(3S,6S)-3,6-diisobutylpiperazin-2-one 、 5-[4-(Trifluoromethoxy)phenyl]isoxazole-3-carboxylic Acid 、
(3S,6S)-4-cinnamoyl-3,6-diisobutylpiperazin-2-one 以to furnish 179 (57 mg, 52% yield) as white solid的产率得到(3S,6S)-3,6-diisobutyl-4-(5-(4-(trifluoromethoxy)phenyl)isoxazole-3-carbonyl)piperazin-2-one