Synthesis of Enantiopure Unnatural Amino Acids by Metallaphotoredox Catalysis
作者:Tomer M. Faraggi、Caroline Rouget-Virbel、Juan A. Rincón、Mario Barberis、Carlos Mateos、Susana García-Cerrada、Javier Agejas、Oscar de Frutos、David W. C. MacMillan
DOI:10.1021/acs.oprd.1c00208
日期:2021.8.20
wide array of optically pure unnatural amino acids. This method utilizes a photocatalytic cross-electrophile coupling between a bromoalkyl intermediate and a diverse set of aryl halides to produce artificial analogues of phenylalanine, tryptophan, and histidine. The reaction is tolerant of a broad range of functionalities and can be leveraged toward the scalable synthesis of valuable pharmaceutical scaffolds
A nickel-catalyzed, enantioselective, three-component fluoroalkylarylation of unactivated alkenes with aryl halides and perfluoroalkyl iodides has been described. This cross-electrophile coupling protocol utilizes a chiral nickel/BiOx system as well as a pendant chelating group to facilitate the challenging three-component, asymmetric difunctionalization of unactivated alkenes, providing direct access
The Acid-Free Cyclopropanol-Minisci Reaction Reveals the Catalytic Role of Silver–Pyridine Complexes
作者:Andrei Nikolaev、Claude Y. Legault、Minhao Zhang、Arturo Orellana
DOI:10.1021/acs.orglett.7b03938
日期:2018.2.2
direct C–H functionalization of a wide range of aromatic nitrogen heterocycles with cyclopropanols under acid-free conditions. This reaction can be conducted on gram-scale and with low catalyst loadings (as low as 1%), which is rare for silver-catalyzed Minisci-type reactions. Moreover, reactivity trends, as well as steric and calculated electronic properties of the heterocycles, strongly suggest that
bond at either the meta or para position by only changing the catalyst system poses a significant challenge. We herein report the [Fe(TPP)Cl]-enabled, selective, C-H difluoromethylation of arenes using BrCF2CO2Et as the difluoromethylation source, which successfully altered the selectivity from the meta to the para position. A preliminary mechanistic study revealed the iron porphyrin complex not only
[EN] METHYLAMINE DERIVATIVES AS LYSYSL OXIDASE INHIBITORS FOR THE TREATMENT OF CANCER<br/>[FR] DÉRIVÉS DE LA MÉTHYLAMINE COMME INHIBITEURS DE LA LYSYL OXIDASE POUR LE TRAITEMENT DU CANCER
申请人:THE INST OF CANCER RESEARCH: ROYAL CANCER HOSPITAL
公开号:WO2017141049A1
公开(公告)日:2017-08-24
Provided are compounds of the Formula (I), or a pharmaceutically acceptable salt thereof, wherein W, X, Y, Z, x, R1, R2, R3, x and n are defined in the specification. The compounds are inhibitors of lysyl oxidase (LOX) and lysyl oxidase-like (LOXL) family members (LOXL1, LOXL2, LOXL3, LOXL4) and are useful in therapy, particularly in the treatment of cancer. Also disclosed are LOX inhibitors for use in the treatment of a cancer associated with EGFR and biomarkers that predict responsiveness to a LOX inhibitor.