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:
Feb. 08, 1977
Filed:
May. 04, 1976
Yasunobu Sato, Tokyo, JA;
Hiromu Takagi, Tokyo, JA;
Yasuo Shimoji, Tokyo, JA;
Seiji Kumakura, Tokyo, JA;
Sankyo Company Limited, Tokyo, JA;
Abstract
Pyrrolotriazolopyrimidine derivatives having the formula ##STR1## wherein R.sup.1 represents hydrogen atom or an alkyl group having from 1 to 4 carbon atoms and R.sup.2 represents an alkyl group having from 1 to 4 carbon atoms, a cycloalkyl group having from 5 to 8 carbon atoms, a phenyl group optionally substituted with one or more halogen atoms or a phenylalkyl group having the formula ##STR2## IN WHICH R.sup.3 represents hydrogen atom or an alkyl group having from 1 to 4 carbon atoms, R.sup.4 represents halogen atom, an alkyl group having from 1 to 4 carbon atoms or an alkoxy group having from 1 to 4 carbon atoms, m represents an integer from 0 to 2 and n represents an integer from 0 to 3, and pharmacologically acceptable salts thereof. The compounds are useful as vasodilating or hypotensive agents and may be prepared by reacting triazolopyrimidine derivatives having the formula ##STR3## wherein X.sup.1 and X.sup.2 may be the same or different and each represents a halogen atom and R.sup.1 has the same meaning as defined above with an amine having the formula