1032758-88-5 
 
1190423-36-9 
 
benzyl3-(2-chloro-6-morpholinopyridin-4-yloxy)azetidine-1-carboxylate 
 
3-(2-(2-(tert-butoxycarbonylamino)pyrimidin-5-yl)-6-morpholinopyridin-4-yloxy)azetidine-1-carboxylate 
 
benzyl3-((2-(2-(di-BOC-amino)pyrimidin-5-yl)-6-morpholinopyridin-4-yl)oxy)azetidine-1-carboxylate 
[1]Patent:WO2019/199864,2019,A1.Locationinpatent:Paragraph0324;0328;0329