Angiotensin-converting enzyme inhibitors. 2. Perhydroazepin-2-one derivatives
作者:Hiroaki Yanagisawa、Sadao Ishihara、Akiko Ando、Takuro Kanazaki、Shuichi Miyamoto、Hiroyuki Koike、Yasuteru Iijima、Kiyoshi Oizumi、Yoichi Matsushita、Tadashi Hata
DOI:10.1021/jm00397a027
日期:1988.2
alpha-[(3S)-3-[[(S)-1-(Ethoxycarbonyl)-3-phenylpropyl]amino]-2-oxo-6 or 7-phenylperhydroazepin-1-yl]acetic acids (monoester monoacids) and their dicarboxylic acids were synthesized, and their angiotensin-converting enzyme (ACE) inhibitory activities were evaluated. The dicarboxylic acids having phenyl substituents at the 6R, 6S, and 7S positions on the azepinone ring showed potent inhibition in vitro. The corresponding monoester monoacids, when administered orally, suppressed the pressor response to angiotensin I administered intravenously. The monoester monoacids having the phenyl substituent at the 6-position showed a longer duration of action than one having the substituent at the 7-position. The structure-activity relationship was studied on the basis of the conformational energy calculation.