In search of a drug to treat sickle cell anemia, several analogues of the diuretic ethacrynic acid (ECA) have been synthesized and found equivalent in antigelling potency to ECA, but they have moderate or little diuretic activity. Structure-activity studies revealed that most of the highly active derivatives contain an acryloyl moiety. The latter functionality reacts covalently with protein sulfhydryl
为了寻找治疗镰状细胞性贫血的药物,已经合成了几种利尿剂
乙炔酸(
ECA)的类似物,并发现其抗胶凝作用与
ECA相当,但是它们具有中等或几乎没有利尿作用。结构活性研究表明,大多数高活性衍
生物都含有
丙烯酰基部分。后者的功能性通过迈克尔加成反应与蛋白质巯基共价反应。缺少
丙烯酰基部分的其他衍
生物显示出明显较低的抗胶凝活性。由于抗凝胶化试验是在厌氧条件下进行的,因此活性暗示了脱氧血红蛋白S聚合的立体
化学抑制作用。从[HbS药物] / [HbS对照]几种化合物(表I)获得的溶解度比值接近具有临床潜力(1.06-1。