[EN] ALPHA-(TRIFLUOROMETHYL-SUBSTITUTED ARYLOXY, ARYLAMINO, ARYLTHIO OR ARYLMETHYL)-TRIFLUOROMETHYL-SUBSTITUTED PHENYLACETIC ACIDS AND DERIVATIVES AS ANTIDIABETIC AGENTS [FR] UTILISATION D'ACIDES PHENYLACETIQUES SUBSTITUES PAR ALPHA-(ARYLOXY, ARYLAMINO, ARYLTHIO OU ARYLMETHYLE SUBSTITUE PAR TRIFLUOROMETHYLE)-TRIFLUOROMETHYLE ET DE LEURS DERIVES EN TANT QU'AGENTS ANTIDIABETIQUES
New strategies in the synthesis of regioselectively trifluoromethyl- and trifluoromethoxy-substituted arenes as building blocks for biologically active molecules
摘要:
Regioisomerically pure trifluoromethyl- and trifluoromethoxy-substituted aromatic and heteroaromatic aldehydes and carboxylic acids are valuable building blocks for the synthesis of biologically active molecules. They have been prepared by employing modem organometallic methods. On this basis, a novel access to 2,3-dihydro-5-(trifluoromethoxy)indole was developed which represents an intriguing example of how organometallic and radical chemistry can fecundate each other. (C) 2002 Elsevier Science B.V. All rights reserved.
Stereoselective Synthesis of 1,1′‐Disaccharides by Organoboron Catalysis
作者:Sanae Izumi、Yusuke Kobayashi、Yoshiji Takemoto
DOI:10.1002/anie.202004476
日期:2020.8.10
2‐dihydroxyglycosyl acceptors and glycosyl donors in the presence of a tricyclic borinic acid catalyst. In this reaction, the complexation of the diols and the catalyst is crucial for the activation of glycosyl donors, as well as for the 1,2‐cis‐configuration of the products. The anomeric stereochemistry of the glycosyl donor depends on the employed glycosyl donor. Applications of the produced 1,1′‐disaccharides are
ANTI-VIRAL COMPOUNDS, COMPOSITIONS, AND METHODS OF USE
申请人:Leivers Martin Robert
公开号:US20090226398A1
公开(公告)日:2009-09-10
Disclosed are compounds and compositions of Formula (I), pharmaceutically acceptable salts and solvates thereof, and their preparation and uses for treating viral infections mediated at least in part by a virus in the Flaviviridae family of viruses.
Compounds of the formula I:
or pharmaceutically acceptable salts thereof,
wherein R
1
, R
2
, R
3
and R
4
are as defined herein. Also disclosed are methods of making the compounds and using the compounds for treatment of diseases associated with calcium release-activated calcium channels (CRAC).
The invention relates to compounds of formula
wherein the substituents are described herein. The compounds may be used in the treatment of illnesses based on the glycine uptake inhibitor, such as psychoses, pain, neurodegenerative disfunction in memory and learning, schizophrenia, dementia and other diseases in which cognitive processes are impaired, such as attention deficit disorders or Alzheimer's disease.
Truce–Smiles rearrangement of substituted phenyl ethers
作者:Joel R. Kosowan、Zemane W'Giorgis、Ravneet Grewal、Tabitha E. Wood
DOI:10.1039/c5ob00812c
日期:——
ring activation by strong-electron withdrawing substituents in substrates for the intramolecular nucleophilic aromaticsubstitution reaction known as the Truce–Smiles rearrangement was examined. Preliminary mechanistic experiments support the SNAr mechanism, including 1H and 13C NMR spectra of a Meisenheimer intermediate formed in situ. The rearrangement was generally observed to be successful for substrates
研究了分子内亲核芳族取代反应(称为Truce-Smiles重排)中底物中强电子吸收取代基对芳环活化的要求。初步的力学实验支持S N Ar机理,包括原位形成的Meisenheimer中间体的1 H和13 C NMR光谱。通常观察到重排对于具有强吸电子取代基(例如硝基,氰基和苯甲酰基官能团)的底物是成功的,但对于具有多个弱吸电子取代基(例如氯和溴官能团)的底物也是如此组。这些结果提供进一步的澄清的芳基取代基在这种类型的S的影响Ñ的Ar反应。另外,该调查还揭示了某些底物进行的一些串联环化和/或消除反应。