Benzoxazolamines and Benzothiazolamines: Potent, Enantioselective Inhibitors of Leukotriene Biosynthesis with a Novel Mechanism of Action
作者:Edward S. Lazer、Clara K. Miao、Hin-Chor Wong、Ronald Sorcek、Denice M. Spero、Alex Gilman、Kollol Pal、Mark Behnke、Anne G. Graham
DOI:10.1021/jm00033a008
日期:1994.4
phenylalanine with a cyclohexyl group greatly enhance potency. Several ester bioisosteres that retain potency and enantiomeric selectivity are described. Lead optimization culminated in (S)-N-[2-cyclohexyl-1-(2-pyridinyl)ethyl]-5-methyl-2-benzoxazolamine+ ++ (43b), IC50 0.001 microM. The compounds described are not inhibitors of 5-lipoxygenase but, rather, act at the level of arachidonic acid release.
描述了一系列抑制白三烯(LT)生物合成的苯并恶唑胺和苯并噻唑胺类似物。最初的铅(S)-N-(苯并噻唑-2-基)苯丙氨酸乙酯(5a)在筛选程序中被发现,该程序可抑制Ca-离子载体-A23187诱导的人多形核白细胞释放LTB4(IC50 0.23 microM )。通过结构修饰,确定了5-位上的疏水取代基以及苯丙氨酸的苯环被环己基取代极大地增强了效能。描述了几种保留效力和对映异构体选择性的酯类生物甾体。铅优化最终达到(S)-N- [2-环己基-1-(2-吡啶基)乙基] -5-甲基-2-苯并恶唑胺+ ++(43b),IC50 0.001 microM。所述化合物不是5-脂氧合酶的抑制剂,而是