Substituted 3-(Phenylsulfonyl)-1-phenylimidazolidine-2,4-dione Derivatives as Novel Nonpeptide Inhibitors of Human Heart Chymase
作者:Shinjiro Niwata、Harukazu Fukami、Motoo Sumida、Akiko Ito、Saki Kakutani、Masayuki Saitoh、Kenji Suzuki、Masahiro Imoto、Hiroshi Shibata、Seiichi Imajo、Yoshinobu Kiso、Takaharu Tanaka、Hiroshi Nakazato、Takafumi Ishihara、Shinji Takai、Daisuke Yamamoto、Naotaka Shiota、Mizuo Miyazaki、Hideki Okunishi、Akio Kinoshita、Hidenori Urata、Kikuo Arakawa
DOI:10.1021/jm960793t
日期:1997.7.1
A series of 3-(phenylsulfonyl)-1-phenylimidazolidine-2,4-dione derivatives have been synthesized and evaluated for their ability to selectively inhibit human heart chymase. The structure-activity relationship studies on these compounds gave the following results. The 1-phenyl moiety participates in a hydrophobic interaction where an optimum size is required. At this position, 3,4-dimethylphenyl is the best moiety for inhibiting chymase and showed high selectivity compared with chymotrypsin and cathepsin G. A 3-phenylsulfonyl moiety substituted with hydrogen-bond accepters such as nitrile and methoxycarbonyl enhances its activity. Molecular-modeling studies on the interaction of 3-[(4-chlorophenyl)sulfonyl]-1-(4-chlorophenyl)imidazolidine-2,4-dione (29) with the active site of human heart chymase suggested that the 1-phenyl moiety interacts with the hydrophobic P-1 pocket, the 3-phenylsulfonyl moiety resides in the S-1'-S-2' subsites, and the 4-carbonyl of the imidazolidine ring and sulfonyl group interact with the oxyanion hole and the His-45 side chain of chymase, respectively. The complex model is consistent with the structure-activity relationships.