Angiotensin-converting enzyme inhibitors: new orally active 1,4-thiazepine-2,5-diones, 1,4-thiazine-2,5-diones, and 1,4-benzothiazepine-2,5-diones possessing antihypertensive activity
作者:Jerry W. Skiles、John T. Suh、Bruce E. Williams、Paul R. Menard、Jeffrey N. Barton、Bernard Loev、Howard Jones、Edward S. Neiss、Alfred Schwab
DOI:10.1021/jm00155a032
日期:1986.5
most active thiazines in rats, po, were 42 and 45. Of the benzothiazepines studied, 22a was the most active in inhibiting ACE in the conscious normotensive rat, ID50 = 0.15 mg/kg, po. The acute antihypertensive effects of oral administration of a number of these compounds on mean arterial pressure and heart rate were studied in spontaneously hypertensive rats (SHR) maintained on a sodium-deficient diet
一系列1,4-噻嗪-2,5-二酮,1,4-噻嗪-2,5-二酮和1,4-苯并硫氮杂-2,5-二酮的制备及其抑菌活性检查了体内和体外的血管紧张素转换酶(ACE)。这些化合物被假定为前药,因为它们在与大鼠血浆一起温育或经0.1 N HCl水溶液或磷酸盐缓冲液(pH 7.4)处理时会发生快速的开环反应,以产生相应的无生物活性的SH化合物。噻嗪类23-25和30在向大鼠口服给药时是ACE的有效抑制剂,其效力与卡托普利(1)相当。大鼠中最活跃的噻嗪类化合物分别为42和45。在所研究的苯并硫氮平中,22a在有意识的正常血压大鼠中抑制ACE的活性最高,ID50 = 0.15 mg / kg,po。
New sulfhydryl compounds with potent antihypertensive activities.
作者:ITARU MITA、JUNICHI IWAO、MASAYUKI OYA、TAKEHISA CHIBA、TADASHI ISO
DOI:10.1248/cpb.26.1333
日期:——
(4R)-3-(Mercaptoacyl)-4-thiazolidinecarboxylic acids (III) were synthesized and their inhibitory activities against angiotensin-converting enzyme (ACE) were examined in vitro and in vivo. (4R)-3-[(2S)-3-Mercapto-2-methylpropanoyl]-4-thiazolidinecarboxylic acid (4a) was the most potent orally active inhibitor of ACE among the derivatives and its activity was almost same as that of (2S)-1-[(2S)-3-mercapto-2-methylpropanoyl] proline (8).
The synthesis and antihypertensive activity of a new series of N-(mercaptoacyl)-thiazolidinecarboxylic acids (VIIa-d) are described. Antihypertensive activity was evaluated in terms of angiotensin I-converting enzyme (ACE) inhibitory activity. The activities of these compounds were compared with that of (2S)-1-[(2S)-3-mercapto-2-methylpropanoyl] proline, SQ 14225, and many of them were found to be relatively potent inhibitors of ACE. The most potent was (4R)-2-(2-hydroxyphenyl)-3-(3-mercaptopropanoyl)-4-thiazolidinecarboxylic acid (62). Structure-activity relationships among the thiazolidines and some related compounds are discussed.