ES410059A1 - A procedure for the preparation of new derivatives of 3,4-dihydroxyphenylalanin. (Machine-translation by Google Translate, not legally binding) - Google Patents

A procedure for the preparation of new derivatives of 3,4-dihydroxyphenylalanin. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES410059A1
ES410059A1 ES410059A ES410059A ES410059A1 ES 410059 A1 ES410059 A1 ES 410059A1 ES 410059 A ES410059 A ES 410059A ES 410059 A ES410059 A ES 410059A ES 410059 A1 ES410059 A1 ES 410059A1
Authority
ES
Spain
Prior art keywords
group
acid addition
protecting group
translation
procedure
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.)
Expired
Application number
ES410059A
Other languages
Spanish (es)
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.)
LANNACHER HEILMITTEL GES MBH
Original Assignee
LANNACHER HEILMITTEL GES MBH
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
Priority claimed from AT1120071A external-priority patent/AT321278B/en
Application filed by LANNACHER HEILMITTEL GES MBH filed Critical LANNACHER HEILMITTEL GES MBH
Publication of ES410059A1 publication Critical patent/ES410059A1/en
Expired legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/55—Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A procedure for the preparation of new 3,4-dihydroxy-phenylalanine derivatives having the general formula **(See formula)** where R1 represents hydrogen or a lower alkyl group and R2 represents the acyl radical of a branched chain C5-carboxylic acid, or where the two substituents R2, taken together, represent the oxalyl, malonyl group or a group of substituted lower alkyl malonyl, and its acid addition salts, comprising acylating the phenolic hydroxyl groups of a compound having the general formula **(See formula)** wherein R1 represents hydrogen or a lower alkyl group or a carboxyl protecting group and R3 represents an amino protecting group or an acid addition salt of a compound of formula II, wherein R3 represents hydrogen, With an acylating agent that provides the radical R2, cleavage any amino protecting group and carboxyl protecting group that may be present in the product thus obtained, and, if desired, convert a base thus obtained into an acid addition salt or converting an acid addition salt thus obtained into the free base form. (Machine-translation by Google Translate, not legally binding)
ES410059A 1971-12-28 1972-12-27 A procedure for the preparation of new derivatives of 3,4-dihydroxyphenylalanin. (Machine-translation by Google Translate, not legally binding) Expired ES410059A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1120071A AT321278B (en) 1971-12-28 1971-12-28 Process for the preparation of new 3- (3,4-bis-acyloxyphenyl) -alanines and their salts
AT992872 1972-11-22

Publications (1)

Publication Number Publication Date
ES410059A1 true ES410059A1 (en) 1976-01-01

Family

ID=25605830

Family Applications (1)

Application Number Title Priority Date Filing Date
ES410059A Expired ES410059A1 (en) 1971-12-28 1972-12-27 A procedure for the preparation of new derivatives of 3,4-dihydroxyphenylalanin. (Machine-translation by Google Translate, not legally binding)

Country Status (1)

Country Link
ES (1) ES410059A1 (en)

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