申请人:Nissan Chemical Industries, Ltd.
公开号:US05919806A1
公开(公告)日:1999-07-06
Disclosed are cardiotonic medicines containing, as the active ingredient, at least one of compounds of formula (I) and their pharmacologically acceptable salts when they form salts. ##STR1## wherein X.sup.1 and X.sup.2 do not exist or represents an oxygen atom; A represents OH or a C.sub.1 -C.sub.4 acyloxy group; B represents a hydrogen atom or may form a chemical bond along with A; X is an oxygen atom, nitrogen, sulfur, etc.; R.sup.1 and R.sup.2 each represents a hydrogen atom, a C.sub.1 -C.sub.4 alkyl group, etc.; R.sup.3 and R.sup.4 each represents a hydrogen atom, a C.sub.1 -C.sub.4 alkyl group, etc., or they may together form a 1,4-butylene or 1,5-pentylene group. The compounds have a strong activity of reinforcing the contraction of cardiac muscles and a strong activity of reducing the rate of heart beats. As they are not toxic, they are useful as cardiotonic medicines.
本公开涉及含有心力衰竭药物,其活性成分至少包含化合物(I)及其在形成盐时的药理学上可接受的盐。其中X.sup.1和X.sup.2不存在或代表一个氧原子;A代表OH或C.sub.1-C.sub.4酰氧基团;B代表氢原子或与A一起形成化学键;X代表氧原子、氮、硫等;R.sup.1和R.sup.2各代表氢原子、C.sub.1-C.sub.4烷基等;R.sup.3和R.sup.4各代表氢原子、C.sub.1-C.sub.4烷基等,或它们共同形成1,4-丁二烯或1,5-戊二烯基团。这些化合物具有加强心肌收缩的强活性和降低心率的强活性。由于它们不具有毒性,因此它们作为心力衰竭药物是有用的。