Synthesis and cardiotonic activity of a series of substituted 4-alkyl-2(1H)-quinazolinones
作者:Victor T. Bandurco、Charles F. Schwender、Stanley C. Bell、Donald W. Combs、Ramesh M. Kanojia、Seymour D. Levine、Dennis M. Mulvey、Mary A. Appollina、Marianne S. Reed
DOI:10.1021/jm00391a026
日期:1987.8
The synthesis, cardiac fraction III cyclic nucleotide phosphodiesterase (PDE-III) inhibition, and positive inotropic activity of a series of 2(1H)-quinazolinones are reported. A general synthesis of the series involved the cyclization of 2-aminoacetophenones with potassium cyanate in acetic acid. Modifications at the 4-position of the quinazoline nucleus were best achieved by formation of the intermediate
Synthesis of the cardiotonic bemarinone, 5,6-dimethoxy-4-methyl-2(1<i>H</i>)-quinazolinone, utilizing a directed metalation approach
作者:Richard A. Conley、Donald L. Barton、Stephen M. Stefanick、Margaret M. Lam、Gregory C. Lindabery、Charles F. Kasulanis、Sergio Cesco-Cancian、Stephen Currey、Arthur C. Fabian、Seymour D. Levine
DOI:10.1002/jhet.5570320312
日期:1995.5
the synthesis of bemarinone, 5,6-dimethoxy-4-methyl-2(1H)-quinazolinone, were explored with the most successful being a directed metalation route. Details of the lithiation and the subsequent reaction with electrophiles of 3′,4′-dimethoxy-2,2-dimethylpropioanilide and other derivatives of 3,4-dimethoxyaniline are given.
The synthesis of substituted quinazolinones is described. The novel quinazolinones are renal vasodilators and thereby increase renal blood flow, and are useful as cardiovascular agents.
Targetable diagnostic and/or therapeutically active agents, e.g. ultrasound contrast agents, comprising a suspension in an aqueous carrier liquid of a reporter comprising gas-containing or gas-generating material, said agent being capable of forming at least two types of binding pairs with a target.