Novel calcium antagonists. Synthesis and structure-activity relationship studies of benzothiazoline derivatives
作者:Koji Yamamoto、Masanobu Fujita、Keizo Tabashi、Yoichi Kawashima、Eishin Kato、Masayuki Oya、Tadashi Iso、Junichi Iwao
DOI:10.1021/jm00400a006
日期:1988.5
A series of novel compounds having a benzothiazoline skeleton was studied for their structure-activity relationship (SAR) with respect to Ca2+ antagonistic activity. As test compounds, analogues of 3-acyl-2-arylbenzothiazolines (3) were synthesized. Benzothiazoline derivatives (3) exerted higher Ca2+ antagonistic activity than the corresponding thiazolidine derivatives (2). Effects of substituents
研究了一系列具有苯并噻唑啉骨架的新型化合物的相对于Ca2 +拮抗活性的结构活性关系(SAR)。作为测试化合物,合成了3-酰基-2-芳基苯并噻唑啉的类似物(3)。苯并噻唑啉衍生物(3)比相应的噻唑烷衍生物(2)具有更高的Ca2 +拮抗活性。研究了取代基R1-R4,氨基烷氧基和R2的取代位置以及亚甲基链的长度对生物活性的影响。化合物4 [3-乙酰基-2- [5-甲氧基-2- [4- [N-甲基-N-(3,4,5-三甲氧基苯乙基)氨基]丁氧基]苯基]苯并噻唑啉盐酸盐]显示出有效的Ca2 +拮抗活性体外对Langendorff灌注兔心脏中Na +向内快速通道和Ca2 +向内缓慢通道的双重抑制。