burden、Kathryn P. R. Fernandez、Mary Kagoro、Jonathan B. Eastwood、Theo F. N. Tanner、Adrian C. Whitwood、Ian P. Clark、Michael Towrie、Jean‐Philippe Krieger、Jason M. Lynam、Ian J. S. Fairlamb
DOI:10.1002/chem.202203038
日期:——
methodology for the synthesis of hybrid coumarin-pyridinium compounds using Mn(I) carbonyl chemistry. The system was found suitable for forensic examination of the key steps underpinning CO loss, alkyne coordination and insertion, and subsequent reductive elimination, which were quantifiable by time-resolved spectroscopic methods.
面向 π 延伸的杂化香豆素-吡啶鎓化合物:我们开发了一种使用 Mn(I) 羰基化学合成杂化香豆素-吡啶鎓化合物的卓越方法。该系统适合对 CO 损失、炔烃配位和插入以及随后的还原消除的关键步骤进行法医检查,这些步骤可以通过时间分辨光谱方法进行量化。