Preparation and Optimization of a Series of 3-Carboxamido-5-phenacylaminopyrazole Bradykinin B1 Receptor Antagonists
作者:Darren Dressen、Albert W. Garofalo、Jon Hawkinson、Dennis Hom、Jacek Jagodzinski、Jennifer L. Marugg、Martin L. Neitzel、Michael A. Pleiss、Balazs Szoke、Jay S. Tung、David W. G. Wone、Jing Wu、Heather Zhang
DOI:10.1021/jm051292n
日期:2007.10.1
The B1 receptor is an attractive target for the treatment of pain and inflammation. A series of 3-carboxamido5-phenacylamino pyrazole B1 receptor antagonists are described that exhibit good potency against B1 and high selectivity over B2. Initially, N-unsubstituted pyrazoles were studied, but these compounds suffered from extensive glucuronidation in primates. This difficulty could be surmounted by the use of N-substituted pyrazoles. Optimization efforts culminated in compound 41, which has high receptor potency and metabolic stability.
US7300949B2
申请人:——
公开号:US7300949B2
公开(公告)日:2007-11-27
One-pot, three-component synthesis of novel coumarinyl-pyrazolo[3,4-b]pyridine-3-carboxylate derivatives using [AcMIm]FeCl4 as recyclable catalyst
Multicomponentsynthesis of novel coumarin-based fused pyrazolo[3,4-b]pyridine-3-carboxylate derivatives was developed using acidic ionic liquid, 1-acyl-3-methylimidazolium tetrachloroferrate ([AcMIm]FeCl4), under mild and environmentally benign reaction conditions. [AcMIm]FeCl4 served as a catalyst as well as the reactionmedium and was reused for at least four times without significant loss of yield
使用酸性离子液体 1-酰基-3-甲基咪唑鎓四氯铁酸盐 ([AcMIm]FeCl 4 ) 在温和和环境友好的条件下开发了新型香豆素基稠合吡唑并[3,4- b ]吡啶-3-羧酸盐衍生物的多组分合成反应条件。[AcMIm]FeCl 4作为催化剂和反应介质,至少重复使用四次而不会显着降低产率。随后的化合物(4a-4p)通过 FT-IR、1 H NMR 和13鉴定C NMR和质谱研究。所开发的方法具有几个优点,例如简单的方案、出色的产品产率 (90-92%)、更短的反应时间 (2 h)、催化剂的可回收性、环保的反应条件和更好的绿色化学指标值,如低 E 因子 (0.32)、高反应质量效率 (75.28%)、低工艺质量效率 (1.32) 和高原子经济性 (81.82)。