ES443597A1 - Isoclavulanic acid derivatives - Google Patents

Isoclavulanic acid derivatives

Info

Publication number
ES443597A1
ES443597A1 ES443597A ES443597A ES443597A1 ES 443597 A1 ES443597 A1 ES 443597A1 ES 443597 A ES443597 A ES 443597A ES 443597 A ES443597 A ES 443597A ES 443597 A1 ES443597 A1 ES 443597A1
Authority
ES
Spain
Prior art keywords
formula
acid derivatives
isoclavulanic
group
ester
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
ES443597A
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.)
Beecham Group PLC
Original Assignee
Beecham Group PLC
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 Beecham Group PLC filed Critical Beecham Group PLC
Publication of ES443597A1 publication Critical patent/ES443597A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D503/00—Heterocyclic compounds containing 4-oxa-1-azabicyclo [3.2.0] heptane ring systems, i.e. compounds containing a ring system of the formula:, e.g. oxapenicillins, clavulanic acid derivatives; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A process for the isomerization of isoclavulanic acid derivatives of the formula: ** (see formula) ** Or a salt or ester thereof, wherein r is a hydrogen atom or an acyl group, which process consists of isomerizing a compound of formula (VI): ** (see formula) ** Or a salt or ester thereof, where r is defined in relation to formula (I), and then, if desired, converting the function derived from the carboxylic acid in position 2 to another function derived from carboxylic acid and/or convert a group r into another group r. (Machine-translation by Google Translate, not legally binding)
ES443597A 1974-12-18 1975-12-17 Isoclavulanic acid derivatives Expired ES443597A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB54788/74A GB1534508A (en) 1974-12-18 1974-12-18 Isoclavulanic acid derivatives

Publications (1)

Publication Number Publication Date
ES443597A1 true ES443597A1 (en) 1977-08-16

Family

ID=10472081

Family Applications (1)

Application Number Title Priority Date Filing Date
ES443597A Expired ES443597A1 (en) 1974-12-18 1975-12-17 Isoclavulanic acid derivatives

Country Status (4)

Country Link
BE (1) BE836652A (en)
ES (1) ES443597A1 (en)
GB (1) GB1534508A (en)
ZA (1) ZA757693B (en)

Also Published As

Publication number Publication date
GB1534508A (en) 1978-12-06
BE836652A (en) 1976-06-15
ZA757693B (en) 1976-11-24

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19980202