This invention relates to novel mono- and bisquaternary ammonium derivatives of 5a-androstanes having the formula:
wherein:
R, = H or alkyl (1-4 C);
R2 and R3 each are alkyl (1-4 C) or form together with the N-atom a piperidino, pyrrolidino or morpholino group;
R4 = 0 or H(βOR5) and
R5 = H or acyl derived from an organic carboxylic acid having 1-18, preferably 1-6 carbon atoms; the quaternarising group being a saturated or unsaturated aliphatic hydrocarbon group having 1-4 carbon atoms the anion being halide; and acid addition salts of the monoquaternary compounds; and to pharmaceutical preparations containing one or more of said androstane compounds as active constituent.
The compounds according to the invention are non-depolarising neuromuscular blocking agents having very quick onset and recovery characteristics, a short duration of action and a favourable dissociation between muscle blocking and vagal blocking effects.
                            本发明涉及具有以下式子的 5a 雄烷的新型单季
铵和双季
铵衍
生物:
其中
R,= H或烷基(1-4 C);
R2和R3各自为烷基(1-4 C)或与N原子一起形成
哌啶基、
吡咯烷基或吗啉基;
R4 = 0 或 H(βOR5)和
R5 = H 或源自具有 1-18 个碳原子,最好是 1-6 个碳原子的有机
羧酸的酰基;季
铵化基团为具有 1-4 个碳原子的饱和或不饱和脂肪族烃基,阴离子为卤化物;以及单季化合物的酸加成盐;以及含有一种或多种上述
雄甾烷化合物作为活性成分的药物制剂。
本发明的化合物是非去极化神经肌肉阻断剂,具有起效快、恢复快、作用时间短以及肌肉阻断和迷走神经阻断效应之间的良好分离特性。