New and practical synthetic route of momelotinib, a JAK inhibitor, is described on a decagram scale. A convergent synthetic process is adopted to prepare the methyl 4‐(2‐((4‐morpholinophenyl)amino)pyrimidin‐4‐yl) benzoate intermediate, by cyclization of 1‐(4‐morpholinophenyl)guanidine and methyl 4‐(3‐(dimethylamino)acryloyl)benzoate in high yield and mild conditions. Momelotinib is obtained in 43.2%
A simple and practical method to access N-substituted 2-pyridones via a formal [3+3] annulation of enaminones with acrylates based on RhIII-catalyzed C–H functionalization was developed. Control and deuterated experiments led to a plausible mechanism involving C–H bond cross-coupling and aminolysis cyclization. This strategy provides a short synthesis of structural motifs of N-substituted 2-pyridones
Herein, an efficient, metal-free process for the α-C–H thiocyanation of enaminones was developed using PhI(OAc)2 as an oxidant at room temperature in an aqueous medium. Various SCN-containing enaminones and chromones with broad functional groups were synthesized in moderate to good yields in the presence of KSCN. In addition, 3-selenocyanochromone was synthesized using this fast, green, metal-free
COMPOUNDS AND COMPOSITIONS AS INHIBITORS OF CANNABINOID RECEPTOR 1 ACTIVITY
申请人:Liu Hong
公开号:US20090247517A1
公开(公告)日:2009-10-01
The invention provides compounds, pharmaceutical compositions comprising such compounds and methods of using such compounds to treat or prevent diseases or disorders associated with the activity of Cannabinoid Receptor 1 (CB1).