Synthesis and Structure-Activity Relationships of Substituted 2-((2-Imidazolylsulfinyl)methyl)anilines as a New Class of Gastric H+/K+ -ATPase Inhibitors. II.
作者:Tomio YAMAKAWA、Hitoshi MATSUKURA、Yutaka NOMURA、Mitsuko YOSHIOKA、Mitsuo MASAKI、Hiroyuki HARADA、Susumu OKABE
DOI:10.1248/cpb.40.675
日期:——
2-[(2-imidazolylsulfinyl)methyl]anilines (2) having various substituents on their imidazole and aniline rings was synthesized and examined for their H+/K(+)-ATPase (adenosine triphosphatase) inhibitory effects and antisecretory activity against histamine-stimulated gastric acid secretions in Heidenhain pouch dogs. Although substitutions on the imidazole ring did not enhance biological activity, substitutions
合成了一系列在咪唑和苯胺环上具有各种取代基的2-[(2-咪唑基亚磺酰基)甲基]苯胺(2),并研究了其对H + / K(+)-ATPase(腺苷三磷酸酶)的抑制作用和对分泌的抗分泌活性组胺刺激海登海袋犬的胃酸分泌。尽管在咪唑环上的取代不能增强生物活性,但是通过给电子取代基在苯胺环上的取代可以有效地增强酶的抑制活性,并且在口服后对组胺刺激的胃酸分泌也显示出抑制作用。特别是二甲基(2u--w)和三甲基(2ac)衍生物的体外活性约为奥美拉唑的十倍。另外,4-甲基(2k),4-甲氧基-5-甲基(2y)和3,5-二甲基-4-甲氧基(2ab)衍生物在6 mg / kg口服后显示出超过80%的有效抗分泌作用。尽管这些苯胺衍生物在水溶液中具有相对较低的稳定性,但是用N-(2-甲氧基乙基)基团代替苯胺氮原子上的异丁基基团可以提高稳定性。