Compounds of formula (I):
(in which: R' is hydrogen or alkyl; R2 is a variety of groups or atoms; R3 is optionally substituted hydroxy or -(NH)n-NR5R6, where R' and R6 are a variety of groups or atoms, preferably alkyl substituted by heterocyclic, and n is 0 or 1; Q is oxygen or sulfur; and A is a C1-C6 alkylene group) have valuable cardiotonic activity and may be used for the treatment of cardiac disorders. They may be prepared from corresponding compounds containing a benzene ring with a group -QH at the 1-position and a group -CO-CHR1-NH-COOR7 at the 4-position by ring closure and introduction of the group of formula -A-CO-R3 in any order.
式(I)化合物:(其中: R' 是氢或烷基;R2 是各种基团或原子;R3 是任选取代的羟基或-(NH)n-NR5R6,其中 R' 和 R6 是各种基团或原子,最好是被杂环取代的烷基,n 是 0 或 1;Q 是氧或
硫;A 是 C1-C6 亚烷基)具有宝贵的强心活性,可用于治疗心脏疾病。 它们可以通过闭环和以任意顺序引入式-A-CO-R3 的基团,从含有苯环的相应化合物制备而成,苯环的 1 位上有一个基团-QH,4 位上有一个基团-CO-CHR1-NH-COOR7。