<i>N</i>-Aryl <i>N</i>‘-Hydroxyguanidines, A New Class of NO-Donors after Selective Oxidation by Nitric Oxide Synthases: Structure−Activity Relationship
作者:Axelle Renodon-Cornière、Sylvie Dijols、Céline Perollier、David Lefevre-Groboillot、Jean-Luc Boucher、Roger Attias、Marie-Agnes Sari、Dennis Stuehr、Daniel Mansuy
DOI:10.1021/jm011006h
日期:2002.2.1
The formation of nitric oxide (NO) was followed during the oxidation of 37 N-hydroxyguanidines or related derivatives, including 18 new N-aryl N'-hydroxyguanidines, by recombinant inducible nitric oxide synthase (NOS II). Several N-aryl N'-hydroxyguanidines bearing a relatively small, electron-donating para subtituent, such as H, F, Cl, CH(3), OH, OCH(3), and NH(2), led to NO formation rates between
通过重组诱导型一氧化氮合酶(NOS II)氧化37个N-羟基胍或相关衍生物(包括18个新的N-芳基N'-羟基胍)的过程中,形成一氧化氮(NO)。几个带有相对较小的给电子对位取代基的N-芳基N'-羟基胍,例如H,F,Cl,CH(3),OH,OCH(3)和NH(2),导致NO的生成速率N(ω)-羟基-L-精氨酸(NOHA)生成的NO的8%至41%。这些反应的特征与先前报道的NOS氧化NOHA的特征非常相似:(i)严格要求NOS含有(6R)-5,6,7,8-四氢-L-生物蝶呤,烟酰胺还原腺嘌呤磷酸二核苷酸和O(2)发生氧化,(ii)以1:1的摩尔比形成NO和相应的尿素,并且(iii)经典的NOS抑制剂(例如N(ω)-硝基-L-精氨酸和S-乙基-异硫氰酸酯)具有很强的抑制作用-硫脲。构效关系研究表明,两个结构因素对于由具有C(三键)NOH功能的化合物形成NO至关重要。第一个是存在单取代的N-羟基胍