Synthesis of Amido-N-imidazolium Salts and their Applications as Ligands in Suzuki-Miyaura Reactions: Coupling of Hetero- aromatic Halides and the Synthesis of Milrinone and Irbesartan
作者:Manian Rajesh Kumar、Kyungho Park、Sunwoo Lee
DOI:10.1002/adsc.201000592
日期:2010.12.17
catalytic system based on palladium-amido-N-heterocyclic carbenes for Suzuki–Miyauracouplingreactions of heteroaryl bromides is described. A variety of sterically bulky, amido-N-imidazoliumsalts were synthesized in high yields from the corresponding anilines. This catalytic system effectively promoted Suzuki–Miyauracouplings of heteroaryl bromides and chlorides with a range of boronic acids to
The Suzuki–Miyaura reaction of various aryl halides with aryl boronic acids using [Ph2PCH2PPh2CH=C(O)(C10H7)]PdCl2} as a catalyst has been investigated. The X-ray crystal structure of the catalyst reveals a five-membered chelate ring formed by coordination of the ligand through the phosphine group and the ylidic carbon atom to the metal center. This palladacycle exhibited excellent activities and reusability in the aqueous phase for the Suzuki cross-coupling reactions of arylboronic acids with aryl halides. The proposed protocol featured mild reaction conditions and notable simplicity and efficiency using Cs2CO3 as a base in water. The catalytic system could be reused four times without significant loss of activity.
Pyrazolopyrimidine derivatives or pharmaceutically acceptable salts thereof
申请人:Unoki Gen
公开号:US20070173519A1
公开(公告)日:2007-07-26
A pyrazolopyrimidine derivative represented by formula (1) and pharmaceutically acceptable salt thereof exhibit excellent inhibitory activity against MAPKAP-K2. Accordingly, medicines containing this compound as an active ingredient are expected to be effective for treating diseases mediated by MAPKAP-K2 such as, for example, inflammatory disorder, autoimmune diseases, destructive osteopathy, cancer and/or tumor growth.
[EN] SMALL MOLECULE INDUCERS OF REACTIVE OXYGEN SPECIES AND INHIBITORS OF MITOCHONDRIAL ACTIVITY<br/>[FR] INDUCTEURS DE PETITES MOLÉCULES DE DÉRIVES RÉACTIFS DE L'OXYGÈNE ET INHIBITEURS DE L'ACTIVITÉ MITOCHONDRIALE
申请人:UNIV MICHIGAN REGENTS
公开号:WO2017155991A1
公开(公告)日:2017-09-14
This invention is in the field of medicinal chemistry. In particular, the invention relates to a new class of small-molecules having a quinazolinedione structure which function as reactive oxygen species (ROS) inducers and inhibitors of mitochondrial activity within cancer cells (e.g., pancreatic cancer cells), and their use as therapeutics for the treatment of cancer (e.g., pancreatic cancer) and other diseases.