N-Protected amino acids (Gly, Ala and Phe) were reacted with amino substituted coumarin and quinolinone derivatives, leading to the corresponding N-protected amino acid-coumarin/quinolinone conjugates. The carbonic anhydrase (CA, EC 4.2.1.1) inhibitory activity of the new compounds was assessed against various human (h) isoforms, such as hCA I, hCA II, hCA IV and hCA XII. The quinolinone conjugates were inactive
使受N保护的
氨基酸(Gly,Ala和Phe)与
氨基取代的
香豆素和
喹啉酮衍
生物反应,得到相应的N-保护的
氨基酸-
香豆素/
喹啉酮缀合物。评估了新化合物的
碳酸酐酶(CA,
EC 4.2.1.1)对多种人(h)同工型,例如hCA I,hCA II,hCA IV和hCA XII的抑制活性。
喹啉酮缀合物作为酶
抑制剂无效,而
香豆素不是有效的hCA I / II
抑制剂(KIs> 50μM),但是是亚微摩尔hCA IV和XII
抑制剂,hCA IV的抑制常数介于92 nM和1.19μM之间。 hCA XII为0.11和0.79μM。正如许多其他较早报道的那样,这些
香豆素衍
生物对胞质CA同工型上的膜结合表现出有趣的选择性抑制作用。