Scope and Mechanism of a True Organocatalytic Beckmann Rearrangement with a Boronic Acid/Perfluoropinacol System under Ambient Conditions
作者:Xiaobin Mo、Timothy D. R. Morgan、Hwee Ting Ang、Dennis G. Hall
DOI:10.1021/jacs.8b01618
日期:2018.4.18
enylboronic acid were identified as efficient catalysts for the direct and chemoselective activation of oxime N-OH bonds in the Beckmann rearrangement. This classical organic reaction provides a unique approach to prepare functionalized amide products that may be difficult to access using traditional amide coupling between carboxylic acids and amines. Using only 5 mol % of boronic acid catalyst and
The present invention relates to radiolabelled olaparib and in particular [ 18 F]olaparib, a process for producing radiolabelled olaparib, and uses of radiolabelled olaparib in medical imaging.
2′ Biaryl amides as novel and subtype selective M1 agonists. Part I: Identification, synthesis, and initial SAR
作者:Brian Budzik、Vincenzo Garzya、Dongchuan Shi、James J. Foley、Ralph A. Rivero、Christopher J. Langmead、Jeannette Watson、Zining Wu、Ian T. Forbes、Jian Jin
DOI:10.1016/j.bmcl.2010.04.128
日期:2010.6
Biaryl amides were discovered as novel and subtype selective M1 muscarinic acetylcholine receptor agonists. The identification, synthesis, and initial structure–activity relationships that led to compounds 3j and 4c, possessing good M1 agonist potency and intrinsic activity, and subtype selectivity for M1 over M2–5, are described.
natural products and biologically active compounds. We herein report a visible-light-induced aerobicoxidativehydroxylation of arylboronicacids/pinacol esters using air as oxidant and without using any catalysts and base, etc., additives, providing a green entry to a variety of phenols in a highlyefficient and concise fashion. This novel reaction is enabled by photoactivation of an electron donor–acceptor
Exploration of Directing-Group-Assisted, Copper-Mediated Radiofluorination and Radiosynthesis of [<sup>18</sup>F]Olaparib
作者:Dong Zhou、Wenhua Chu、Huaping Chen、Jinbin Xu
DOI:10.1021/acsmedchemlett.3c00465
日期:2024.1.11
Copper-mediated radiofluorination (CMRF) of organoboronic precursors is the method of choice for late-stage radiofluorination of aromatic compounds as positron emission tomography (PET) radiotracers. However, CMRF generally requires harsh reaction conditions, a large amount of substrates, and harsh solvents (e.g., DMA) to proceed, affording variable radiochemical yields (RCYs). Using [18F]tosyl fluoride