Converting gem-Dimethyl Groups into Cyclopropanes via Pd-Catalyzed Sequential C−H Activation and Radical Cyclization
摘要:
A novel route to the synthesis of cyclopropane derivatives is described. 1,1-Dimethyls in 2-(1,1-dimethylalkyl)dimethyloxazolines are first converted into 1,3-diiodide derivatives via Pd-catalyzed sequential C-H activation and then radically cyclized to provide 2-(1-alkylcylclopropyl)dimethyloxazolines. The use of EtOAc as a solvent is crucial for the diiodination of the functionalized substrates.
A compound of formula (I)
as well as pharmaceutically acceptable salt thereof, wherein R
1
to R
5
have the significance given in claim
1
, can be used as a medicament.
式(I)的化合物以及其药学上可接受的盐,其中R1至R5具有权利要求1中给定的含义,可用作药物。
[EN] FUSED HETEROCYCLIC COMPOUNDS AS S1P MODULATORS<br/>[FR] COMPOSÉS HÉTÉROCYCLIQUES CONDENSÉS À TITRE DE MODULATEURS DE S1P
申请人:ABBVIE INC
公开号:WO2017036978A1
公开(公告)日:2017-03-09
The invention relates to heterocyclic compounds as S1P modulators, pharmaceutical compositions comprising such compounds, and uses thereof in the treatment, alleviation or prevention of diseases or disorders mediated by an S1P receptor.
[EN] COMBINATIONS OF HEPATITIS C VIRUS INHIBITORS<br/>[FR] ASSOCIATIONS D'INHIBITEURS DU VIRUS DE L'HÉPATITE C
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2015005901A1
公开(公告)日:2015-01-15
The present disclosure is generally directed to antiviral compounds, and more specifically directed to combinations of compounds which can inhibit the function of the NS5A protein encoded by Hepatitis C virus (HCV), compositions comprising such combinations, and methods for inhibiting the function of the NS5A protein.
The present disclosure is generally directed to antiviral compounds, and more specifically directed to combinations of compounds which can inhibit the function of the NS5A protein encoded by Hepatitis C virus (HCV), compositions comprising such combinations, and methods for inhibiting the function of the NS5A protein.
The present invention relates to compounds of formula (I)
1
wherein R
1
, R
2
, and X are as defined in the description and claims, and pharmaceutically acceptable salts thereof. The compounds are useful for the treatment and/or prophylaxis of diseases which are associated with DPP IV, such as diabetes, particularly non-insulin dependent diabetes mellitus, and impaired glucose tolerance.