(3S,6S)-6-cyclohexyl-3-isobutylpiperazin-2-one 、
Cyclopropanecarboxylic acid, 2-[4-(1,1-dimethylethyl)phenyl]-, trans- 、
( 3S,6S)-3,6-diiso-butyl-4-((1R,2R)-2-phenylcyclopropanecarbonyl)piperazin-2-one 以to furnish product 328 (20 mg, 22.6% yield) as a white solid的产率得到(3S,6S)-4-((1R,2R)-2-(4-(tert-butyl)phenyl)cyclopropanecarbonyl)-6-cyclohexyl-3-isobutylpiperazin-2-one