[EN] NOVEL 6,7-DIHYDROPYRIDO[2,1-A]PHTHALAZIN-2-ONES FOR THE TREATMENT AND PROPHYLAXIS OF HEPATITIS B VIRUS INFECTION<br/>[FR] NOUVELLES 6,7-DIHYDROPYRIDO[2,1-A]PHTALAZIN-2-ONES POUR LE TRAITEMENT ET LA PROPHYLAXIE D'UNE INFECTION PAR LE VIRUS DE L'HÉPATITE B
申请人:HOFFMANN LA ROCHE
公开号:WO2017017043A1
公开(公告)日:2017-02-02
The invention provides novel compounds having the general formula: wherein R1 to R6 are as described herein, compositions including the compounds and methods of using the compounds.
proper substitution of the initial sulfide, to avoid the [2,3] sigmatropic rearrangement of the unsaturated ylides. One-pot reaction of (2R,5R)-dimethylthiolane with allyl halides, aldehydes, and sodium hydroxide in tert-butyl alcohol affords vinyl oxiranes in good yields. Enantiomeric excesses up to 90% and trans selectivities have been achieved with methallyl-type halides.
Ligand-Controlled Regiodivergence in the Copper-Catalyzed [2,3]- and [1,2]-Rearrangements of Iodonium Ylides
作者:Bin Xu、Uttam K. Tambar
DOI:10.1021/jacs.6b08624
日期:2016.9.21
allylic ylide rearrangements for the synthesis of complex molecules, the catalyst control of [2,3]- and [1,2]-rearrangements remains an unsolved problem. We developed the first regiodivergent [2,3]- and [1,2]-rearrangements of iodonium ylides that are controlled by copper catalysts bearing different ligands. In the presence of a 2,2'-dipyridyl ligand, diazoesters and allylic iodides react via a [2,3]-rearrangement
作者:Sergiy V. Yemets、Tatyana E. Shubina、Pavel A. Krasutsky
DOI:10.1039/c3ob27348b
日期:——
terminal alkenes with 3-iodopropene derivatives and hydrogeniodide formation within minutes at room temperature. The optimal molar ratio of iodine to substrate was decreased to 1 : 1 when hydrogeniodide formed was oxidized on a platinum anode. The electrolytic oxidation recovers iodine as a reagent and diminishes the hydrogeniodide inhibitory action to accomplish the monoiodination. The proposed reaction
An Environmentally Benign Synthesis of <i>cis</i>-2,6-Disubstituted Tetrahydropyrans via Indium-Mediated Tandem Allylation/Prins Cyclization Reaction
作者:Minh Pham、Amir Allatabakhsh、Thomas G. Minehan
DOI:10.1021/jo7016857
日期:2008.1.1
cis-2,6-disubstituted tetrahydropyrans in good yields. Evidence suggests that InI, formed upon aldehyde (R1CHO) allylation in aqueous media, acts as a promoter for the silyl-Prins reaction with the second equivalent of added aldehyde (R2CHO). The preparation of cyclohexenyl-fused pyrans via this one-pot, three-component coupling process is presented, as is a short formal synthesis of (±)-centrolobine