5-(2,4-Difluorophenyl)salicylic acid, diflunisal (25), is the best compound, in terms of both efficacy and safety, from over 500 salicylates investigated in our laboratories. It is a chemically distinct, nonacetylating salicylic acid, more active than aspirin as an analgesic and antiinflammatory agent and superior in duration of action and therapeutic index. Some recent clinical and biochemical observations are briefly discussed.
在这里,我们演示了芳基噻啉鎓盐或吩恶噻鎓盐的钯催化桧山型交叉偶联反应。通过使用稳定且廉价的有机硅烷,以市售Pd( t Bu 3 P) 2为催化剂,高效地实现了芳基化、烯基化和炔基化,从而为制备联芳基、苯乙烯和芳基乙炔提供了可靠的方法。在温和条件下具有广泛的官能团耐受性。鉴于以显着的区域选择性方式从简单芳烃中获得芳基噻啉盐或吩噻噻啉盐,该方案还为复杂生物活性支架的后期修饰提供了一种有吸引力的方法。