申请人:Massachusetts General Hospital
公开号:US04235906A1
公开(公告)日:1980-11-25
Intermediate-duration reversible neuromuscular blocking agents of the formula (I) ##STR1## where B and C are preferably para or may be meta and are each ##STR2## where W is CH.sub.2 or most preferably CH.dbd.CH R.sub.1, R.sub.2, R.sub.3 and R.sub.4 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 ##STR3## 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, most preferably 2 or 3 provided that at least one of R.sub.1 to R.sub.4 is lower alkoxy and most preferably where R.sub.1 and R.sub.4 is hydrogen and R.sub.2 and R.sub.3 are methoxy and X is a pharmaceutically acceptable anion. The neuromuscular blocking agents of formula I are useful for administration to a patient to cause skeletal muscle relaxation during surgery and are normally administered intravenously in a pharmaceutically acceptable carrier.
公式(I)的中等持续性可逆神经肌肉松弛剂为:##STR1## 其中B和C最好是对位的,或者可以是间位的,它们各自为:##STR2## 其中W是CH.sub.2或最好是CH.dbd.CH,R.sub.1、R.sub.2、R.sub.3和R.sub.4相同或不同,它们各自为氢或1到4个碳原子的低级烷氧基,最好是甲氧基,Y是1到4个碳原子的低级烷基,最好是甲基,Z是氢、1到4个碳原子的低级烷基、环戊基、环己基、苄基或:##STR3## 其中ALKYL有1到4个碳原子,最好是O-ALKYL位于2、3、4或5位,例如4-甲氧基苄基,最好是3,4-二甲氧基苄基或3,4,5-三甲氧基苄基,n为2、3或4,最好是2或3,但至少有一个R.sub.1到R.sub.4为低级烷氧基,最好是R.sub.1和R.sub.4为氢,R.sub.2和R.sub.3为甲氧基,X为药用可接受的阴离子。公式I的神经肌肉松弛剂可用于给患者注射,以在手术期间引起骨骼肌松弛,通常以药用可接受的载体静脉注射。