ES367574A1 - Method of preparation of piracine derivatives. (Machine-translation by Google Translate, not legally binding) - Google Patents

Method of preparation of piracine derivatives. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES367574A1
ES367574A1 ES367574A ES367574A ES367574A1 ES 367574 A1 ES367574 A1 ES 367574A1 ES 367574 A ES367574 A ES 367574A ES 367574 A ES367574 A ES 367574A ES 367574 A1 ES367574 A1 ES 367574A1
Authority
ES
Spain
Prior art keywords
group
preparation
formula
translation
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
ES367574A
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.)
Daiichi Pharmaceutical Co Ltd
Original Assignee
Daiichi Pharmaceutical 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
Application filed by Daiichi Pharmaceutical Co Ltd filed Critical Daiichi Pharmaceutical Co Ltd
Priority to ES367574A priority Critical patent/ES367574A1/en
Publication of ES367574A1 publication Critical patent/ES367574A1/en
Expired legal-status Critical Current

Links

Abstract

Preparation method of pyrazine derivatives, and more particularly for the preparation of the compound of the formula: **(See formula)** wherein X is selected from the group consisting of alkoxy, piperidino, morpholino and oxazolidino and Y is selected from the group consisting of hydrogen and alkoxy, said alkoxy group containing from 1 to 5 carbon atoms, characterized in that it comprises reacting a derivative of pyrazine-2-carboxylic acid represented by the formula: **(See formula)** wherein Y has the same value as defined above, with alkyl alcohol containing 1 to 5 carbon atoms in the presence of a catalyst chosen from the group consisting of mineral acids and thionyl chloride to produce the ester represented by the following formula : **(See formula)** wherein Y has the same value as defined above and R represents a C1-C5 alkyl radical, and then reacting the ester with an amine chosen from the group consisting of piperidine, morpholine and oxazolidine. (Machine-translation by Google Translate, not legally binding)
ES367574A 1969-05-09 1969-05-09 Method of preparation of piracine derivatives. (Machine-translation by Google Translate, not legally binding) Expired ES367574A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES367574A ES367574A1 (en) 1969-05-09 1969-05-09 Method of preparation of piracine derivatives. (Machine-translation by Google Translate, not legally binding)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES367574A ES367574A1 (en) 1969-05-09 1969-05-09 Method of preparation of piracine derivatives. (Machine-translation by Google Translate, not legally binding)

Publications (1)

Publication Number Publication Date
ES367574A1 true ES367574A1 (en) 1971-05-16

Family

ID=8452835

Family Applications (1)

Application Number Title Priority Date Filing Date
ES367574A Expired ES367574A1 (en) 1969-05-09 1969-05-09 Method of preparation of piracine derivatives. (Machine-translation by Google Translate, not legally binding)

Country Status (1)

Country Link
ES (1) ES367574A1 (en)

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