IE33571L - Preparation of cephalosporins - Google Patents

Preparation of cephalosporins

Info

Publication number
IE33571L
IE33571L IE691159A IE115969A IE33571L IE 33571 L IE33571 L IE 33571L IE 691159 A IE691159 A IE 691159A IE 115969 A IE115969 A IE 115969A IE 33571 L IE33571 L IE 33571L
Authority
IE
Ireland
Prior art keywords
hydrogen
nitrogen
aliphatic unsaturation
ring
bonded
Prior art date
Application number
IE691159A
Other versions
IE33571B1 (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
Application filed by Lilly Co Eli filed Critical Lilly Co Eli
Publication of IE33571L publication Critical patent/IE33571L/en
Publication of IE33571B1 publication Critical patent/IE33571B1/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02Silicon compounds
    • C07F7/08Compounds having one or more C—Si linkages
    • C07F7/18Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
    • C07F7/1896Compounds having one or more Si-O-acyl linkages
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02Silicon compounds
    • C07F7/08Compounds having one or more C—Si linkages
    • C07F7/10Compounds having one or more C—Si linkages containing nitrogen having a Si-N linkage

Landscapes

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

Abstract

1,269,697. Silylated cephalosporin derivatives. ELI LILLY & CO. 22 Aug., 1969 [23 Aug., 1968], No. 42066/69. Heading C2A. [Also in Division C3] Novel silylated cephalosporin derivatives of Formula VI wherein R<SP>11</SP> is hydrogen or acetoxy, and R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> are each hydrogen or a C 1 to C 8 hydrocarbon radical free from aliphatic unsaturation, with not more than two of R<SP>1</SP> , R<SP>2</SP> and R<SP>3</SP> bonded to the same silicon atom being hydrogen, and R<SP>10</SP> is hydrogen or the group: are prepared by reacting 7-aminocephalosporanic acid or 7-amino-desacetoxycephalosporanic acid or a salt thereof, with a mono- or bissilylamide of one of the Formulµ I to V wherein R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> are as defined above; R<SP>5</SP> and R<SP>9</SP> are each hydrogen or C 1 to C 8 hydrocarbon free from aliphatic unsaturation, R<SP>8</SP> is C 1 to C 8 hydrocarbon free from aliphatic unsaturation; each of R<SP>4</SP>, R<SP>6</SP> and R<SP>7</SP> is hydrogen or C 1 to C 8 hydrocarbon free from aliphatic unsaturation, or R<SP>6</SP> and R<SP>7</SP> together with the common nitrogen complete a heterocyclic ring containing 5 to 6 ring-forming atoms, one of which can be oxygen para to the nitrogen, or 4 to 6 ring-forming carbons provided that R<SP>6</SP> and R<SP>7</SP> together contain not more than 18 carbons and that if R<SP>6</SP> is alkyl with tert. carbon bonded to the nitrogen then R<SP>7</SP> is hydrogen; or R<SP>4</SP> and R<SP>6</SP> together with the attached nitrogens and the carbonyl group form a heterocyclic ring containing 5 to 6 ring-forming atoms and 2 to 3 methylene ring-forming carbon atoms; and Y is a C 3 to C 18 alkylene group with a 3 to 5 carbon chain between the nitrogen and the carbonyl group to which Y is bonded, the reaction being effected in an anhydrous aprotic solvent at - 25‹ to +50‹ C. The invention includes a composition comprising (a) a compound of Formula VI above, (b) a silylamide of one of Formulµ I to V above and (c) an anhydrous solvent for (a) and (b) of which the molecules do not contain Zerewitinoff hydrogen. The silylated cephalosporins may be converted to known antibiotically active cephalosporins by reacting with an appropriate acylating agent to give the corresponding N-acylated silyl ester which is treated with a C 1 to C 6 alkanol to give the required cephalosporin which is recovered from the solution preferably as the Na or K salt. Cephalothin, cephaloglycin and cephalexin are prepared in this way. [GB1269697A]
IE1159/69A 1968-08-23 1969-08-15 Preparation of cephalosporin compounds IE33571B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US75499268A 1968-08-23 1968-08-23

Publications (2)

Publication Number Publication Date
IE33571L true IE33571L (en) 1970-02-23
IE33571B1 IE33571B1 (en) 1974-08-21

Family

ID=25037254

Family Applications (1)

Application Number Title Priority Date Filing Date
IE1159/69A IE33571B1 (en) 1968-08-23 1969-08-15 Preparation of cephalosporin compounds

Country Status (15)

Country Link
JP (1) JPS5127676B1 (en)
AT (1) AT313472B (en)
BE (1) BE737761A (en)
CH (1) CH531005A (en)
CY (1) CY795A (en)
DE (1) DE1942454A1 (en)
FR (1) FR2016284B1 (en)
GB (1) GB1269697A (en)
HK (1) HK17276A (en)
IE (1) IE33571B1 (en)
IL (1) IL32815A (en)
MY (1) MY7500103A (en)
NL (1) NL168840C (en)
SE (1) SE385898B (en)
ZA (1) ZA695612B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4182709A (en) * 1976-01-15 1980-01-08 Glaxo Group Limited Manufacture of semi-synthetic penicillin antibiotics
IT1053313B (en) * 1976-01-15 1981-08-31 Ankerfarm Spa PROCEDURE FOR PRODUCING SEMI-SYNTHETIC ANTIBIOTICS
IT1063088B (en) * 1976-06-01 1985-02-11 Dobfar Spa AZETIDINONIC DERIVATIVES AND PROCEDURE FOR THE PREPARATION OF CEPHALOSPORINE
CN103193799B (en) * 2013-03-29 2015-08-12 武汉回盛生物科技有限公司 A kind of chemical synthesis process of Cefquinome sulfate

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE311519B (en) * 1962-12-14 1969-06-16 Astra Ab

Also Published As

Publication number Publication date
SE385898B (en) 1976-07-26
FR2016284B1 (en) 1974-02-01
IE33571B1 (en) 1974-08-21
FR2016284A1 (en) 1970-05-08
IL32815A0 (en) 1969-11-12
DE1942454A1 (en) 1970-08-27
IL32815A (en) 1974-06-30
JPS5127676B1 (en) 1976-08-13
CY795A (en) 1976-12-01
NL168840C (en) 1982-05-17
AT313472B (en) 1974-02-25
NL6912811A (en) 1970-02-25
MY7500103A (en) 1975-12-31
BE737761A (en) 1970-02-23
GB1269697A (en) 1972-04-06
NL168840B (en) 1981-12-16
CH531005A (en) 1972-11-30
ZA695612B (en) 1971-03-31
HK17276A (en) 1976-04-02

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