(3S,6S)-6-cyclohexyl-3-isobutylpiperazin-2-one 、
(1R,2R)-2-(4-fluorophenyl)cyclopropanecarboxylic acid 、
(3S,6S)-4-cinnamoyl-3,6-diisobutylpiperazin-2-one 以to furnish product 241 (55 mg, 68.2% yield) as a white solid的产率得到(3S,6S)-6-cyclohexyl-4-[(1R,2R)-2-(4-fluoro-phenyl)-cyclopropanecarbonyl]-3-isobutyl-piperazin-2-one