申请人:Japan Tobacco Inc.
公开号:US05719155A1
公开(公告)日:1998-02-17
Chroman derivatives of the formula \x9bI! ##STR1## wherein R.sup.1 is a cyano, a nitro, a trihalomethyl, a trihalomethoxy or a halogen atom; R.sup.2 is a lower alkoxyalkyl, an aryloxyalkyl or a dialkoxyalkyl; R.sup.3 is a lower alkoxyalkyl or an aryloxyalkyl; R.sup.4 is a hydroxy, a formyloxy or a lower alkanoyloxy; X is N--H, an N--optionally substituted lower alkyl, an oxygen atom, a sulfur atom or a single bond; and Y is an optionally substituted aromatic ring residue or an optionally substituted heterocyclic residue, pharmaceutically acceptable salts thereof and pharmaceutical use thereof. The compound of the present invention and pharmaceutically acceptable salts thereof have selective and excellent coronary vasodilating action and extremely weak hypotensive action. Accordingly, it is possible to selectively increase the coronary blood flow without causing a sudden hypotention causative of tachycardia which has a detrimental effect on the heart, and they are useful as a coronary vasodilator, in particular, an agent for the prophylaxis and treatment of cardiovascular disorders such as angina pectoris and heart failure.
本发明的化合物及其中医药学上可接受的盐具有选择性和优秀的心脏血管扩张作用,而且具有极其微弱的降压作用。因此,可以在不引起心动过速导致的有害心脏影响的突发性低血压的情况下,选择性地增加冠状动脉血流,并且它们作为心脏血管扩张剂特别有用,尤其是用于预防和治疗心绞痛和心力衰竭等心血管疾病的药物。