Preparation and Biological Activity of 2-(4-(Thiazol-2-yl)phenyl)propionic Acid Derivatives Inhibiting Cyclooxygenase.
作者:Youichiro NAITO、Tomokazu GOTO、Fumihiko AKAHOSHI、Shiniciro ONO、Haruko YOSHITOMI、Tadashi OKANO、Naoki SUGIYAMA、Shunichi ABE、Syuichi HANADA、Mitsuru HIRATA、Masahiro WATANABE、Chikara FUKAYA、Kazumasa YOKOYAMA、Toshio FUJITA
DOI:10.1248/cpb.39.2323
日期:——
A series of 2-[4-(thiazol-2-yl)phenyl]propionic acids substituted at various positions were prepared by the reaction of diethyl 2-methyl-2-(4-thiocarbamoylphenyl)malonates with alpha-bromoaldehyde diethyl acetals or alpha-haloketones followed by hydrolysis of esters. The inhibition of prostaglandin H synthetase (cyclooxygenase) was assayed by use of an enzyme preparation from guinea pig polymorphonuclear
通过使2-甲基-2-(4-硫代氨基甲酰基苯基)丙二酸二乙酯与α-溴醛二乙缩醛或α反应制备一系列在各个位置取代的2- [4-(噻唑-2-基)苯基]丙酸。 -卤代酮,然后酯水解。通过使用来自豚鼠多形核白细胞的酶制剂测定前列腺素H合成酶(环加氧酶)的抑制作用。这些化合物的结构活性关系的研究表明,苯环3位(R1)处的卤素和噻唑环4位(R2)和/或5位(R3)处的甲基被卤素取代是有利的抑制活性。在R2位带有大的烷基或极性官能团的化合物是弱抑制剂。测试了有效的环氧合酶抑制剂减轻角叉菜胶诱导的大鼠爪炎症的能力。这些衍生物由于对环加氧酶的强抑制作用而具有很强的抗炎活性,除了一些例外,包括那些在R1处带有硫代甲基的衍生物。