VERFAHREN ZUR ACYLIERUNG VON THREONIN-DERIVATEN UND DEREN VERWENDUNG ZUR HERSTELLUNG VON 1,4- DIHYDROPYRIDINEN

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...

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Bibliographische Detailangaben
Hauptverfasser:	BE, MARTIN, STOLTEFUSS, JUERGEN, GROSS, RAINER, DR, HEBISCH, SIEGBERT, SCHRAMM, MATTHIAS
Format:	Patent
Sprache:	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.