(5R,7R)-5-methyl-4-(piperazin-1-yl)-6,7-dihydro-5H-cyclopenta[d]pyrimidin-7-ol dihydrochloride 、
(S)-2-((S)-1-(tert-butoxycarbonyl)pyrrolidin-2-yl)-2-(3-fluoro-4-(trifluoromethyl)phenyl)acetic acid 在
O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 、
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以72%的产率得到(S)-tert-butyl 2-((S)-1-(3-fluoro-4-(trifluoromethyl)phenyl)-2-(4-((5R,7R)-7-hydroxy-5-methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-yl)piperazin-1-yl)-2-oxoethyl)pyrrolidine-1-carboxylate