Synthesis of halogenated trimetoquinol derivatives and evaluation of their .beta.-agonist and thromboxane A2 (TXA2) antagonist activities
作者:K. M. Markovich、V. Tantishaiyakul、A. Hamada、D. D. Miller、K. J. Romstedt、G. Shams、Y. Shin、P. F. Fraundorfer、K. Doyle、D. R. Feller
DOI:10.1021/jm00081a007
日期:1992.2
activities while imparting weak antagonist activity on beta 1 receptors. On TXA2 systems, both 4 and 7 possessed significantly decreased inhibitory activity compared to TMQ. The synthetic approaches to the synthesis of 8-(trifluoromethyl)-TMQ (8) are also described. The enantiomers of the 8-fluoro derivative (3) of TMQ were separated on a preparative Chiralcel OD column and evaluated on beta-adrenergic systems
合成了偏苯二酚(TMQ,1)的5,8-二氟(4),5-碘(5),8-碘(6)和5-三氟甲基(7)衍生物并评估了其刺激β的能力1(豚鼠心房)和beta 2(豚鼠气管)肾上腺素受体以及它们对U46619 [血栓烷A2(TXA2)模拟]介导的大鼠胸主动脉收缩和人血小板聚集的抑制活性。在两个β-肾上腺素系统上,5和6的活性都大大低于TMQ,并且刺激效力的等级顺序为1,大于或等于5大于6。同样,在任一位置上的碘取代也导致TXA2降低。等级为1的拮抗剂活性比6大得多,比5大得多。5-iodo-TMQ(5)对人主动脉中的大鼠主动脉中的U46619反应的阻断具有明显的选择性。在beta系统上,与TMQ相比,4的效能降低,并且类似地具有非选择性。在TMQ的5位引入三氟甲基完全消除了β1和β2肾上腺素能激动剂的活性,同时赋予了β1受体较弱的拮抗剂活性。在TXA2系统上,与TMQ相比,4和7均具有明显降低的抑制