Development of a general copper-catalyzed vinylic Finkelstein reaction—application to the synthesis of the C1–C9 fragment of laingolide B
作者:Antoine Nitelet、Kévin Jouvin、Gwilherm Evano
DOI:10.1016/j.tet.2016.07.018
日期:2016.10
conditions compatible with a range of highly functionalized substrates. The potential of this vinylic halogen exchange reaction in total synthesis and medicinal chemistry was demonstrated by its successful use for the synthesis of the C1–C9 fragment of laingolide B and for the late-stage modification of drug-like molecules. The extension of this halogen exchange to the acetylenic and allenic Finkelstein
Synthesis of Functionalized Vinyl Boronates via Ruthenium-Catalyzed Olefin Cross-Metathesis and Subsequent Conversion to Vinyl Halides
作者:Christie Morrill、Robert H. Grubbs
DOI:10.1021/jo0345345
日期:2003.7.1
using ruthenium-catalyzed olefin cross-metathesis of 1-propenyl pinacol boronate and various alkenes, including functionalized and 1,1-disubstituted alkenes. The resultant boronate cross products are stereoselectively transformed into predominantly Z-vinyl bromides and E-vinyl iodides. The vinyl bromides may be synthesized in a two-step, one-pot synthesis from a variety of olefins, resulting in a Z-selective
Methods of light activated release of ligands from endosomes
申请人:Sequitur, Inc.
公开号:US20030031655A1
公开(公告)日:2003-02-13
Methods for delivering ligands to a cell by using light to activate fluorescent ligands causing their release from endosomes. The instant methods thus increasing the efficiency of ligands, e.g. in vitro or at localized sites within a subject. The invention provides for the release of ligands by shining a light source on a cell to promote release of ligands into the cell where they can effect their function.
Palladium-Catalyzed Direct Functionalization of Imidazolinone: Synthesis of Dibromophakellstatin
作者:Jianming Lu、Xianghui Tan、Chuo Chen
DOI:10.1021/ja072844p
日期:2007.6.1
The direct C-H functionalization of imidazolinone is achieved with Pd(OAc)(2)/NaOAc in DMSO. Dibromophakellstatin can be synthesized in five steps with 40% overall yield using this new C-H activation method.