[1]Kuethe,JeffreyT.;Janey,JacobM.;Truppo,Matthew;Arredondo,Juan;Li,Tao;Yong,Kelvin;He,Shuwen[Tetrahedron,2014,vol.70,#30,p.4563-4570]
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2-(3-((2R,6S)-2,6-dimethylmorpholine-4-carbonyl)-5,6-dihydrocyclopentacpyrazol-1(4H)-yl)aceticacid 
 
1-(4-(cyclopentyloxy)piperidin-1-yl)-2-(3-((2S,6R)-2,6-dimethylmorpholine-4-carbonyl)-56-dihydrocyclopentacpyrazol-1(4H)-yl)ethan-1-one 
[1]CurrentPatentAssignee:MERCK&COINC-WO2020/41100,2020,A1Locationinpatent:Page/Pagecolumn80