(3S,6S)-3,6-diisobutylpiperazin-2-one 、 (1R,2R)-2-(2,4-difluorophenyl)cyclopropanecarboxylic acid 、
( 3S,6S)-3,6-diiso-butyl-4-((1R,2R)-2-phenylcyclopropanecarbonyl)piperazin-2-one 以to furnish product 326 (19 mg, 20.6% yield) as a white solid的产率得到(3S,6S)-6-cyclohexyl-4-((1R,2R)-2-(2,4-difluorophenyl)cyclopropanecarbonyl)-3-isobutylpiperazin-2-one