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
报告了一系列2(1H)-喹唑啉酮的合成,心脏分数III环状核苷酸磷酸二酯酶(PDE-III)抑制和正性肌力活性。该系列的一般合成涉及2-氨基苯乙酮与氰酸钾在乙酸中的环化。通过由取代的异氰酸苯酯和适当的羧酰胺形成中间体N1-酰基-N3-苯基脲,可以最佳地实现喹唑啉核4位的修饰。PPA用于接近喹唑啉产物。通常,该系列的SAR与先前针对PDE-III抑制而发表的五点模型相似。该系列中活性最高的类似物是5,6-二甲氧基-4-甲基-2(1H)-喹唑啉酮(1)(ORF 16600),其氨力农的静脉内效力约为其两倍。