2-Mercaptoimidazoles, a new class of potent CCR2 antagonists
摘要:
We describe the synthesis and SAR of a new class of CCR2 antagonists based on a 2-mercaptoimidazole scaffold. The initial lead 1a was optimized to the 3,4-disubstituted analogues 1p-(S) and 1q-(S), which have IC50 values in the MCP-1 induced Ca-flux below 0.01 muM. (C) 2004 Elsevier Ltd. All rights reserved.
aromatic π–π/C–H···π interactions. In particular, CD measurements of chiral and racemic Ar-BINMOL 2a in solution and the solid state show a strong Cotton effect, which revealed that ampli-fication of chirality was observed because of the formation of a chiral supramolecular oligomer derived from the racemic monomer. To this end, the Ar-BINMOLs were used as supramolecular auxiliaries to mediate the Michael
Provided are processes for preparing Ticagrelor and its intermediates that are useful in the processes. Also provided are salts of Ticagrelor, their processes and solid dispersion of Ticagrelor having Ticagrelor in amorphous form.
2-Mercaptoimidazoles, a new class of potent CCR2 antagonists
作者:Guy Van Lommen、Julien Doyon、Erwin Coesemans、Staf Boeckx、Marina Cools、Mieke Buntinx、Bart Hermans、Jean VanWauwe
DOI:10.1016/j.bmcl.2004.11.064
日期:2005.2
We describe the synthesis and SAR of a new class of CCR2 antagonists based on a 2-mercaptoimidazole scaffold. The initial lead 1a was optimized to the 3,4-disubstituted analogues 1p-(S) and 1q-(S), which have IC50 values in the MCP-1 induced Ca-flux below 0.01 muM. (C) 2004 Elsevier Ltd. All rights reserved.
Iridium Catalysts with f-Amphbinol Ligands: Highly Stereoselective Hydrogenation of a Variety of Ketones
catalytic efficiency in the Ir-catalyzed stereoselective hydrogenation of various ketones to afford corresponding stereodefined alcohols with excellent results (full conversions, cis/trans >99:1, and 83% → 99% ee, TON up to 500 000). Control experiments have shown that −OH and −NH groups played a key role in this stereoselective hydrogenation.