Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
1987-8-7
pubmed:abstractText
A series of [4-(substituted-amino)phenyl]pyridazinones and [4-(substituted-methyl)amino]phenyl]pyridazinones was synthesized and evaluated for inotropic activity in vitro and for cardiohemodynamic effects in vivo. Above all, 6-[4-(4-pyridylamino)phenyl]-4,5-dihydro-3(2H)-pyridazinone hydrochloride (4, MCI-154) and 6-[4-(4-pyridylamino)phenyl]-5-methyl-4,5-dihydro-3(2H)-pyridazinone hydrochloride (5) showed extremely potent positive inotropic activity along with vasodilating activity. Regarding dP/dtmax (an indicator for cardiac contractility), ED30's (doses that increased dP/dtmax by 30%) of compounds 4 and 5 were 8.5 +/- 1.9 and 4.4 +/- 0.6 micrograms/kg, respectively, where that of amrinone was 471.9 +/- 94.1 micrograms/kg. Structure-activity relationships of these series are presented, and a plausible model of receptor binding is discussed.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0022-2623
pubmed:author
pubmed:issnType
Print
pubmed:volume
30
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1157-61
pubmed:dateRevised
2003-11-14
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
A novel class of cardiotonics. Synthesis and pharmacological properties of [4-(substituted-amino)phenyl]pyridazinones and related derivatives.
pubmed:publicationType
Journal Article