PROCESS FOR THE PREPARATION OF MONO, BI AND TRICYCLIC AMINO ACIDS, INTERMEDIARY COMPOUNDS AND THEIR PREPARATION

The invention relates to a process for preparing compounds of the formula I I in which R stands for hydrogen, alkyl or aralkyl and R1 to R5 are identical or different radicals, (substituted) alkyl, cycloalkyl or (substituted) aryl or in which the pairs of radicals R1 and R2, R2 and R3, and R4 and R5...

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Bibliographic Details
Main Authors URBACH, HANSJORG, HENNING, RAINER
Format Patent
LanguageEnglish
German
Published 23.11.1989
Edition4
Subjects
APPARATUS THEREFOR
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
HETEROCYCLIC COMPOUNDS
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:The invention relates to a process for preparing compounds of the formula I I in which R stands for hydrogen, alkyl or aralkyl and R1 to R5 are identical or different radicals, (substituted) alkyl, cycloalkyl or (substituted) aryl or in which the pairs of radicals R1 and R2, R2 and R3, and R4 and R5 together with the carbon atom(s) supporting them form a mono- or bicyclic ring system and the other radicals are hydrogen, by treating a compound of the formula II II in which R and R1 and R5 have the abovementioned meaning and R6 and R7 denote alkyl or aralkyl or together with the nitrogen atom supporting them form a heterocycle which can additionally contain an oxygen atom, with a reducing agent.
Bibliography:Application Number: EP19870116920