Isoquinoline derivatives, their preparation and pharmaceutical compositions containing these compounds
申请人:THE MASSACHUSETTS GENERAL HOSPITAL
公开号:EP0010119A1
公开(公告)日:1980-04-30
Intermediate-duration reversible neuromuscular blocking agents of the formula (I)
where B and C are preferably para or may be meta and are each
where W is CH2 or most preferably CH = CH R1, R2, R3 and R4 are the same or different and are each hydrogen or lower alkoxy of 1 to 4 carbon atoms and preferably methoxy, Y is lower alkyl of 1 to 4 carbon atoms and preferably methyl, Z is hydrogen, lower alkyl of 1 to 4 carbon atoms, cyclopentyl, cyclohexyl, benzyl or
where ALKYL has 1 to 4 carbon atoms preferably where the O-ALKYL is at the 2, 3, 4 or 5 positions such as 4-methoxy benzyl and is most preferably 3, 4-dimethoxy benzyl or 3, 4, 5-trimethoxybenzyl, n is 2, 3 or 4, mos preferably 2 or 3 provided that at least one of R1 to R4 is lower alkoxy and most preferably where R1 and R4 is hydrogen and R2 and R3 are methoxy and X is a pharmaceutically acceptable anion.
The neuromuscular blocking agents of formula are useful for administration to a patient to cause skeletal muscle relaxion during surgery and are normally administered intravenously in a pharmaceutically acceptable carrier.
式(I)的中效可逆性神经肌肉阻断剂
其中 B 和 C 优选为对位,也可以是元对位,且分别为
其中 W 是 CH2 或最优选 CH = CH R1、R2、R3 和 R4 相同或不同,各自是氢或 1 至 4 个碳原子的低级烷氧基,优选甲氧基;Y 是 1 至 4 个碳原子的低级烷基,优选甲基;Z 是氢、1 至 4 个碳原子的低级烷基、环戊基、环己基、苄基或
其中 ALKYL 具有 1 至 4 个碳原子,优选 O-ALKYL 位于 2、3、4 或 5 位,如 4-甲氧基苄基,最优选 3、4-二甲氧基苄基或 3、4、5-三甲氧基苄基,n 为 2、3 或 4,最优选 2 或 3,条件是 R1 至 R4 中至少有一个为低级烷氧基,最优选 R1 和 R4 为氢,R2 和 R3 为甲氧基,X 为药学上可接受的阴离子。
式中的神经肌肉阻断剂适用于在手术过程中给病人使用,以引起骨骼肌松弛,通常在药学上可接受的载体中静脉给药。