(3S,6S)-3,6-diisobutyl-4-(4-phenoxybenzoyl)piperazin-2-one 、
(3S,6S)-3,6-diisobutylpiperazin-2-one 、
3-[4-(trifluoromethyl)phenyl]-2-propynoic acid 以to give the product 122 (51.2 mg, 40.4% yield) as a white solid的产率得到(3S,6S)-3,6-diisobutyl-4-(3-(4-(trifluoromethyl)phenyl)propioloyl)piperazin-2-one