环轮宁是近年来国内研制成功的新控制性降压药。降压作用迅速可靠,易控可逆,副作用较轻,可以代替进口的三甲硫吩(Trimethaphan,又名阿方那特Arfonad)。现将环轮宁的研究资料介绍如下: 一、理化特性(1,2) 环轮宁是防已科植物地不容(Stephonia epigeae H.S.Lo.)中所含生物碱——轮环芚宁(Cycleanine)经季铵化后制成 Rings is rather successful in recent years developed a new controlled antihypertensive drugs. Antihypertensive effect is rapid and reliable, easy to control reversible, less side effects, can be imported instead of trimethylthiophene (Trimethaphan, also known as Arfonad Arfonad). Now the research data of Cortex Ninh were described as follows: I. Physical and Chemical Properties (1, 2) The Cnn is a kind of alkaloid contained in Stephonia epigeae HSLo. ) Quaternary ammonium made