(3S,6S)-6-cyclopropyl-3-isobutylpiperazin-2-one 、
(1R,2R)-trans-2-phenyl-1-cyclopropanecarboxylic acid 、
(3S,6S)-4-cinnamoyl-3,6-diisobutylpiperazin-2-one 以to furnish 235 (69 mg, 80% yield) as a white solid的产率得到(3S,6S)-6-cyclopropyl-3-isobutyl-4-((1R,2R)-2-phenylcyclopropanecarbonyl)-piperazin-2-one