Synthesis, characterization and antioxidant activity of angiotensin converting enzyme inhibitors
作者:Bhaskar J. Bhuyan、Govindasamy Mugesh
DOI:10.1039/c0ob00823k
日期:——
Angiotensin converting enzyme (ACE) catalyzes the conversion of angiotensin I (Ang I) to angiotensin II (Ang II). ACE also cleaves the terminal dipeptide of vasodilating hormone bradykinin (a nonapeptide) to inactivate this hormone. Therefore, inhibition of ACE is generally used as one of the methods for the treatment of hypertension. ‘Oxidative stress’ is another disease state caused by an imbalance in the production of oxidants and antioxidants. A number of studies suggest that hypertension and oxidative stress are interdependent. Therefore, ACE inhibitors having antioxidant property are considered beneficial for the treatment of hypertension. As selenium compounds are known to exhibit better antioxidant behavior than their sulfur analogues, we have synthesized a number of selenium analogues of captopril, an ACE inhibitor used as an antihypertensive drug. The selenium analogues of captopril not only inhibit ACE activity but also effectively scavenge peroxynitrite, a strong oxidant found in vivo.
血管紧张素转换酶(ACE)催化血管紧张素 I(Ang I)转化为血管紧张素 II(Ang II)。血管紧张素转换酶还能裂解血管扩张激素缓激肽(一种非肽)的末端二肽,使这种激素失活。因此,抑制 ACE 通常是治疗高血压的方法之一。氧化应激 "是另一种由氧化剂和抗氧化剂产生失衡引起的疾病状态。许多研究表明,高血压和氧化应激相互依存。因此,具有抗氧化特性的 ACE 抑制剂被认为有利于治疗高血压。众所周知,硒化合物比其硫类似物具有更好的抗氧化性,因此我们合成了一些卡托普利的硒类似物,卡托普利是一种用作降压药的 ACE 抑制剂。卡托普利的硒类似物不仅能抑制 ACE 活性,还能有效清除过氧化亚硝酸盐,这是一种在体内发现的强氧化剂。