Pyridazinone derivatives
    2.
    发明授权
    Pyridazinone derivatives 失效
    吡咯烷酮衍生物

    公开(公告)号:US5110925A

    公开(公告)日:1992-05-05

    申请号:US427123

    申请日:1989-10-04

    摘要: The present invention relates to a compound having the formula below which have an excellent cardiotonic action: ##STR1## wherein Y represents C.sub.1-4 alkylene which may be substituted by C.sub.1-18 alkyl, C.sub.1-5 alkoxy, C.sub.1-5 alkylthio C.sub.1-5 alkyl, C.sub.1-5 alkoxycarbonyl or benzyl, or ##STR2## where each r.sup.1 and r.sup.2 represents hydrogen, C.sub.1-18 alkyl, C.sub.1-5 alkoxy, C.sub.1-5 alkylthio C.sub.1-5 alkyl, C.sub.1-5 alkoxycarbonyl or benzyl); andR.sub.1 represents hydrogen, C.sub.1-5 alkyl which may be substituted by C.sub.1-5 alkoxy, acetyl or C.sub.2-5 alkenyl; andR.sub.2 represents hydrogen or methyl; andeach R.sub.3 and R.sub.4 represents hydrogen, halogen, hydroxy, C.sub.1-5 alkyl, or C.sub.1-5 alkoxy; andR.sub.5 represents hydrogen or C.sub.1-5 alkyl which may be substituted by hydroxy; andR.sub.4 and R.sub.5 may form ring by joining each other; and represents single or double bond.

    摘要翻译: PCT No.PCT / JP89 / 00127 Sec。 371日期:1989年10月4日 102(e)日期1989年10月4日PCT 1989年2月9日PCT PCT。 出版物WO89 / 07594 1989年8月24日。具有下式的化合物本发明涉及具有优异强心作用的下式的化合物:其中Y代表可被C 1-18烷基取代的C 1-4亚烷基,C 1-5烷氧基, C 1-5烷硫基C 1-5烷基,C 1-5烷氧基羰基或苄基,或其中每个r 1和r 2表示氢,C 1-18烷基,C 1-5烷氧基,C 1-5烷硫基C 1-5烷基,C 1-5 烷氧基羰基或苄基); 并且R 1表示氢,可被C 1-5烷氧基取代的C 1-5烷基,乙酰基或C 2-5烯基; 并且R 2表示氢或甲基; 并且每个R 3和R 4表示氢,卤素,羟基,C 1-5烷基或C 1-5烷氧基; 并且R 5表示氢或可被羟基取代的C 1-5烷基; R4和R5可以通过相互结合形成环; 并且表示单键或双键。