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IE37562L - Preparation of 7-aminocephalosporanic acid - Google Patents

Preparation of 7-aminocephalosporanic acid

Info

Publication number
IE37562L
IE37562L IE730646A IE64673A IE37562L IE 37562 L IE37562 L IE 37562L IE 730646 A IE730646 A IE 730646A IE 64673 A IE64673 A IE 64673A IE 37562 L IE37562 L IE 37562L
Authority
IE
Ireland
Prior art keywords
amino
group
imino
cephalosporin
halide
Prior art date
Application number
IE730646A
Other versions
IE37562B1 (en
Original Assignee
Lilly Co Eli
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 US00249294A external-priority patent/US3840532A/en
Priority claimed from US249293A external-priority patent/US3904615A/en
Application filed by Lilly Co Eli filed Critical Lilly Co Eli
Publication of IE37562L publication Critical patent/IE37562L/en
Publication of IE37562B1 publication Critical patent/IE37562B1/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D501/00Heterocyclic compounds containing 5-thia-1-azabicyclo [4.2.0] octane ring systems, i.e. compounds containing a ring system of the formula:, e.g. cephalosporins; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring
    • C07D501/14Compounds having a nitrogen atom directly attached in position 7
    • C07D501/16Compounds having a nitrogen atom directly attached in position 7 with a double bond between positions 2 and 3
    • C07D501/187-Aminocephalosporanic or substituted 7-aminocephalosporanic acids
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D499/00Heterocyclic 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
    • C07D499/21Heterocyclic 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 with a nitrogen atom directly attached in position 6 and a carbon atom having three bonds to hetero atoms with at the most one bond to halogen, e.g. an ester or nitrile radical, directly attached in position 2
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/55Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Cephalosporin Compounds (AREA)

Abstract

1421199 Preparation of 7-amino cephalosporanic acid and derivatives ELI LILLY & CO 17 April 1973 [1 May 1972 (2)] 18391/73 Heading C2C In a process for cleaving a 7-carboxamido group of a cephalosporin to produce the corresponding 7-amino cephalosporin wherein any amino, carboxyl, hydroxy and mercapto group is blocked with a blocking reagent and wherein the blocked cephalosporin is treated with an halogenating agent to convert the 7-carboxamido group to an imino halide, the imino halide is treated with an alcohol to form an imino ether and the imino ether is hydrolysed to a 7-amino group, the invention comprises conducting the carboxyl group protecting reaction and/or the carboxamide cleavage reactions in tetrahydrofuran, bis-(2-methoxyethyl)ether, 2- methoxyethyl acetate, ethylene glycol diacetate, 1,4-dioxane, or 1,3-dioxane, or mixtures thereof. In a modification, a catalytic amount of quinoline, isoquinoline, 3-picoline, 4-picoline, or pyridine or an acid addition salt thereof or a complex of such organic base with a C 2 to C 3 alkanoyl halide is added to the reaction mixture prior to the addition of the halogenating agent, to increase the yield. [GB1421199A]
IE646/73A 1972-05-01 1973-04-25 Process for preparing a cephalosporin IE37562B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US00249294A US3840532A (en) 1972-05-01 1972-05-01 Process for cleaving cephalosporin compounds
US249293A US3904615A (en) 1972-05-01 1972-05-01 Process for cleaving cephalosporin compounds

Publications (2)

Publication Number Publication Date
IE37562L true IE37562L (en) 1973-11-01
IE37562B1 IE37562B1 (en) 1977-08-17

Family

ID=26939961

Family Applications (1)

Application Number Title Priority Date Filing Date
IE646/73A IE37562B1 (en) 1972-05-01 1973-04-25 Process for preparing a cephalosporin

Country Status (16)

Country Link
JP (1) JPS5842194B2 (en)
AR (1) AR203623A1 (en)
CH (1) CH582184A5 (en)
DD (1) DD105239A5 (en)
DE (1) DE2321234A1 (en)
ES (1) ES414153A1 (en)
FR (1) FR2183098B1 (en)
GB (1) GB1421199A (en)
HU (2) HU167444B (en)
IE (1) IE37562B1 (en)
IL (1) IL42087A (en)
NL (1) NL181197C (en)
RO (1) RO62896A (en)
SE (1) SE418746B (en)
SU (1) SU587867A3 (en)
YU (1) YU108273A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5256823U (en) * 1975-10-22 1977-04-25
DE2933075C2 (en) * 1979-08-16 1984-04-19 Zahnraederfabrik Renk Ag, 8900 Augsburg Drive and brake systems for motor vehicles
JPH0633990U (en) * 1992-09-29 1994-05-06 呉羽合繊株式会社 Coloring device
JP3487083B2 (en) 1996-02-09 2004-01-13 日立化成工業株式会社 Thermosetting resin composition and cured product thereof
CN1158289C (en) * 1997-06-04 2004-07-21 生物化学有限公司 Improved precipitation process for 7-aminocephalosporanic acid (7-ACA)
US6518420B2 (en) 1997-06-04 2003-02-11 Biochemie Gesellschaft M.B.H. Precipitation process of 7-aminocephalosporanic acid (7-ACA)
CN110094151B (en) * 2018-01-31 2020-06-16 光宝电子(广州)有限公司 Shutter

Also Published As

Publication number Publication date
YU108273A (en) 1982-02-28
GB1421199A (en) 1976-01-14
DD105239A5 (en) 1974-04-12
IL42087A0 (en) 1973-06-29
NL181197C (en) 1987-07-01
SE418746B (en) 1981-06-22
HU167444B (en) 1975-10-28
NL7306068A (en) 1973-11-05
SU587867A3 (en) 1978-01-05
FR2183098A1 (en) 1973-12-14
IL42087A (en) 1976-01-30
JPS5842194B2 (en) 1983-09-17
CH582184A5 (en) 1976-11-30
AU5468973A (en) 1974-10-24
FR2183098B1 (en) 1975-08-22
DE2321234A1 (en) 1973-11-22
IE37562B1 (en) 1977-08-17
JPS4947387A (en) 1974-05-08
HU167595B (en) 1975-11-28
RO62896A (en) 1978-03-15
ES414153A1 (en) 1976-06-01
AR203623A1 (en) 1975-09-30

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