Towards novel difluorinated sugar mimetics; syntheses and conformational analyses of highly-functionalised difluorinated cyclooctenones
作者:Gerry A. Griffith、Jonathan M. Percy、Stéphane Pintat、Clive A. Smith、Neil Spencer、Emi Uneyama
DOI:10.1039/b505978j
日期:——
Highly-functionalised difluorinated cyclooctenones were synthesised from trifluoroethanol using either metallated difluoroenol acetal or carbamate chemistry, followed by a [2,3]-Wittig rearrangement or aldol reaction. Efficient RCM reactions afforded the title compounds which showed rather restricted fluxional behaviour by VT (19)F NMR. Topological characterisation by molecular modelling and NOESY/ROESY
Rapid assembly of highly-functionalised difluorinated cyclooctenones via ring-closing metathesis
作者:Benson M. Kariuki、W. Martin Owton、Jonathan M. Percy、Stéphane Pintat、Clive A. Smith、Neil S. Spencer、Andrew C. Thomas、Martin Watson
DOI:10.1039/b109651f
日期:2002.1.30
Building block methodology from trifluoroethanol and ring-closing metathesis using a Fürstner modification of Grubbs′ conditions allows the rapid synthesis of novel difluorinated cyclooctenones.