A general, selective synthesis of ω-hydroxyethenyl ethers
作者:E Cabianca、F Chéry、P Rollin、A Tatibouët、O De Lucchi
DOI:10.1016/s0040-4039(01)02195-5
日期:2002.1
A general selective synthesis of β-, γ- and δ-hydroxyethenyl ethers, a class of compounds containing two mutually reactive functionalities positioned at an interacting distance, is based on the reaction of diols with 1,2-bis-(phenylsulfonyl)ethylene (BPSE) followed by reductive elimination of the resulting β-phenylsulfonyl acetals with sodium amalgam.
Chiral palladium bis(phosphite) PCP-pincer complexes via ligand C–H activation
作者:R. Angharad Baber、Robin B. Bedford、Michael Betham、Michael E. Blake、Simon J. Coles、Mairi F. Haddow、Michael B. Hursthouse、A. Guy Orpen、Lukasz T. Pilarski、Paul G. Pringle、Richard L. Wingad
DOI:10.1039/b609704a
日期:——
The synthesis of a range of chiralpalladiumbis(phosphite) pincercomplexes has been achieved via C-H activation of the parent ligands and one of the complexes formed shows good activity in the catalytic allylation of aldehydes.
[EN] PROCESS FOR THE PREPARATION OF A FLUOROLACTON DERIVATIVE<br/>[FR] PROCÉDÉ DE PRÉPARATION D'UN DÉRIVÉ DE FLUOROLACTONE
申请人:HOFFMANN LA ROCHE
公开号:WO2014108525A1
公开(公告)日:2014-07-17
A novel process for the preparation of a fluorolactone derivative of the formula (I) and of its acylated derivative of formula (V) wherein R1 stands for a hydroxy protecting group is described. The acylated fluorolactones of formula (V), particularly the benzoyl derivative with R1 =benzyl are important precursors for the synthesis of prodrug compounds which have the potential to be potent inhibitors of the Hepatitis C Virus (HCV) NS5B polymerase.
PREPARATION OF NUCLEOSIDES RIBOFURANOSYL PYRIMIDINES
申请人:Axt Steven D.
公开号:US20100056770A1
公开(公告)日:2010-03-04
The present process provides an improved method for the preparation of 4-amino-1-((2R,3R,4R,5R)-3-fluoro-4-hydroxy-5-hydrox-ymethyl-3-methyl-tetrahydro-furan-2-yl)-1H-pyrimidin-2-one of the formula (IV) which is a potent inhibitor of Hepatitis C Virus (HCV) NS5B polymerase.
Preparation of nucleosides ribofuranosyl pyrimidines
申请人:Axt Steven D.
公开号:US20080139802A1
公开(公告)日:2008-06-12
The present process provides an improved method for converting 2′-deoxy-2′-fluoro-2′-methyl-D-ribonolactones derivatives to 3-fluoro-3-methyl-2-chlorofuran compounds which are useful for the synthesis of nucleosides and improved processes for the synthesis of the D-ribonolactone compounds.