Debenzylation using catalytic hydrogenolysis in trifluoroethanol, and the total synthesis of (−)-raumacline
摘要:
N-Debenzylations using catalytic hydrogenolysis often fail to take place unless alcoholic solvents are used, but this can lead to N-alkylation as a side reaction; using trifluoroethanol as the solvent overcomes this problem, and leads to highly reliable hydrogenolyses for a wide range of substrates, including the final deprotection step in our total synthesis of (-)-raumacline. (c) 2008 Elsevier Ltd. All rights reserved.
[EN] IMIDAZO [1,2-C] QUINAZOLIN-5-AMINE COMPOUNDS WITH A2A ANTAGONIST PROPERTIES<br/>[FR] COMPOSÉS IMIDAZO[1,2-C]QUINAZOLIN-5-AMINE PRÉSENTANT DES PROPRIÉTÉS ANTAGONISTES DU A2A
申请人:MERCK SHARP & DOHME
公开号:WO2019118313A1
公开(公告)日:2019-06-20
Disclosed are compounds having the structure of Formula I, or a pharmaceutically acceptable salt of any thereof: wherein: "Z" and R1 are defined herein, which compounds are believed suitable for use in selectively antagonizing the A2a receptors, for example, those found in high density in the basal ganglia. Such compounds and pharmaceutical formulations are believed to be useful in treatment or management of neurodegenerative diseases, for example, Parkinson's disease, or movement disorders arising from use of certain medications used in the treatment or management of Parkinson's disease.
Debenzylation using catalytic hydrogenolysis in trifluoroethanol, and the total synthesis of (−)-raumacline
作者:Patrick D. Bailey、Mark A. Beard、Hoa P.T. Dang、Theresa R. Phillips、Richard A. Price、James H. Whittaker
DOI:10.1016/j.tetlet.2008.01.104
日期:2008.3
N-Debenzylations using catalytic hydrogenolysis often fail to take place unless alcoholic solvents are used, but this can lead to N-alkylation as a side reaction; using trifluoroethanol as the solvent overcomes this problem, and leads to highly reliable hydrogenolyses for a wide range of substrates, including the final deprotection step in our total synthesis of (-)-raumacline. (c) 2008 Elsevier Ltd. All rights reserved.