Reactivity of new azido-complexes of titanium and vanadium
作者:Robert Choukroun、Dani�le Gervais
DOI:10.1039/dt9800001800
日期:——
Mono- and bis-azido-complexes of TiIV and VV have been prepared in good yield from chloro- or alkoxo-derivatives of the transition metal, using SiMe3(N3) as azide source. The stable azides [Ti(η-C5H5)Cl2(N3)], [Ti(OPri)2(N3)2], [TiCl(OPri)2(N3)], [VO(OPri)(N3)2], and [VO(OCH2But)(N3)2] have been isolated and characterized. The azido-group can be displaced by reaction with protic reagents and HN3 is
Synthesis of (S)-FTY720 vinylphosphonate analogues and evaluation of their potential as sphingosine kinase 1 inhibitors and activators
作者:Zheng Liu、Neil MacRitchie、Susan Pyne、Nigel J. Pyne、Robert Bittman
DOI:10.1016/j.bmc.2013.02.042
日期:2013.5
Sphingosinekinase 1 (SK1) is over-expressed in many cancers where it provides a selective growth and survival advantage to these cells. SK1 is thus a target for anti-cancer agents that can promote apoptosis of cancer cells. In previous work, we synthesized a novel allosteric SK1 inhibitor, (S)-FTY720 vinylphosphonate. We now report a more expeditious route to this inhibitor which features B-alkyl