2,4-Dihydro-5-((substituted)phenyl)-4,4-disubstituted-3H-pyrazol-3-ones, 2,4-dihydro-5-((substituted)phenyl)-4, 4-disubstituted-3H-pyrazol-3-thiones, and a process for producing the same
申请人:WARNER-LAMBERT COMPANY
公开号:EP0126651A2
公开(公告)日:1984-11-28
2,4-Dihydro-5-[(substituted]phenyl]-4,4-disubstituted--3H-pyrazol-3-one and -3-thione compounds suitable for use as cardiotonic and antihypertensive agents are disclosed. A pharmaceutical composition and a process for the preparation of the said compounds are also described.
Cardiotonic agents. 2. Synthesis and structure-activity relationships of 4,5-dihydro-6-[4-(H-imidazol-1-yl)phenyl]-3(2H)-pyridazinones: a new class of positive inotropic agents
作者:Ila Sircar、Bradley L. Duell、George Bobowski、James A. Bristol、Dale B. Evans
DOI:10.1021/jm00148a006
日期:1985.10
substituent at the 5-position of 1 (CI-914) produced the most potent compound in this series (11, CI-930). Compound 1 is more potent than amrinone whereas compound 11 is more potent than milrinone. The inotropic effects of 1 and 11 are not mediated via stimulation of beta-adrenergic receptors. Selective inhibition of cardiac phosphodiesterase fraction III represents the principal component of the positive