transformation was highly regioselective and accomplished with a wide scope and functional group tolerance. Silver nitrate played a crucial role in this directsite-selective arylation. The method was extended to synthesize biologicallyactivemolecules.
Magnesiate-Utilized/Benzyne-Mediated Approach to Indenopyridones from 2-Pyridones: An Attempt To Synthesize the Indenopyridine Core of Haouamine
作者:Tomasz J. Idzik、Aleksandra Borzyszkowska-Ledwig、Łukasz Struk、Jacek G. Sośnicki
DOI:10.1021/acs.orglett.9b03806
日期:2019.12.6
agents, mediated by benzyne generated in situ, under optimized conditions, is described. Following the developed protocol, rare C4a-arylsubstituted indeno[2,1-b]pyridones, resembling the core of haouamine, were obtained. The protocol offering the one-pot synthesis directly from 2-pyridone is also described.
使用R 3 MgLi类型的菱镁酸酯作为亲核试剂,可高效,短时间地合成顺式稠合的茚并[ 2,1- b ]-和茚并[1,2 - c ]吡啶-2-酮,从2-吡啶酮开始描述了在优化条件下由原位生成的苯并介导的去质子化剂。按照已开发的方案,获得了罕见的C4a-芳基取代的茚并[2,1- b ]吡啶酮,类似于蒿胺的核心。还描述了直接从2-吡啶酮提供一锅合成的方案。
Ultra‐long Near‐infrared Repeatable Photochemical Afterglow Mediated by Reversible Storage of Singlet Oxygen for Information Encryption
general strategy to realize repeatable photochemical afterglow (RPA) based on the reversible storage of singlet oxygen. Ultra-long near-infrared afterglow was achieved via the singlet oxygen-sensitized fluorescence approach, and its intensity shows no significant reduction over 50 excitation cycles. The RPA system was further applied for attacker-misleading information encryption, presenting a repeatable
Design of 2‐Pyridone Fluorophores for Brighter Emissions at Longer Wavelengths
作者:Dong Sun Kim、Younghun Kim、Dongwhan Lee、Yan Lee
DOI:10.1002/chem.202303458
日期:2024.3.12
sentence: A rational design strategy for 2-pyridone-based fluorophores with bright emission at long wavelengths is proposed. An intramolecularcharge transfer-based 2-pyridone fluorophore with large molar absorptivity (ϵ=20,100 M−1 cm−1), longer emission wavelength (λem=539 nm), high emission quantumyield (ϕF=74 %), and largeStokesshift (Δv=5720 cm−1) is developed by the strategy.
TOC 句子:提出了一种在长波长下具有明亮发射的基于 2-吡啶酮的荧光团的合理设计策略。基于分子内电荷转移的2-吡啶酮荧光团,具有大摩尔吸收率(ϵ=20,100 M −1 cm −1 )、更长的发射波长(λ em =539 nm)、高发射量子产率(Φ F =74 %),以及该策略产生了大的斯托克斯位移(Δv=5720 cm -1 )。
Platelet ADP receptor inhibitors
申请人:Portola Pharmaceuticals, Inc.
公开号:EP2314593A1
公开(公告)日:2011-04-27
Novel compounds of formulae (I), which more particularly include sulfonylurea derivatives, sulfonylthiourea derivatives, sulfonylguanidine derivatives, sulfonylcyanoguanidine derivatives, thioacylsulfonamide derivatives, and acylsulfonamide derivatives which are effective platelet ADP receptor inhibitors. These derivatives may be used in various pharmaceutical compositions, and are particularly effective for the prevention and/or treatment of cardiovascular diseases, particularly those diseases related to thrombosis. The invention also relates to the use of an effective amount of a compound of formulae (I), or a pharmaceutically acceptable salt thereof, in the manufacture of a pharmaceutical composition for preventing or treating thrombosis in a mammal.