Process for the preparation of chiral keto-heterocycles of...

C - Chemistry – Metallurgy – 07 – D

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C07D 277/30 (2006.01) C07D 213/50 (2006.01) C07D 213/58 (2006.01) C07D 233/64 (2006.01) C07D 235/14 (2006.01) C07D 235/16 (2006.01) C07D 239/26 (2006.01) C07D 251/24 (2006.01) C07D 263/32 (2006.01) C07D 263/56 (2006.01) C07D 275/04 (2006.01) C07D 277/28 (2006.01) C07D 277/64 (2006.01) C07D 405/12 (2006.01) C07D 413/12 (2006.01) C07D 417/06 (2006.01) C07D 417/12 (2006.01) C07D 417/14 (2006.01)

Patent

CA 2253835

A process for the preparation of novel keto heterocycle derivatives of basic natural and unnatural amino acids which affords products of high enantiomeric excess where a metalated heterocycle is reacted with N,O-dialkyl amide of an amino acid containing arylsulphonamide protected side chain amine in high chemical and optical yield as well as the novel compounds obtained by the process.

Procédé servant à préparer de nouveaux dérivés de céto-hétérocycles d'acides aminés de base naturels et non naturels, ce qui permet d'obtenir des produits présentant un fort excédent énantiomère, ainsi que des caractéristiques chimiques et optiques excellentes et consistant à effectuer la réaction d'un hétérocycle, dans lequel on a introduit un métal, avec un N,O-dialkyleamide d'un acide aminé contenant une amine à chaîne latérale protégée par arylsulfonamide. Les nouveaux composés préparés au moyen de ce procédé sont décrits.

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