79016-11-8Relevant articles and documents
Aza-heterocyclic frameworks through intramolecular π-system trapping of spiro-N-acyliminiums generated from isoindolinone
Chortani, Sarra,Othman, Mohamed,Lawson, Ata Martin,Romdhane, Anis,Ben Jannet, Hichem,Knorr, Michael,Brieger, Lukas,Strohmann, Carsten,Da?ch, Adam
, p. 2393 - 2403 (2021/02/16)
Spiro-acetoxylactams as key substrates were obtained straightforwardly by the tandem regioselective reduction/O-acylation of spiro-isoindolinone-imides. The latter were produced in large scale in three steps from homophthalic acid. These imides were useful to provide in one step isoindolinones bearing hydroxymethyl-amide functions, tethered at quaternary carbon centre with promising biological issues. Submitted to Br?nsted (TFA neat) and Lewis acid (trimethylsilyltrifluoro-methanesulfonic (TMSOTf) 10 mol%), the spiro-acetoxylactams undergo π-cyclization of spiro-N-acyliminiums to provide diastereoselectively with π-aromatic original pyrrolopyrido- and pyrroloazepino-isoindoles fused or not to aromatic systems. With π-olefins, pyrrolopyridines and pyrrolo-azepines fused to isoindoline or containing amino-acids were isolated. A reaction mechanism producing all these systems is also discussed.
2-PHENYL BENZOYLAMIDES
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, (2011/12/04)
Compounds of Formula I that inhibit microsomal triglyceride transfer protein (MTP) and/or apolipoprotein B (Apo B) secretion and their uses in the treatment of diseases linked thereto in animals are described herein.
Halolactonization of γ-acetylenic acids: systhesis of novel spiroisoindole halobutyrolactones
Rammah, Mohamed M.,Othman, Mohamed,Msaddek, Moncef,Rammah, Mohamed B.
scheme or table, p. 1971 - 1981 (2009/04/06)
γ-Acetylenic carboxylic acids are cyclized to spirohalo butyrolactones, in the presence of NBS or NIS and K2CO3. The corresponding 5(E)-haloalkylidene-spirobutyrolactones were isolated in high yields, and this process constitutes an easy and efficient route to analogous structures of natural products of biological interest.