DE1593738A1 - Process for the preparation of the L-isomers of 3,4-dihydroxy-alpha-methylphenylalanine - Google Patents

Process for the preparation of the L-isomers of 3,4-dihydroxy-alpha-methylphenylalanine

Info

Publication number
DE1593738A1
DE1593738A1 DE19671593738 DE1593738A DE1593738A1 DE 1593738 A1 DE1593738 A1 DE 1593738A1 DE 19671593738 DE19671593738 DE 19671593738 DE 1593738 A DE1593738 A DE 1593738A DE 1593738 A1 DE1593738 A1 DE 1593738A1
Authority
DE
Germany
Prior art keywords
isomers
dihydroxy
preparation
methylphenylalanine
alpha
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DE19671593738
Other languages
German (de)
Inventor
Hjarne Dyrsting
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Merck and Co Inc
Original Assignee
Merck and Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Merck and Co Inc filed Critical Merck and Co Inc
Publication of DE1593738A1 publication Critical patent/DE1593738A1/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C227/00—Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton
    • C07C227/14—Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton from compounds containing already amino and carboxyl groups or derivatives thereof
    • C07C227/16—Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton from compounds containing already amino and carboxyl groups or derivatives thereof by reactions not involving the amino or carboxyl groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Claims (1)

Patentanspruch: Verfahren zur Herstellung der L-Isomere von 3,4-Dihydroxy-α-methyl-phenylalanin der Formel dadurch gekennzeichnet, daß man die L-Isomere von 3,4-Methylendioxy-α-methyl-phenylalanin mit einer starken Mineralsaure in Gegenwart einer formaldehydbindenden Substanz hydrolysiert,Claim: Process for the preparation of the L-isomers of 3,4-dihydroxy-α-methyl-phenylalanine of the formula characterized in that the L-isomers of 3,4-methylenedioxy-α-methyl-phenylalanine are hydrolyzed with a strong mineral acid in the presence of a formaldehyde-binding substance,
DE19671593738 1966-01-20 1967-01-17 Process for the preparation of the L-isomers of 3,4-dihydroxy-alpha-methylphenylalanine Pending DE1593738A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK31066A DK123864B (en) 1966-01-20 1966-01-20 Process for the preparation of the L-form of 3,4-dihydroxy-α-methylphenylalanine.

Publications (1)

Publication Number Publication Date
DE1593738A1 true DE1593738A1 (en) 1971-01-28

Family

ID=8092106

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19671593738 Pending DE1593738A1 (en) 1966-01-20 1967-01-17 Process for the preparation of the L-isomers of 3,4-dihydroxy-alpha-methylphenylalanine

Country Status (5)

Country Link
AT (1) AT278753B (en)
DE (1) DE1593738A1 (en)
DK (1) DK123864B (en)
NL (1) NL6700784A (en)
SE (1) SE345445B (en)

Also Published As

Publication number Publication date
DK123864B (en) 1972-08-14
SE345445B (en) 1972-05-29
AT278753B (en) 1970-02-10
NL6700784A (en) 1967-07-21

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