申请人:Schering, Aktiengesellschaft
公开号:US04457927A1
公开(公告)日:1984-07-03
Pyrido[2,1-b]quinazolinones of the formula ##STR1## wherein X is cyano, hydroxyamidocarbonyl, carbamoyl, 5-tetrazolyl, carboxy, carboxy in the form of a salt thereof with a physiologically compatible base, carboxy esterified with a physiologically acceptable alcohol or carboxy amidated with a physiologically acceptable amine; R.sub.1 is hydrogen or methyl; and R.sub.2 through R.sub.5 are independently each hydrogen, halogen, alkyl of 1-4 carbon atoms, trifluoromethyl, carboxy, thiocyano, methylthio, methylsulfinyl, methylsulfonyl, methylsulfonimidoyl or methylsulfonamido with the proviso that two or three of the groups R.sub.2 through R.sub.5 are hydrogen; or a salt thereof with a physiologically acceptable acid or base; possess valuable pharmacological properties.
Pyrido[2,1-b]quinazolinones的化学式为##STR1##其中X为氰基、羟基甲酰氨基甲酸酯、氨基甲酰、5-四唑基、羧基、以生理兼容碱盐形式存在的羧基、与生理兼容醇酯化的羧基或与生理兼容胺酰化的羧基;R.sub.1为氢或甲基;R.sub.2至R.sub.5分别独立地为氢、卤素、1-4碳原子的烷基、三氟甲基、羧基、硫氰基、甲硫基、亚硫基甲基、砜基甲基、磺基甲基亚氧基或磺基甲基酰胺基,但要求R.sub.2至R.sub.5中的两个或三个基团为氢;或者与生理兼容酸或碱形成的盐;具有有价值的药理特性。