Inhibition of aldose reductases from rabbit lens by oxazole derivatives.
作者:TSUYOSHI TANIMOTO、HIDEO FUKUDA、JIRO KAWAMURA、MASUMI NAKAO、UTAKO SHIMADA、AKIRA YAMADA、CHIAKI TANAKA
DOI:10.1248/cpb.32.1032
日期:——
Twenty kinds of oxazole derivatives having various substituents at the C-2 and C-5 positions were synthesized and tested in vitro for inhibition of rabbit lens aldose reductase (Ia and Ib), the enzyme that initiates cataract formation in diabetes. Compounds possessing bulky groups at C-2 and C-5 of the oxazole skeleton were found to be potent inhibitors. Benzyl 5-phenyl-2-oxazolecarbamate (12) inhibited aldose reductases Ia and Ib by 50% at about 15μM. N-Phenyl-N'-(5-phenyl-2-oxazolyl) urea also exhibited inhibitory activity comparable to that of compound 12. The structure-inhibitory activity relationships are discussed.
合成了二十种在C-2和C-5位置具有各种取代基的噁唑衍生物,并在体外测试了它们对兔晶状体醇糖还原酶(Ia和Ib)的抑制作用,醇糖还原酶是引发糖尿病白内障形成的酶。研究发现,在噁唑骨架的C-2和C-5位置具有大体积取代基的化合物是有效的抑制剂。苄基5-苯基-2-噁唑氨基甲酸酯(12)在约15μM的浓度下对醇糖还原酶Ia和Ib的抑制率达到50%。N-苯基-N'-(5-苯基-2-噁唑基)脲的抑制活性也与化合物12相当。讨论了结构与抑制活性之间的关系。