Derivatives of 1,3,4-thiadiazole, a method of obtaining them and
申请人:Sanofi
公开号:US05086053A1
公开(公告)日:1992-02-04
The present invention relates to thiadiazole derivatives having the formula: ##STR1## in which: R.sub.1 represents a phenyl group, non-substituted or substitued 1 to 3 times by a halogen atom, preferably chlorine or fluorine, or by a C.sub.1 -C.sub.4 alkyl group, preferably the methyl group, or by a C.sub.1 -C.sub.4 alkoxy group, preferably the methoxy group, or by a hydroxy group or by a trifluoromethyl group or a phenyl group substituted simultaneously by 1 to 3 halogen atoms and by 1 or 2 methyl groupings; R.sub.2 represents hydrogen or a C.sub.1 -C.sub.4 alkyl group, R.sub.3 represents an alkylamino group or a heterocyclic group, Application: Drugs for treatment of notably senile dementia.
Antihypertensive thiadiazoles. 1. Synthesis of some 2-aryl-5-hydrazino-1,3,4-thiadiazoles with vasodilator activity
作者:Stephen Turner、Malcolm Myers、Brian Gadie、Anthony J. Nelson、Robin Pape、John F. Saville、John C. Doxey、Timothy L. Berridge
DOI:10.1021/jm00400a003
日期:1988.5
with a 2-substituted phenyl ring had higher activity than their 3- or 4-substituted counterparts or those containing heteroaryl groups. The 2-methylphenyl and 2-ethylphenyl derivatives 7 and 18 were the most potent members of the series. Preliminary studies indicated that the hypotensive action of these compounds was due to a direct relaxant effect on vascular smooth muscle.