Carbonic Anhydrase Activators: High Affinity Isozymes I, II, and IV Activators, Incorporating a β-Alanyl-histidine Scaffold
作者:Andrea Scozzafava、Claudiu T. Supuran
DOI:10.1021/jm010958k
日期:2002.1.1
which some of the new compounds showed affinities in the 1-20 nM range (h = human; b = bovine isozymes), whereas against hCA II, their affinities were in the range of 10-40 nM. Ex vivo experiments showed some of the new activators to strongly enhance cytosolic red cell CA activity after incubation with human erythrocytes. This new class of CA activators might lead to the development of drugs/diagnostic
以组胺和组氨酸为先导分子,设计了一类新型的紧密结合碳酸酐酶(CA)激活剂。通过在碳二亚胺存在下适当衍生化的β-丙氨酸与咪唑/羧基保护的组氨酸的反应合成肌肽(β-Ala-His)衍生物,然后去除各种保护基。上述衍生的β-丙氨酸依次通过将4-氟苯基磺酰脲基氨基酸(fpu-AA)或2-甲苯磺酰脲基氨基酸(ots-AA)与β-Ala偶联而获得。还通过类似策略制备了一些具有通式fpu / ots-AA1-AA2(AA,AA1和AA2代表氨基酰基部分)的结构相关的二肽,并随后用于获得结合了修饰的四肽支架的CA活化剂。事实证明,这里报道的许多新的三/四肽衍生物是三种CA同工酶的有效体外活化剂。检测到对hCA I和bCA IV的活性非常好,其中一些新化合物显示出1-20 nM的亲和力(h =人; b =牛同功酶),而对hCA II的亲和力在为10-40 nM。体外实验显示,与人红细胞孵育后,一些新的激活剂