ES433302A1 - A procedure to obtain cefalosporine derivatives. (Machine-translation by Google Translate, not legally binding) - Google Patents

A procedure to obtain cefalosporine derivatives. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES433302A1
ES433302A1 ES74433302A ES433302A ES433302A1 ES 433302 A1 ES433302 A1 ES 433302A1 ES 74433302 A ES74433302 A ES 74433302A ES 433302 A ES433302 A ES 433302A ES 433302 A1 ES433302 A1 ES 433302A1
Authority
ES
Spain
Prior art keywords
formula
group
translation
procedure
machine
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
ES74433302A
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.)
Takeda Pharmaceutical Co Ltd
Original Assignee
Takeda Chemical Industries 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 JP741521A external-priority patent/JPS57873B2/ja
Priority claimed from JP49020752A external-priority patent/JPS50111093A/ja
Priority claimed from JP4257474A external-priority patent/JPS57874B2/ja
Priority claimed from JP8262374A external-priority patent/JPS5652908B2/ja
Application filed by Takeda Chemical Industries Ltd filed Critical Takeda Chemical Industries Ltd
Publication of ES433302A1 publication Critical patent/ES433302A1/en
Expired legal-status Critical Current

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  • Cephalosporin Compounds (AREA)

Abstract

A procedure to obtain cephalosporin derivatives of the formula: **(See formula)** X represents oxygen or sulfur or a group of the formula -NR2 where R2 is hydrogen or an alcoholic group and, in the case of being an alcoholic group, can form a ring with and Y represents the acetoxy group or a group of the formula -SR3 (where R3 is a nitrogen containing heterocyclic group), or a pharmaceutically acceptable salt thereof, which comprises subjecting a compound of the formula: **(See formula)** wherein each of the symbols has the same meaning as described above, or a salt or ester thereof, to a ring closure reaction with removal of water. (Machine-translation by Google Translate, not legally binding)
ES74433302A 1973-12-25 1974-12-24 A procedure to obtain cefalosporine derivatives. (Machine-translation by Google Translate, not legally binding) Expired ES433302A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP741521A JPS57873B2 (en) 1973-12-25 1973-12-25
JP49020752A JPS50111093A (en) 1974-02-20 1974-02-20
JP4257474A JPS57874B2 (en) 1974-04-15 1974-04-15
JP8262374A JPS5652908B2 (en) 1974-07-17 1974-07-17

Publications (1)

Publication Number Publication Date
ES433302A1 true ES433302A1 (en) 1977-03-01

Family

ID=27453424

Family Applications (1)

Application Number Title Priority Date Filing Date
ES74433302A Expired ES433302A1 (en) 1973-12-25 1974-12-24 A procedure to obtain cefalosporine derivatives. (Machine-translation by Google Translate, not legally binding)

Country Status (1)

Country Link
ES (1) ES433302A1 (en)

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