Benzimidazole derivatives as novel nonpeptide luteinizing hormone-releasing hormone (LHRH) antagonists. Part 2: Benzimidazole-5-sulfonamides
作者:Yingfu Li、Mikayo Kataoka、Miyuki Tatsuta、Kayo Yasoshima、Takeshi Yura、Klaus Urbahns、Atsushi Kiba、Noriyuki Yamamoto、Jang B. Gupta、Kentaro Hashimoto
DOI:10.1016/j.bmcl.2004.10.090
日期:2005.2
substituted benzimidazole 2 has been used as a starting point for further optimization of an LHRH antagonist series. SAR studies revealed that a tert-butyl urea fragment connected through a simple carbon chain would improve activity. Further modification of the benzylsulfonamide moiety led to the discovery of 23 (IC(50): 4.2 nM).
2-环丙基取代的苯并咪唑2已被用作进一步优化LHRH拮抗剂系列的起点。SAR研究表明,通过一条简单的碳链连接的叔丁基脲片段会提高活性。苄基磺酰胺部分的进一步修饰导致发现23(IC(50):4.2 nM)。