血管扩张药是治疗动脉高血压的重要药物之一,它能降低心脏前负荷,实验证明此类药物尚能在心力衰竭的治疗中用作强心甙和利尿剂的辅助药物。在高血压的血管舒张疗法中,常用的药物是肼肽嗪和哌唑嗪,但因其药效短,副作用大,限制了其应用。因而需要开发一种既 Vasodilator is one of the important drugs for the treatment of arterial hypertension, which can reduce the pre-cardiac load. Experiments show that these drugs can still be used as auxiliary drugs of cardiac glycosides and diuretics in the treatment of heart failure. In the hypertensive vasodilatation therapy, the commonly used drugs are hydrazine and prazosin, but because of its short efficacy, side effects, limiting its application. So need to develop a both