(3S,6S)-3,6-diisobutyl-4-(4-phenoxybenzoyl)piperazin-2-one 、
(3S,6S)-6-phenyl-3-propylpiperazin-2-one 、
(1R,2R)-trans-2-phenyl-1-cyclopropanecarboxylic acid 以to give the product 399 (24.1 mg, 14% yield) as a white solid的产率得到(3S,6S)-6-phenyl-4-((1R,2R)-2-phenylcyclopropanecarbonyl)-3-propylpiperazin-2-one