Process for the acylation of threonine derivatives and their use in the preparation of 1,4-dihydropyridines

Process for the acylation of threonine derivatives and their use in the preparation of 1,4-dihydropyridines

The invention relates to compounds of the general formulae (II) in which A represents hydrogen or methyl, and B represents a group of the formula -NH, -NH-CO-, -NH-CS-, -NH-COO-, -NH-SO2- or -NH-CO-NH- or -NH-CS-NH-, D represents oxygen or the group =NH, and D' represents hydroxyl or the group...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BE, MARTIN, STOLTEFUSS, JUERGEN, GROSS, RAINER, DR, HEBISCH, SIEGBERT, SCHRAMM, MATTHIAS
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM
CHEMISTRY
HETEROCYCLIC COMPOUNDS
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC CHEMISTRY
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS
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Beschreibung
Zusammenfassung:The invention relates to compounds of the general formulae (II) in which A represents hydrogen or methyl, and B represents a group of the formula -NH, -NH-CO-, -NH-CS-, -NH-COO-, -NH-SO2- or -NH-CO-NH- or -NH-CS-NH-, D represents oxygen or the group =NH, and D' represents hydroxyl or the group NH2, and E represents hydrogen or, in the case of (IIa), represents hydrogen or the group =CHR . By acylating the corresponding threonine derivatives by means of diketene and using the intermediates II for the preparation of the threonyl esters of 3,5-dicarboxy-1,4-dihydropyridine.