Reduced Amide Bond Peptidomimetics. (4<i>S</i>)-<i>N</i>-(4-Amino-5-[aminoalkyl]aminopentyl)-<i>N</i>‘-nitroguanidines, Potent and Highly Selective Inhibitors of Neuronal Nitric Oxide Synthase
作者:Jung-Mi Hah、Linda J. Roman、Pavel Martásek、Richard B. Silverman
DOI:10.1021/jm0101491
日期:2001.8.1
The most potent nNOS inhibitor among these compounds is (4S)-N-(4-amino-5-[aminoethyl]aminopentyl)-N'-nitroguanidine (7) (K(i) = 120 nM), which also shows the highest selectivity over eNOS (greater than 2500-fold) and 320-fold selectivity over iNOS. The reduced amide bond is an excellent surrogate of the amide bond, and it will facilitate the design of new potent and selective inhibitors of nNOS.
一氧化氮合酶(NOS)的同工型的选择性抑制可能在治疗某些因一氧化氮过量产生而引起的疾病中有用。最近,我们报道了含硝基精氨酸的二肽酰胺(Huang,H; Martasek,P .; Roman,LJ; Masters,BSS; Silverman,RBJ Med。Chem。1999,42,3147.)和一些拟肽类似物(Huang,H; Martasek,P .; Roman,LJ; Silverman,RBJ Med Chem。2000,43,2938.)作为神经元NOS(nNOS)的有效和选择性抑制剂。在此,合成还原的酰胺键伪二肽类似物并评估其活性。酰胺键中羰基的缺失保留或提高了nNOS的效力。重要的是,nNOS相对于eNOS(内皮型NOS)的选择性,和iNOS(诱导型NOS)在这些系列中大大增加。在这些化合物中,最有效的nNOS抑制剂是(4S)-N-(4-氨基-5- [氨基乙基]氨基戊基)-N'-硝基胍(7)(K(i)=