Synthesis of pyrazole derivatives as potential bioisosteres of thromboxane-synthetase inhibitors
作者:Eliezer J. Barreiro、Antonio C. C. Freitas
DOI:10.1002/jhet.5570290220
日期:1992.3
A series of ω-carboalkenyl pyrazole derivatives have been synthesized as potential thromboxane-synthetase inhibitors considering the close bioisosteric relationship between the pyrazole ring and other heteroaromatic carboalkenyl compounds exhibiting inhibitory activity. (E)-7-(1-Phenylpyrazol-4-yl)hept-2-enoic acid (4b) were prepared in 28% overall yield from its minor bis-homologue, (E)-5-(1-phen
考虑到吡唑环与其他表现出抑制活性的杂芳族碳烯基化合物之间的紧密生物等排关系,已经合成了一系列ω-碳烯基吡唑衍生物作为潜在的血栓烷合成酶抑制剂。(E)-7-(1-苯基吡唑-4-基)庚-2-烯酸(4b)由其较小的双同源物(E)-5-(1-苯基吡唑-4 )制备,总产率为28%得自4-甲酰基-1-苯基吡唑(6)的-基)戊-2-烯酸(4a),总产率为17%。筛选化合物4a,4b,7、8和13的体外抑制能力使用Born测试,胶原蛋白诱导的兔血小板凝集。在活性化合物4a中,在1μM的浓度下显示出重要的抑制作用。