presented that gives direct access to 1,1-disubstitutedtetrahydroisoquinolines. The reaction is a titanium(III)-catalyzed reductive umpolung process in which nitriles act as effective acylation agents. The method is highly chemo- and regioselective and is demonstrated in 20 examples. It is well-suited for the large-scale synthesis of functionalized tetrahydroisoquinoline products, which is exemplified in
Development of an Efficient Synthesis of <i>rac</i>
-3-Demethoxyerythratidinone via a Titanium(III) Catalyzed Imine-Nitrile Coupling
作者:Hieu-Trinh Luu、Jan Streuff
DOI:10.1002/ejoc.201801479
日期:2019.1.10
The development of an efficient synthesis of the erythrinaalkaloid 3‐demethoxyerythratidinone is described. A titanium(III) catalyzed umpolung in form of an imine–nitrile coupling reaction serves as key step for the construction of the highlighted C–C bond.
Synthesis of naturally occurring phosphatidylinositol 3,4,5-trisphosphate [PtdIns(3,4,5)P3] and its diastereoisomers
作者:Piers R. J. Gaffney、Colin B. Reese
DOI:10.1039/b007267m
日期:——
The chemical synthesis of naturallyoccurring phosphatidylinositol 3,4,5-trisphosphate [PtdIns(3,4,5)P3] 2, in which the 1- and 2-hydroxy functions of the glycerol moiety are esterified with stearic and arachidonic acid, respectively, is described. The synthesis of three diastereoisomers 41, 42 and 43 of PtdIns(3,4,5)P3 is also reported.
Synthesis of unsaturated phosphatidylinositol 4-phosphates and the effects of substrate unsaturation on SopB phosphatase activity
作者:Samuel Furse、LokHang Mak、Edward W. Tate、Richard H. Templer、Oscar Ces、Rüdiger Woscholski、Piers R. J. Gaffney
DOI:10.1039/c4ob02258k
日期:——
Single enantiomers of PI-4-P, with a range ofsn-2-fatty acid esters, were prepared efficiently. The effects of the degree ofsn-2-unsaturation on the kinetic parameters ofSopB were determined.
Process for manufacturing purified phosphorodiamidite
申请人:——
公开号:US20030225284A1
公开(公告)日:2003-12-04
A scalable process for purification of phosphorodiamidite includes steps of solubilizing a crude phosphorodiamidite in an apolar organic solvent, contacting the non-polar organic solvent with a polar phase comprising a polar organic solvent to remove impurities from the solubilized phosphorodiamidite, and removing the non-polar organic solvent from the phosphorodiamidite.