Organocatalytic Enantioselective Higher-Order Cycloadditions of In Situ Generated Amino Isobenzofulvenes
作者:Bjarke S. Donslund、Alicia Monleón、Teresa A. Palazzo、Mette Louise Christensen、Anne Dahlgaard、Jeremy D. Erickson、Karl Anker Jørgensen
DOI:10.1002/anie.201710694
日期:2018.1.26
The [8+2] cycloaddition of indene‐2‐carbaldehydes and nitro olefins is described to provide benzonorbornene scaffolds in a highly peri‐, diastereo‐, and enantioselective fashion in the presence of a C2‐symmetric aminocatalyst. This reaction, which proceeds through a transient semi‐aromatic amino isobenzofulvene, represents the first example of catalytic formation and transformation of these species
Substituted aurones were found to have antitrypanosomal, antifungal and immunomodulatory activity. The invention provides novel aurone compounds, pharmaceutical compositions, and methods encompassing medical and veterinary applications.
The present invention relates to a prodrug which comprises at least one pharmaceutically and/or diagnostically active compound bound by a cleavable linker, a receptor and/or antigen targeting moiety and a protein-binding moiety which is capable of binding to a carrier molecule.
THERAPEUTIC BENEFIT OF SUBOPTIMALLY ADMINISTERED CHEMICAL COMPOUNDS
申请人:BROWN Dennis M.
公开号:US20160045502A1
公开(公告)日:2016-02-18
The present invention describes methods and compositions for improving the therapeutic efficacy of therapeutic agents previously limited by suboptimal therapeutic performance by either improving efficacy as monotherapy or reducing side effects. Such methods and compositions are particularly applicable to mustard-based alkylating agents such as uracil mustard and analogs, derivatives, or prodrugs thereof, including 6-methyluracil mustard and 6-ethyluracil mustard.
[EN] METHOD FOR PREPARING ARYLVINYLSULPHONES<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ARYLVINYLSULPHONES
申请人:KEMIRA OYJ
公开号:WO2022096682A1
公开(公告)日:2022-05-12
The invention relates to a method of preparing arylvinylsulphones. The method comprises forming o a first reaction mixture comprising a catalyst complex of Cu(I)halide and a ligand, wherein the ligand is selected from mono-, bi- or polydentate amine ligands and further comprises an organic sulphonate; a reactive solvent selected from (meth)acrylonitrile or alkyl (meth)acrylate; and an aryl sulfonyl halide reactant. A reaction is allowed to proceed in the first reaction mixture at an elevated temperature, whereby an intermediate product is obtained. The unreacted reactive solvent is separated from the first reaction mixture, and the intermediate product is dissolved to a low polarity solvent to form a second reaction mixture. A base is added to the second reaction mixture, wherein the intermediate product undergoes a base-catalyzed elimination of the halogen atom from the intermediate product to form the compound according to Formula (I), preferably under cooling. Finally, the desired compound is separated from the second reaction mixture.