Assembly of 2-Arylbenzothiazoles through Three-Component Oxidative Annulation under Transition-Metal-Free Conditions
摘要:
Highly efficient methods for the synthesis of 2-arylbenzothiazoles and 2-arylnaphtho[2,1-d]thiazoles have been developed. Readily available aromatic amines, benzaldehydes, and elemental sulfur were directly assembled through oxidative annulation and C-H functionalization under transition-metal-free conditions, where DMSO or oxygen served as the oxidant. NH4I or KI as the catalyst was found to be effective to promote the transformations to give the annulation products in good to excellent yields with wide functional group tolerance.
[EN] PROTEOLYSIS TARGETING CHIMERIC (PROTAC) COMPOUND WITH E3 UBIQUITIN LIGASE BINDING ACTIVITY AND TARGETING ALPHA-SYNUCLEIN PROTEIN FOR TREATING NEURODEGENERATIVE DISEASES<br/>[FR] COMPOSÉ CHIMÈRE CIBLANT LA PROTÉOLYSE (PROTAC) AYANT UNE ACTIVITÉ DE LIAISON À L'UBIQUITINE LIGASE E3 ET CIBLANT UNE PROTÉINE ALPHA-SYNUCLÉINE POUR LE TRAITEMENT DE MALADIES NEURODÉGÉNÉRATIVES
申请人:ARVINAS OPERATIONS INC
公开号:WO2020041331A1
公开(公告)日:2020-02-27
The present disclosure relates to bifunctional compounds, which find utility as modulators of alpha-synuclein (target protein). In particular, the present disclosure is directed to bifunctional compounds, which contain on one end a Von Hippel-Lindau, cereblon, Inhibitors of Apotosis Proteins or mouse double-minute homolog 2 ligand which binds to the respective E3 ubiquitin ligase and on the other end a moiety which binds the target protein, such that the target protein is placed in proximity to the ubiquitin ligase to effect degradation (and inhibition) of target protein. The present disclosure exhibits a broad range of pharmacological activities associated with degradation/ inhibition of target protein. Diseases or disorders that result from aggregation or accumulation of the target protein are treated or prevented with compounds and compositions of the present disclosure. Such diseases or disorders are alpha-synucleinopathies or neurodegenerative diseases associated with alpha-synuclein accumulation and aggregation, such as e.g. Parkinson Disease, Alzheimer's Disease, dementia, dementia with Lewy bodies or multiple system atrophy, in particular Parkinson's Disease.
Copper-Catalyzed Oxidative Decarboxylative Arylation of Benzothiazoles with Phenylacetic Acids and α-Hydroxyphenylacetic Acids with O<sub>2</sub> as the Sole Oxidant
作者:Qiuling Song、Qiang Feng、Mingxin Zhou
DOI:10.1021/ol402871f
日期:2013.12.6
A Cu(II)-catalyzed oxidative decarboxylative synthesis of 2-aryl benzothiazole from phenylacetic acids and α-hydroxyphenylacetic acids has been developed. This reaction proceeds via Cu(II)-catalyzed decarboxylation, C–H bond oxidation, ring-opening, and condensation steps in a one-pot protocol with dioxygen as the sole terminal oxidant. Various functional groups were tolerated under standard conditions
Iron-catalyzed arylation of benzoazoles with aromatic aldehydes using oxygen as oxidant
作者:Saiwen Liu、Ru Chen、Xiangyu Guo、Huiqiong Yang、Guojun Deng、Chao-Jun Li
DOI:10.1039/c2gc35457h
日期:——
An iron-catalyzed arylation of azoles with aromatic aldehydes using oxygen as oxidant has been discovered. The reaction proceeded well for a range of different substrates under oxidative conditions.
KI-catalyzed arylation of benzothiazoles from the coupling of aryl aldehydes with benzothiazoles in neat water
作者:Yuyu Gao、Qiuling Song、Guolin Cheng、Xiuling Cui
DOI:10.1039/c3ob42318b
日期:——
A KI-catalyzed oxidative coupling of benzothiazoles with aryl aldehydes using TBHP as an oxidant in neat water under metal free conditions is described.
Ligand Combination Approach in Pd‐Catalyzed Direct C−H Arylation of Benzothiazole and Benzoxazole
作者:Sneha Prasad Bakare、Mahendra Patil
DOI:10.1002/ejoc.202301013
日期:2024.1.8
Two is better than one! A combination of two ligands (Phen.H2O and PPh3) with Pd catalyst offers a highly efficient catalytic system for the direct C−H arylation of benzothiazole and benzoxazole with aryl halides. Mechanistic studies including kinetic isotope effect experiments and computational investigations suggests that two ligands may work cooperatively to enhance the catalytic activity in the