(3S,6S)-3-(2,2-dimethyl-propyl)-6-phenyl-piperazin-2-one 、
5-(4-氟苯基)异噁唑-3-羧酸 、
( 3S,6S)-3,6-diiso-butyl-4-((1R,2R)-2-phenylcyclopropanecarbonyl)piperazin-2-one 以to furnish compound 342 (68 mg, 78% yield) as a white solid的产率得到(3S,6S)-4-(5-(4-fluorophenyl)isoxazole-3-carbonyl)-3-neopentyl-6-phenylpiperazin-2-one