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    • 10. 发明申请
    • PYRIDAZINONE DERIVATIVES
    • 吡咯烷酮衍生物
    • WO1989007594A1
    • 1989-08-24
    • PCT/JP1989000127
    • 1989-02-09
    • NIPPON SODA CO., LTD.KUSASE, YouMURAKATA, MasatoshiMOCHIZUKI, NobuoTAKEBAYASHI, Michinori
    • NIPPON SODA CO., LTD.
    • C07D237/04
    • C07D491/04C07D237/04C07D237/14C07D237/36
    • The present invention relates to a compound having formula (I) which has an excellent cardiotonic action. In said formula, Y represents C1-4 alkylene which may be substituted by C1-18 alkyl, C1-5 alkoxy, C1-5 alkylthio C1-5 alkyl, C1-5 alkoxycarbonyl or benzyl, or (a) (where each r and r represents hydrogen, C1-18 alkyl, C1-5 alkoxy, C1-5 alkylthio C1-5 alkyl, C1-5 alkoxycarbonyl or benzyl); and R1 represents hydrogen, C1-5 alkyl which may be substituted by C1-5 alkoxy, acetyl or C2-5 alkenyl; and R2 represents hydrogen or methyl; and each R3 and R4 represents hydrogen, halogen, hydroxy, C1-5 alkyl, or C1-5 alkoxy; and R5 represents hydrogen or C1-5 alkyl which may be substituted by hydroxy; and R4 and R5 may form ring by joining each other; and -- represents single or double bond.
    • 本发明涉及具有优异强心作用的式(I)化合物。 在所述式中,Y表示可被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烷氧羰基或苄基取代的C 1-4亚烷基,或(a)(其中每个r < 1&gt;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; 和 - 表示单键或双键。