Synthesis and biological evaluation of N-difluoromethyl-1,2-dihydropyrid-2-one acetic acid regioisomers: Dual Inhibitors of cyclooxygenases and 5-lipoxygenase
作者:Gang Yu、P.N. Praveen Rao、Morshed A. Chowdhury、Khaled R.A. Abdellatif、Ying Dong、Dipankar Das、Carlos A. Velázquez、Mavanur R. Suresh、Edward E. Knaus
DOI:10.1016/j.bmcl.2010.02.040
日期:2010.4
2-dihydropyrid-2-one ring system to an acetic acid, or propionic acid, moiety confers potent 5-LOX inhibitory activity, that is, absent in traditional arylacetic acid NSAIDs. 2-(1-Difluoromethyl-2-oxo-1,2-dihydropyridin-5-yl)acetic acid (7c) exhibited the best combination of dual COX-2 and 5-LOX inhibitory activities. Molecular modeling (docking) studies showed that the highly electronegative CHF2 substituent
一组新的乙酸(7a – c,R 1 = H)和丙酸(7d – f,R 1 = Me),区域异构体,其中连接了N-二氟甲基-1,2-二氢吡啶-2-酮基通过其C-3,C-4和C-5位合成。相对于COX-1同工酶,这组化合物对环氧合酶-2(COX-2)表现出更强的抑制作用,因此具有更高的选择性。所述的附件Ñ二氟甲基-1,2-二氢吡啶-2-酮环系统的乙酸或丙酸,部分赋予有效的5-LOX的抑制活性,即,在传统的芳基乙酸的NSAIDs不存在。2-(1-二氟甲基-2-氧代-1,2-二氢吡啶基-5-基)乙酸(7c)展现出双重COX-2和5-LOX抑制活性的最佳组合。分子建模(对接)研究表明,在7c中存在的高负电CHF 2取代基对COX-2同工酶具有适度的选择性,其取向类似于与磺酰胺(SO)类似,在COX-2中存在的第二个口袋(Val523)内。2 NH 2)celecoxib中存在COX-2药效团,并