申请人:MITSUBISHI KASEI CORPORATION
公开号:EP0258435A1
公开(公告)日:1988-03-09
Pyridazinone derivatives of general formula (I),
R1, R2, and R3 each represents hydrogen, hydroxy or alkoxy containing up to 5 carbon atoms, or two of them may be bound to each other to form-O-CH2-O-or-O-CH2-CH2-O-, R4 represents an alkyl group, n represents an integer of 0 to 4, and dotted line represents a single or double bond) or salts thereof are useful as cardiacs, and have both vasodilating and hypotensive effects,
通式(I)的哒嗪酮衍生物(R1、R2 和 R3 分别代表氢、羟基或含有不超过 5 个碳原子的烷氧基,或其中两个可以相互结合形成-O-CH2-O-或-O-CH2-CH2-O-,R4 代表烷基,n 代表 0 至 4 的整数,虚线代表单键或双键)或其盐可用作强心剂,具有扩张血管和降血压的作用、