GB1508063A - 2,3-dioxopiperazine derivatives - Google Patents

2,3-dioxopiperazine derivatives

Info

Publication number
GB1508063A
GB1508063A GB1536377A GB1536377A GB1508063A GB 1508063 A GB1508063 A GB 1508063A GB 1536377 A GB1536377 A GB 1536377A GB 1536377 A GB1536377 A GB 1536377A GB 1508063 A GB1508063 A GB 1508063A
Authority
GB
United Kingdom
Prior art keywords
acid
halo
derivatives
compound
alkyl
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
GB1536377A
Inventor
I Saikawa
S Takano
C Yoshida
Takashima
K Momonoi
S Kuroda
M Komatsu
T Yasuda
Kodama
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.)
Toyama Chemical Co Ltd
Original Assignee
Toyama Chemical Co Ltd
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 JP5066374A external-priority patent/JPS539238B2/ja
Priority claimed from JP5225474A external-priority patent/JPS539239B2/ja
Priority claimed from JP9199674A external-priority patent/JPS5123284A/en
Priority claimed from JP10995474A external-priority patent/JPS5139687A/en
Priority claimed from JP14249974A external-priority patent/JPS5170788A/en
Priority claimed from JP50037207A external-priority patent/JPS51113890A/en
Application filed by Toyama Chemical Co Ltd filed Critical Toyama Chemical Co Ltd
Publication of GB1508063A publication Critical patent/GB1508063A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D499/00—Heterocyclic compounds containing 4-thia-1-azabicyclo [3.2.0] heptane ring systems, i.e. compounds containing a ring system of the formula:, e.g. penicillins, penems; 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)
  • Hydrogenated Pyridines (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

1508063 2,3-Dioxo-piperazine derivatives TOYAMA CHEMICAL CO Ltd 28 April 1975 [13 Aug 1974 28 Oct 1974 17 Feb 1975] 15363/77 Divided out of 1508062 Heading C2C Novel reactive derivatives (in the carboxyl group)-acid halides, acid azides, cyanides, mixed anhydrides, active esters and active amides-of an acid I (R<SP>2</SP> and R<SP>3</SP> are linked to the same carbon atom and each is H or alkyl; and A is H, or optionally substituted alkyl, alkenyl, aryl or aralkyl) are prepared by reaction of a compound III with a compound Y-CO-R<SP>5</SP> (Y is halo, R<SP>5</SP> is halo or an ester residue) followed, where necessary, by conventional modification of the -COR<SP>5</SP> group.
GB1536377A 1974-05-09 1975-04-28 2,3-dioxopiperazine derivatives Expired GB1508063A (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP5066374A JPS539238B2 (en) 1974-05-09 1974-05-09
JP5225474A JPS539239B2 (en) 1974-05-13 1974-05-13
JP9199674A JPS5123284A (en) 1974-08-13 1974-08-13 Shinkina penishirinruino seizoho
JP10995474A JPS5139687A (en) 1974-09-26 1974-09-26 SHINKINAPENISHIRINRUINOSEIZOHO
JP14249974A JPS5170788A (en) 1974-12-13 1974-12-13 Shinkina sefuarosuhorinruino seizoho
JP50037207A JPS51113890A (en) 1975-03-27 1975-03-27 Method for preparing novel cephalosporins

Publications (1)

Publication Number Publication Date
GB1508063A true GB1508063A (en) 1978-04-19

Family

ID=27549851

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1536377A Expired GB1508063A (en) 1974-05-09 1975-04-28 2,3-dioxopiperazine derivatives

Country Status (1)

Country Link
GB (1) GB1508063A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
704A Declaration that licence is not available as of right for an excepted use (par. 4a/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19950427