Carbonic anhydrase activators: amino acyl/dipeptidyl histamine derivatives bind with high affinity to isozymes I, II and IV and act as efficient activators
作者:Claudiu T. Supuran、Andrea Scozzafava
DOI:10.1016/s0968-0896(99)00227-8
日期:1999.12
a series of compounds with the general formula AA-Hst (AA = amino acyl; dipeptidyl). The new derivatives were assayed as activators of three carbonic anhydrase (CA) isozymes, hCA I, hCA II (cytosolic forms) and bCA IV (membrane-bound form). Efficient activation was observed against all three isozymes, but especially against hCA I and bCA IV, with affinities in the nanomolar range for the best compounds
组胺(Hst)与四溴邻苯二甲酸酐反应,并用三苯甲基磺酰氯保护其咪唑部分,然后进行肼解反应,得到N-1-三苯甲基磺酰-组胺,这是一种关键中间体,在其氨基乙基部分被进一步衍生。在咪唑类和氨基部分脱保护后,在碳二亚胺存在下,关键中间体与N-Boc-氨基酸/二肽(Boc-AA)反应,得到了一系列通式为AA-Hst的化合物(AA =氨基酰基;二肽基)。分析了新衍生物作为三种碳酸酐酶(CA)同工酶的激活剂,它们分别是hCA I,hCA II(胞质形式)和bCA IV(膜结合形式)。观察到针对所有三种同工酶的有效活化,尤其是针对hCA I和bCA IV的活化,其最佳化合物的亲和力在纳摩尔范围内。另一方面,hCA II可以被约10-20 nM的亲和力激活。这类新型的CA激活剂可能导致针对CA缺乏综合症(一种骨骼,脑和肾脏的遗传性疾病)的药物/诊断剂的开发。