4-amino-butanoic acid derivatives, process of preparation...

Details 4-amino-butanoic acid derivatives, process of preparation... 4-amino-butanoic acid derivatives, process of preparation...

C - Chemistry, Metallurgy

07

C

260/295, 260/314

C07C 229/22 (2006.01) C07C 271/22 (2006.01) C07D 209/20 (2006.01) C07D 233/61 (2006.01)

Patent

CA 1271478

NOVEL 4-AMINO-BUTANOIC ACID DERIVATIVES, PROCESS OF PREPARATION AND USETHEREOF. ABSTRACT OF THE DISCLOSURE The invention relates to 4-amino-butanoic acid derivatives of general formula : Image in which : M represents an alkali metal atom, R represents a protected amino group, R1 represents a labile group, R2 represents hydrogen, a branched- or straight-chain alkyl radical having from 1 to 6 carbon atoms, a lower methyloxyalkyl, a lower methylthioalkyl, a lower (lower alkyl)-aminoalkyl, a lower di-(lower alkyl) aminoalkyl or a lower hydroxyalkyl radical or R2 represents one of the radicals of general formulae : Cy-A- , Cy-O-A'- , R-A'- or R3S-A'- in which : Cy represents an aromatic or alicyclic hydrocarbon radical or heterocyclic radical having one oxygen or sulphur atom or one or two nitrogen atoms, Cy being optionally mono-, di- or tri-substituted by radicals comprising hydroxy, lower alkyl, lower alkoxy, trifluoromethyl, nitro or halogeno radicals, A represents a single bond or a branched- or straight-chain alkylene radical having from 1 to 5 carbon atoms, A' represents a branched- or straight-chain alkylene radical having from 1 to 5 carbon atoms, R3 represents a S-protecting group. These compounds are useful as intermediate products more particularly for the final synthesis of (3S,4S)-3-hydroxy-4-amino-6-methyl-heptanoic acid or sta-tine.

483070

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