(EN) The present invention provides compounds of formula (I) in which R is as defined in the specification, or a pharmaceutically acceptable metabolically labile ester or amide thereof, or a pharmaceutically acceptable salt thereof, which are useful as antagonists of one or more of the actions of L-glutamate at metabotropic excitatory amino acid receptors.(FR) Cette invention concerne des composés de formule (I), dans laquelle R est tel que défini dans le descriptif, ou un ester ou amide pharmaceutiquement acceptable de ces composés qui est métaboliquement labile, ou encore un sel pharmaceutiquement acceptable de ces composés, qu'on utilise comme antagonistes d'une ou de plusieurs actions du L-glutamate au niveau des récepteurs d'acides aminés excitateurs métabotropiques.
Nickel‐Hydride‐Catalyzed Diastereo‐ and Enantioselective Hydroalkylation of Cyclopropenes
作者:Qingqin Huang、Ya Chen、Xueting Zhou、Lei Dai、Yixin Lu
DOI:10.1002/anie.202210560
日期:2022.11.14
The first nickel-hydride-catalyzed diastereo- and enantioselective hydroalkylation of cyclopropenes has been developed for rapid synthesis of chiral alkylcyclopropane motifs. The reaction is efficient and versatile, taking place under mild conditions, and having excellent functional group tolerance. Concise asymmetric synthesis of antidepressant drug, D-Milnacipran, was performed to demonstrate the
C(sp<sup>3</sup>)–C(sp<sup>3</sup>) Coupling of Cycloalkanes and Alkyl Halides via Dual Photocatalytic Hydrogen Atom Transfer and Nickel Catalysis
作者:Ramadevi Pilli、Keerthika Selvam、Bala S. S. Balamurugan、Vidya Jose、Ramesh Rasappan
DOI:10.1021/acs.orglett.4c00567
日期:2024.4.19
Functionalization of C(sp3)–H bonds represents the most straightforward and atom-economical transformation in organic synthesis. An innovative approach integrating photocatalytic hydrogen atom transfer (HAT) and transition metal catalysis has made significant progress in the coupling of α-heterosubstituted C–H bonds with alkyl halides. However, unactivated alkanes were ineffective as a result of the
C(sp 3 )–H 键的官能化代表了有机合成中最直接且最经济的转化。结合光催化氢原子转移(HAT)和过渡金属催化的创新方法在α-杂取代C-H键与卤代烷的偶联方面取得了重大进展。然而,由于大量副产物的形成,未活化的烷烃是无效的。在此,我们证明了环烷烃和苄基溴/伯烷基碘偶联中的直接 HAT 和镍催化作用。此外,十钨酸四丁基铵(TBADT)也被回收和再利用。