A Redox Strategy for Light-Driven, Out-of-Equilibrium Isomerizations and Application to Catalytic C–C Bond Cleavage Reactions
作者:Eisuke Ota、Huaiju Wang、Nils Lennart Frye、Robert R. Knowles
DOI:10.1021/jacs.8b12552
日期:2019.1.30
We report a general protocol for the light-driven isomerization of cyclic aliphatic alcohols to linear carbonyl compounds. These reactions proceed via proton-coupled electron-transfer activation of alcohol O-H bonds followed by subsequent C-C β-scission of the resulting alkoxy radical intermediates. In many cases, these redox-neutral isomerizations proceed in opposition to a significant energetic gradient
我们报告了光驱动的环状脂肪醇异构化为线性羰基化合物的通用协议。这些反应通过醇 OH 键的质子耦合电子转移活化进行,随后生成的烷氧基自由基中间体的 CC β 断裂。在许多情况下,这些氧化还原中性异构化与显着的能量梯度相反,产生的产品热力学稳定性低于起始材料。提出了一种机制来合理化这种不平衡行为,该机制可以作为设计由激发态氧化还原事件驱动的其他逆热力学转换的模型。
AZEPANE DERIVATIVES AND METHODS OF TREATING HEPATITIS B INFECTIONS
申请人:Novira Therapeutics, Inc.
公开号:US20150197493A1
公开(公告)日:2015-07-16
Provided herein are compounds useful for the treatment of HBV infection in a subject in need thereof, pharmaceutical compositions thereof, and methods of inhibiting, suppressing, or preventing HBV infection in the subject.
Light-mediated transformations of olefins into alcohols: reactions of hydroxyl radicals with cycloalkenes
作者:H.R. Sonawane、B.S. Nanjundiah、R.G. Kelkar
DOI:10.1016/s0040-4020(01)82107-4
日期:1986.1
Reactions of hydroxyl radicals, generated by photodecomposition of hydrogen peroxide in acetonitrile, with a wide variety of cycloalkenes have been examined. The results show that the major reaction is the addition of hydroxyl radicals to the less substituted end of the double bond, furnishing the secondary alcohols. The reactivity pattern and the observed regio- and stereoselectivity clearly reveal
4-Azaindole derivatives which are modulators of muscarinic acetylcholine receptor (mAChR) M1 and which may be effective for the prevention or disease modifying or symptomatic treatment of cognitive deficits associated with neurological disorders such as Alzheimer-type dementia (AD) or dementia with Lewy bodies (DLB), and a pharmaceutical composition comprising a 4-azaindole derivative as an active ingredient.
Due to the great value of amino alcohols, new methods for their synthesis are in high demand. Abundant aliphatic alcohols represent the ideal feedstock for the method development toward this important motif. To date, transition-metal-catalyzed approaches for the directed remote amination of alcohols have been well established. Yet, they have certain disadvantages such as the use of expensive catalysts