The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 05, 1980
Filed:
Mar. 30, 1978
Alexandr P Skoldinov, Moscow, SU;
Arkady M Likhosherstov, Moscow, SU;
Vitaly P Peresada, Moscow, SU;
Konstantin O Chizhov, Moscow, SU;
Nauchno-Issledovatelsky Institut Farmakologii, Moscow, SU;
Abstract
The novel compound according to the present invention, viz. 3,4-dihydropyrrolo-[1,2-a]-pyrazine has the formula: ##STR1## The method of preparing this compound comprises reacting dialkylacetals or dioxalane of a 2,5-dialkoxytetrahydrofurfurol with ethylenediamine in a medium of lower aliphatic acids at a temperature within the range of from 100.degree. to 150.degree. C., followed by isolation of the desired product. The novel compound according to the present invention, viz. 3,4-dihydropyrrolo-[1,2-a]-pyrazine, owing to a simple method for producing same, simplifies the process of manufacture of physiologically active compounds employed in neuroleptic or coronary dilating preparations, wherein it may be used as the starting material.