Synthesis and preliminary pharmacological evaluation of asymmetric chloroquine analogs
作者:Donald T. Witiak、David A. Grattan、Richard J. Heaslip、Ralf G. Rahwan
DOI:10.1021/jm00138a014
日期:1981.6
Asymmetric chloroquine analogues (1-4) were prepared of known absolute configuration in order to assess stereochemical influences on selected biological activities. Since chloroquine has been shown to possess spasmolytic properties, analogues 1-4 were tested for similar pharmacological effects on smooth-muscle contraction. The (S)- and (R)-chlorochloroquine enantiomers (1 and 2, respectively) were
制备具有已知绝对构型的不对称氯喹类似物(1-4),以评估立体化学对所选生物活性的影响。由于已显示氯喹具有解痉性质,因此对类似物1-4进行了对平滑肌收缩的类似药理作用的测试。用KCl-或(K)-或(S)-和(R)-氯氯喹对映体(分别为1和2)比亲脂性较低的(S)-和(R)-羟基氯喹(分别为3和4)具有更强的解痉作用。乙酰胆碱诱导的离体小鼠回肠收缩。提出了一种针对氯喹类似物的膜稳定作用机理,因为细胞毒性和钙拮抗作用都不在这些化合物的解痉作用中起作用。尽管化合物1-4也抑制了PGF2α诱导的回肠收缩,但是1比2显着更有效。后者依次与3和4等价。有人提议1对回肠中的PGF2α受体具有立体选择性亲和力。可以进一步利用这一观察结果,以通过分子操作获得更具选择性的生物活性。